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December 4th, 2024

MIL vs. MOA — Scope Angular Click Values Explained

Mil MOA reticle ranging PRS tactical minute angle precision rifle series
Visit PrecisionRifleBlog.com for a discussion of MIL vs. MOA.

Many guys getting started in long range shooting are confused about what kind of scope they should buy — specifically whether it should have MIL-based clicks or MOA-based clicks. Before you can make that decision, you need to understand the terminology. This article, with a video by Bryan Litz, explains MILS and MOA so you can choose the right type of scope for your intended application.

This March-FX 5-40x56mm Tactical FFP scope features 0.05 MIL Clicks.
Mil MOA reticle ranging PRS tactical minute angle precision rifle series

You probably know that MOA stands for “Minute of Angle” (or more precisely “minute of arc”), but could you define the terms “Milrad” or “MIL”? In a helpful video, Bryan Litz of Applied Ballitics explains MOA and MILs (short for “milliradians”). Bryan defines those terms and explains how they are used. One MOA is an angular measurement (1/60th of one degree) that subtends 1.047″ at 100 yards. One MIL (i.e. one milliradian) subtends 1/10th meter at 100 meters; that means that 0.1 Mil is one centimeter (1 cm) at 100 meters. Is one angular measurement system better than another? Not necessarily… Bryan explains that Mildot scopes may be handy for ranging, but scopes with MOA-based clicks work just fine for precision work at known distances. Also because one MOA is almost exactly one inch at 100 yards, the MOA system is convenient for expressing a rifle’s accuracy. By common parlance, a “half-MOA” rifle can shoot groups that are 1/2-inch (or smaller) at 100 yards.

What is a “Minute” of Angle?
When talking about angular degrees, a “minute” is simply 1/60th. So a “Minute of Angle” is simply 1/60th of one degree of a central angle, measured either up and down (for elevation) or side to side (for windage). At 100 yards, 1 MOA equals 1.047″ on the target. This is often rounded to one inch for simplicity. Say, for example, you click up 1 MOA (four clicks on a 1/4-MOA scope). That is roughly 1 inch at 100 yards, or roughly 4 inches at 400 yards, since the target area measured by an MOA subtension increases with the distance.

one MOA minute of angle diagram

MIL vs. MOA for Target Ranging
MIL or MOA — which angular measuring system is better for target ranging (and hold-offs)? In a recent article on his PrecisionRifleBlog.com website, Cal Zant tackles that question. Analyzing the pros and cons of each, Zant concludes that both systems work well, provided you have compatible click values on your scope. Zant does note that a 1/4 MOA division is “slightly more precise” than 1/10th mil, but that’s really not a big deal: “Technically, 1/4 MOA clicks provide a little finer adjustments than 1/10 MIL. This difference is very slight… it only equates to 0.1″ difference in adjustments at 100 yards or 1″ at 1,000 yards[.]” Zant adds that, in practical terms, both 1/4-MOA clicks and 1/10th-MIL clicks work well in the field: “Most shooters agree that 1/4 MOA or 1/10 MIL are both right around that sweet spot.”

READ MIL vs. MOA Cal Zant Article.

Permalink - Articles, Optics Post comment »
December 4th, 2024

Great Rimfire Revolver — Colt King Cobra Target 22 LR

new colt king cobra target 22 LR .22 LR revolver rimfire wheelgun

Two years ago, Colt Mfg. Co. (“Colt”) introduced an impressive new rimfire revolver — the King Cobra Target 22 LR. Colt states: “From competition to plinking and small game hunting, this baby Cobra does it all and packs 10-rounds of .22 LR in its cylinder”. The King Cobra Target 22 LR is available with 4.25-inch and 6-inch barrel lengths, both with 1:16″ RH rifling twist. The 4.25″ and 6″ models each have a $999.00 MSRP.

new colt king cobra target 22 LR .22 LR revolver rimfire wheelgun

The King Cobra Target 22 LR features USA-forged stainless steel construction. Designed and crafted for outstanding accuracy, new King Cobra Target 22 LR features a one-piece barrel/shroud with fiber optic front sight. The cylinder holds ten (10) rounds. The frame is fitted with an adjustable target rear sight and Hogue overmolded rubber grips.


This TFB Showtime episode examines the new .22 LR rimfire Colt King Cobra Target. The King Cobra Target 22 LR features a 10-shot cylinder, and the same adjustable target sights as the .357 Magnum version.

Last May, Justin Baldini, Colt’s VP of Product Strategy stated: “Shooting .22 LR is such an important part of shooting sports. It’s where we come to learn as a beginner; and where we return as seasoned shooters to cost-effectively enjoy more time at the range. We’re confident that new and old Colt fans will love what we’ve done with the new King Cobra 22 LR.”

All-American built, the King Cobra Target 22 LR should deliver exceptional accuracy and good reliability. Watch the video to see this rimfire revolver in action.


new colt king cobra target 22 LR .22 LR revolver rimfire wheelgun

Commentary: We applaud Colt for introducing this new .22 LR wheelgun. Rimfire revolvers are great. This Editor owns a Smith & Wesson Model 617 ten-shot rimfire revolver that has easily fired more rounds than all his other handguns combined. A .22 LR revolver is great for training and fun for plinking. Like the Model 617, this Colt .22 LR wheelgun offers minimal recoil, great reliability, a nice sight radius, and affordable shooting. In addition, if you shoot single-action slow-fire, the trigger pull is light and crisp — better than the vast majority of semi-auto pistols. We think this new “Baby Snake” will be a great addition to any shooter’s collection.

Permalink - Videos, Gear Review, Handguns Post comment »
December 3rd, 2024

Advanced New Quantum™ Ballistics App from Applied Ballistics

applied ballistics quantum app solver profile shooting bryan litz android ios apple

Applied Ballistics has released powerful new ballistics software, the Applied Ballistics Quantum™ App. This state-of-the-art mobile App provides a complete ballistics solver plus profile management tool for long-range shooting. Featuring an all-new user interface, AB Quantum™ includes a host of new tools and features for competitive shooters and hunters.

“Ballistics can be complicated, and it is our job to simplify what’s important so that shooters can hit targets”, said Applied Ballistics Founder/Chief Ballistician Bryan Litz. “The AB Quantum platform meets this goal and more. By integrating the ballistic solver with other support tools, shooters will have a complete management system to … put rounds on target faster and easier than ever before.”

applied ballistics quantum app solver profile shooting bryan litz android ios apple

Applied Ballistics Chief Technology Officer Nick Vitalbo said that the goal was “to create the most intuitive, feature-rich ballistics application on the market, seamlessly integrating with the entire Applied Ballistics ecosystem of products. AB Quantum™ will be our flagship platform, driving the future of AB-integrated devices [and transforming] the way [customers] use their existing AB-enabled products.”

Quantum™ Ballistics App — New Features Overview

AB Quantum™ creates a new paradigm for ballistic solvers and integration with Bluetooth®-enabled devices. With a host of new features, the platform is designed to save time and add performance for users of all skill levels. The all-new user interface is designed with single-handed use in mind, putting all major features just a swipe or tap away from any screen, which allows users to rapidly obtain solutions in the field or at a match. The simplicity and versatility of the app interface creates an intuitive experience for both new and experienced users.

Two new features — AB Quantum Connect™ and AB Quantum Sync™ — enable users to quickly connect to other AB-enabled devices and sync gun profiles between them in seconds, as well as back those profiles up to an encrypted server for peace of mind and easy restoration. The new platform automatically saves changes made to rifle profiles and updates connected devices. AB Quantum™ also includes customizable Range and Multi-Target tables. After creating a range or target card, it can easily be shared via email.

AB Quantum™ platform has impressive, innovative features:

● AB Quantum™ User Interface — Take control of ballistic data and find solutions with ease using the new layout designed with one-handed operation in mind.
● New Bluetooth® Device Manager — Find and connect AB Bluetooth® devices quickly and send data
between devices using AB Quantum Connect™.
● AB Quantum Sync™ — User gun profiles are automatically uploaded to an encrypted server to allow easy access for other devices and backup, providing peace of mind and security.
● Customizable Range Card and Target Card Modes — The new expandable and customizable range and
target card modes allow users to select what data to see for each Range or Target. Use the share function to send range and data cards in just seconds.
● New Reticle Library — The AB Reticle library is hosted online and updates in AB Quantum™ automatically, providing users with up-to-date solution drawing for their favorite rifle scopes.
● Improved Truing Interface — Easy to access ballistic truing features without leaving solution screens.
● Chronograph Integration — Connect Bluetooth®-enabled chronographs – such as the Optex Systems
SpeedTracker™ – directly to the App and save the velocity data to rifle profiles.

applied ballistics quantum app solver profile shooting bryan litz android ios apple

» CLICK HERE for full 50-min Quantum App Walk-Through Video

The acclaimed Applied Ballistics Bullet Library is a good example of simplification for shooters: it includes thousands of projectile models that have been built using Doppler Radar to create a Custom Drag Model (CDM) for each bullet. This library is a core feature of the AB Quantum™ App, giving users the fastest way to create accurate and precise solutions for any environment.

Consumers can now download the AB Quantum App from iOS or Android app stores. There is a free basic version, as well as an Elite subscription, which unlocks many more features for just $2.99/month or $19.99/year (see chart below). For more information visit AppliedBallisticsllc.com/ab-quantum/.

applied ballistics quantum app solver profile shooting bryan litz android ios apple

About Applied Ballistics
Applied Ballistics provides ballistics data and software solutions for shooters, hunters and industry partners. Offering books, online training, and advanced ballistics software, Applied Ballistics is dedicated to delivering accurate, unbiased ballistics information and solutions.

Permalink - Videos, Bullets, Brass, Ammo, News, Tech Tip 1 Comment »
December 3rd, 2024

Handgun Skill Set — Sight Alignment, Trigger Control, and Grip

pistol fundamentals NRA marksmanship sight alignment
Photo courtesy St. Bernard Indoor Shooting Center.

Do you enjoy shooting pistols for sport, or perhaps you carry a handgun for self-defense? If you’re like most of us, you might benefit from a “refresher course” on the fundamentals of handgun shooting. The NRA has created a useful Infographic that covers important basics of handgun marksmanship — key things such as Sight Alignment, Trigger Control, and Handgun Hold.

Here are the first two (2) lessons. Click the link below to see all SIX (6) training topics: Sight Alignment, Sight Focus, Trigger Control, Breath Control, Hold Control, and Follow-Through.

CLICK HERE for ALL SIX PISTOL LESSONS

pistol fundamentals NRA marksmanship sight alignment

VIEW ALL Six Handgun Fundamentals

Video Shows Sight Alignment, Grip, Stance, Trigger Control and More
In this USAMU video, SGT Shane Coley talks about the basics of sight alignment and trigger control. But then SGT Coley talks about other important control factors such as grip, arm position, and body stance. For rapid-fire shooting, you need to have a good arm and body positioning to control recoil and get back on target quickly. This video is a valuable complement to the NRA Infographic because it demonstrates all the important pistol fundamentals during live fire, at the range.

Permalink - Articles, - Videos, Handguns, Shooting Skills Post comment »
December 2nd, 2024

Special Cyber Monday and Cyber Week Promotions

cyber monday week sale bargain

Along with the 20 Monday Deals featured here, some major vendors are offering site-wide specials today, Cyber Monday, December 2, 2024. You can get FREE Shipping or FREE Hazmat. In addition, Natchez is running major discounts for the next full week through December 8, 2024. Check out these specials:

sportsman's guide
sportsman's guide

Natchez is running a major Cyber Week Sale all this week from 12/2/24 to 12/8/2024. There are discounts up to 70% Off for outdoor gear and shooting accessories. Visit NatchezSS.com for Cyber Week Savings on a vast selection of outdoor gear and shooing products — including ammo — with savings up to 70% off! NOTE: For today only, Monday December 2, 2024 you can also get FREE Shipping with orders of $99.99 or more. Use Code FS241129 for FREE Shipping.

sportsman's guide

At Sportsman’s Guide, use coupon code SG4124 at checkout to receive 15% off your entire purchase> This works for nearly everything on the site, but with these exclusions: Buyer’s Club Membership fees, Ammo, Firearms, Trolling Motors, Electronics, Night Vision Optics, Generators, Doorbusters, and Bullseye deal items. 50 maximum coupon value. The coupon cannot be combined with any other coupons and cannot be redeemed for cash. Offer expires December 3, 2024.

powder valley cyber monday free hazmat

Get FREE HAZMAT today at Powder Valley Outdoors with an order of $99 or more. Valid Monday, December 2nd only! NOTE: This promotion excludes dealers and cannot be combined with any other offer. Order value is based on $99 of hazardous materials from the following categories: Black Powder, Powder Substitutes, Primers, and Percussion Caps.

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EuroOptic is running many CyberWeek and December promotions right now. Some of the deals conclude today 12/2/2024, but other promotions run through 12/8 or even through the end of the month. If you are shopping for a premium optic or a hunting rifle, head over to EuroOptic.com today.

precision reloading cyber monday free shipping

Today, Monday December 2, 2024, Precision Reloading is offering $5 Flat-Rate Shipping on all orders of $99 or more. Use Discount Code SHIP5 at checkout to take advantage of this one-day discount.

Permalink Bullets, Brass, Ammo, Hot Deals, News 1 Comment »
December 2nd, 2024

RCBS “Brass Boss” Case Prep Center with Six Stations

RCBS cartridge brass chamfering deburring power tool head station Brass Boss six

RCBS has a good successor to the venerable RCBS Trim Mate. The RCBS Brass Boss features six rotating stations that handle all your brass neck-brushing, chamfering, deburring, and pocket uniforming chores. The RCBS Brass Boss includes tools for all six stations: inside VLD chamfering tool, outside deburring tool, primer pocket cleaners (small/large), military crimp removers (small/large), primer pocket uniformers (small/large), case neck brushes (four diameters), and a tub of dry case neck lubricant. MSRP for the Brass Boss, RCBS Item 90390, is $219.99. The best price we found is $169.99 at Natchez — a very good deal.

New RCBS cartridge brass chamfering deburring power tool head station Brass Boss sixThis machine has two different rotation speeds for the toolheads. Four stations run at 350 rpm, while the two other stations run 57% faster, at 550 rpm. That give you a choice of spin speeds. You can work fast for tougher chores like military crimp removal, and slow down for inside-neck chamfering, which should be done carefully.

Larger and taller than the older RCBS Trim Mate, the Brass Boss has one more station (six vs. five), plus a more powerful motor. This should make the Brass Boss more competitive with the popular Lyman Case Prep Express, $168.59 on Amazon.

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December 1st, 2024

BargainFinder 480: AccurateShooter’s Cyber Monday Deals

AccurateShooter Deals of the Week Weekly Bargain Finder Sale Discount Savings

At the request of our readers, we provide select “Deals of the Week”. Every Sunday afternoon or Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.

black friday accurateshooter cyber monday sale
NOTE: These deals may disappear at 11:59 PM EST on Monday 12/2/2024.

CYBER MONDAY Specials — 20 Hot Bargains

For our previous Black Friday feature stories last week we listed multiple websites that offered a variety of discounts. For this 2024 Cyber Monday + Deals of the Week, we feature 20 select items. Click on each to get the current deal on the seller’s site, and then you can shop other Cyber Monday bargains at that vendor.

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NOTE: All listed products are for sale to persons 18 years of age or older. No products are intended for use by minors.

Permalink Handguns, Hot Deals, Optics Post comment »
December 1st, 2024

Sunday GunDay: Savage A22 Takedown .22 LR Rimfire Rifle

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

Savage offers an innovative, versatile version of its popular A22 rimfire rifle. The Savage A22 Takedown separates quickly and easily into two units, with a simple quarter-turn (90-degree) rotation of the fore-end. This allows the A22 Takedown to easily transport in a pack when camping or hunting. Or stow the gun conveniently in your vehicle. Separating this A22 Takedown into two parts is as simple as a twist.

The Savage A22 Takedown ($479.99 MSRP, $370 average sales price) has some other cool storage features. The cheek-piece lifts up to provide storage for three, (3) 10-round rotary-style magazines. In addition, the A22 Takedown has a dry storage compartment in the pistol grip that can hold patches or other small accessories, such as earplugs.

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gundaySavage A22 Takedown Key Features:

Semi-automatic .22 LR carbon steel action
Easy tool-less takedown configuration
User-adjustable AccuTrigger (3-5 lbs.)
18″ carbon steel barrel, 1:16″-twist
Magazine compartment in cheek riser
Storage compartment in pistol grip
10-round rotary flush magazines
Picatinny rail with sight channel
Low-profile sights
Tang safety
Weight 6.3 lbs.

What Are the Advantages of a Takedown Rifle?
The first big advantage of a takedown rifle is that it can be stored in a smaller space and you don’t need a long case to carry in the field. Fully assembled, the Savage A22 Takedown is 36.875″ long. As separated into two sections, each section is about 18″ long, so each segment can fit inside a small day-pack. When transported in a vehicle, the two segments may fit in an on-board storage area, or even in the spare tire compartment (with appropriate padding).

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

The Savage A22 Takedown rifle can also be transported in an ultra-short 24″ Discrete Carry Case that doesn’t look like a typical rifle case.

Assembly and Disassembly of Savage A22 Takedown

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

The Savage A22 Takedown can be separated into two sections in a matter of seconds. First make sure the gun is unloaded, the magazine is removed, and the bolt is pulled back and locked. Make sure the muzzle is pointed away from you, and the safety is activated. Double-check to make sure there is no round in the chamber! Then holding the gun horizontally, grab the fore-end and rotate one-quarter turn clockwise. Then ease the barrel/fore-arm section forward gently. This will expose the front of the action and reveal the .22 LR chamber in the fore-end section. You can see how this works in the video below.

To re-assemble the A22 Takedown, bring the fore-end towards the action with the rear sight at the 3 0’clock position (right of center looking towards muzzle). Push the fore-end back gently until is seats properly. Then rotate the fore-end 90-degrees counter-clockwise. Again, watch the above video to see this re-assembly procedure, starting at 00:27 time-mark.

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday
NOTE: Savage provided these studio photos, but the magazine should be REMOVED before disassembly.

On-Board Storage Under Cheek-Piece and in Grip Section

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

The Savage A22 Takedown has two very innovative and unique storage systems built into the synthetic stock. First the cheekpiece is hinged at the front, and lifts up to reveal a special compartment that holds three (3) of the A22’s rotary magazines. This is a very clever design — unique among rimfire rifles we believe. In addition, there is storage area INSIDE the pistol grip. This is accessed by removing a detachable plastic cover that snaps into the bottom of the grip section.

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

Performance in the Field

With an 18″ barrel, expect your .22 LR rimfire ammo to deliver good velocities in the A22 Takedown. After some adjustment of the Accutrigger, other A22s we have shot have performed well and been reliable so long as you make sure to fully seat the rotary magazines. This would be a good starter rifle, and has unmatched versatility for easy packing. The weight, before optics, is just 6.3 pounds. One nice design feature is a sight channel in the Picatinny rail. The adjustable rear sight is attached to the barrel immediately forward of the action.

Savage A22 take-down takedown .22 LR rimfire rifle hunting 22LR new sunday gunday

Permalink Gear Review, Gunsmithing, Hunting/Varminting Post comment »
December 1st, 2024

When Scopes Go Bad — How to Diagnose Rifle Optics Issues

Riflescope Repairs

Riflescopes are mechanical contraptions. One of the sad realities about precision shooting is that, sooner or later, you will experience a scope failure. If you’re lucky it won’t happen in the middle of a National-level competition. And hopefully the failure will be dramatic and unmistakable so you won’t spend months trying to isolate the issue. Unfortunately, scope problems can be erratic or hard to diagnose. You may find yourself with unexplained flyers or a slight degradation of accuracy and you won’t know how to diagnose the problem. And when a 1/8th-MOA-click scope starts failing, it may be hard to recognize the fault immediately, because the POI change may be slight.

How to Diagnose Scope Problems

When you see your groups open up, there’s a very good chance this is due to poor wind-reading, or other “driver error”. But my experience showed me that sometimes scopes do go bad. When your accuracy degrades without any other reasonable explanation, the cause of the problem may well be your optics. Here are some of the “symptoms” of scope troubles:

1. Large shot-to-shot variance in Point of Impact with known accurate loads.
2. Uneven tracking (either vertical or horizontal).
3. Change of Point of Impact does not correspond to click inputs.
4. Inability to zero in reasonable number of shots.
5. Unexpected changes in elevation click values (compared to previous known distance come-ups).
6. Visible shift in reticle from center of view.
7. Changed “feel” or resistance when clicking; or uneven click-to-click “feel”.
8. Inability to set parallax to achieve sharpness.
9. Turrets or other controls feel wobbly or loose.
10. Internal scope components rattle when gun is moved.

Scope Failure mechanical Point of Impact

Even expensive scopes can fail, or start to perform erratically — and that can happen without warning, or for no apparent reason. Here are some signs that you may be having scope issues.

1. Click count has changed significantly from established zero at known range.
2. Noticeably different click “feel” as you rotate turrets, or turrets feel wobbly.
3. Inability to set Adjustable Objective or side focus to get sharp target image.
4. Shot Point of Impact is completely different than click value after elevation/windage change. For example, when you dial 2 MOA “up” but you observe a 6 MOA rise in POI.

When An Expensive Scope Goes Bad — Crazy Vertical Case Study

A few seasons back, this editor had a major-brand 8-25x50mm scope go bad. How did I know I had a problem? Well the first sign was a wild “drop-down” flyer at a 600-yard match. After shooting a two-target relay, I took a look at my targets. My first 5-shot group had five shots, fairly well centered, in about 2.2″. Pretty good. Everything was operating fine. Then I looked at the second target. My eye was drawn to four shots, all centered in the 10 Ring, measuring about 2.4″. But then I saw the fifth shot. It was a good 18″ low, straight down from the X. And I really mean straight down — if you drew a plumb line down from the center of the X, it would pass almost through the fifth shot.

Is My Scope Actually Malfunctioning or Is This Driver Error?
That was disconcerting, but since I had never had any trouble with this scope before, I assumed it was a load problem (too little powder?), or simple driver error (maybe I flinched or yanked the trigger?). Accordingly, I didn’t do anything about the scope, figuring the problem was me or the load.

Problems Reappear — Huge POI Swings Affirm This Scope is Toast
But, at the next range session, things went downhill fast. In three shots, I did manage to get on steel at 600, with my normal come-up for that distance. Everything seemed fine. So then I switched to paper. We had a buddy in the pits with a walkie-talkie and he radioed that he couldn’t see any bullet holes in the paper after five shots. My spotter said he thought the bullets were impacting in the dirt, just below the paper. OK, I thought, we’ll add 3 MOA up (12 clicks), and that should raise POI 18″ and I should be on paper, near center. That didn’t work — now the bullets were impacting in the berm ABOVE the target frame. The POI had changed over 48″ (8 MOA). (And no I didn’t click too far — I clicked slowly, counting each click out loud as I adjusted the elevation.) OK, to compensate now I took off 8 clicks which should be 2 MOA or 12″. No joy. The POI dropped about 24″ (4 MOA) and the POI also moved moved 18″ right, to the edge of the target.

Riflescope RepairsFor the next 20 shots, we kept “chasing center” trying to get the gun zeroed at 600 yards. We never did. After burning a lot of ammo, we gave up. Before stowing the gun for the trip home, I dialed back to my 100-yard zero, which is my normal practice (it’s 47 clicks down from 600-yard zero). I immediately noticed that the “feel” of the elevation knob didn’t seem right. Even though I was pretty much in the center of my elevation (I have a +20 MOA scope mount), the clicks felt really tight — as they do when you’re at the very limit of travel. There was a lot of resistance in the clicks and they didn’t seem to move the right amount.

And it seemed that I’d have four or five clicks that were “bunched up” with a lot of resistance, and then the next click would have almost no resistance and seem to jump. It’s hard to describe, but it was like winding a spring that erratically moved from tight to very loose.

At this point I announced to my shooting buddies: “I think the scope has taken a dump.” I let one buddy work the elevation knob a bit. “That feels weird,” he said: “the clicks aren’t consistent… first it doesn’t want to move, then the clicks jump too easily.”

Convinced that I had a real problem, the scope was packed up and shipped to the manufacturer. So, was I hallucinating? Was my problem really just driver error? I’ve heard plenty of stories about guys who sent scopes in for repair, only to receive their optics back with a terse note saying: “Scope passed inspection and function test 100%. No repairs needed”. So, was my scope really FUBAR? You bet it was. When the scope came back from the factory, the Repair Record stated that nearly all the internal mechanicals had been replaced or fixed:

“Replaced Adjustment Elevation; Replaced Adjustment Windage; Reworked Erector System; Reworked Selector; Reworked Parallax Control.”

Source of Problem Unknown, but I Have a Theory
Although my scope came with a slightly canted reticle from the factory, it had otherwise functioned without a hitch for many years. I was able to go back and forth between 100-yard zero and 600-yard zero with perfect repeatability for over five years. I had confidence in that scope. Why did it fail when it did? My theory is side-loading on the turrets. I used to carry the gun in a thick soft case. I recently switched to an aluminum-sided hard case that has pretty dense egg-crate foam inside. I noticed it took some effort to close the case, though it was more than big enough, width-wise, to hold the gun. My thinking is that the foam wasn’t compressing enough, resulting in a side-load on the windage turret when the case was clamped shut. This is just my best guess; it may not be the real source of the problem. Remember, as I explained in the beginning of this story, sometimes scopes — just like any mechanical system — simply stop working for no apparent reason.

Permalink - Articles, Optics, Tech Tip 1 Comment »
November 30th, 2024

Saturday Movies — Eight Great Videos from Keith Glasscock

Winning in Wind Keith Glasscock video showcase reloading barrel ES SD Accuracy

Keith Glasscock is one of America’s greatest F-Class shooters, as well as a highly respected wind coach. A High Master, Keith finished second overall at the 2021 NRA F-Class Long Range Championship in F-Open division. He also finished second at the 2020 F-Open Nationals, and second at the 2019 F-Open Nationals. His consistency is unrivaled, which means he definitely knows the secrets of competition shooting and loading ultra-accurate ammo. Recently Keith has started PRS/NRL competition, bringing his shooting skills to those popular tactical disciplines.

Winning in Wind Keith Glasscock video showcase reloading barrel ES SD AccuracyKeith has a great YouTube Channel with new content every week. On Keith’s Winning in the Wind channel, Keith offers 235+ informative videos on a wide range of topics including wind reading, reloading, component selection, load development, and training.

For today’s Saturday Video Showcase, we offer eight of our favorite Keith Glasscock videos. These cover many key topics — ballistics, barrel care, gunsmithing, bullet sorting, reloading, maintenance and more. Each video has important points that can benefit any competitive rifle shooter, whether you shoot in local 100-yard fun matches or compete at the National Level in F-Class, LR Benchrest, Palma, High Power, or PRS/NRL.

For most disciplines, if you want to achieve maximum accuracy and consistency, you should have your action bedded. This provides an optimal “seating” for the action which quells shot-to-shot motion and helps reduce vibration. Gunsmiths say a good bedding job can produce immediate benefits. In this video Keith Glasscock explains how to check your stock bedding and discusses the realistic benefits you can expect in group size and consistency over long strings.

Keith Glasscock is one of the very few PRS/NRL competitors who has shot F-Class at the very highest level, finishing second three times in F-Class National Championships. PRS/NRL and F-Class are very different disciplines with different challenges. F-Class is shot prone with time between shots and target distances from 600 to 1000 yards. In PRS/NRL competition, you are shooting from multiple positions, at many distances from 100 yards on out, with fast follow-up shoots. For F-Open, you want an extremely accurate load that can deliver sub-quarter MOA groups at 200 yards. For PRS/NRL you don’t necessarily need that level of accuracy (though it helps). But you also need a load that is very consistent, has relatively low recoil, but can also provide sufficient impact energy to clearly show a hit on distant steel. In this video, Keith Glasscock explains his reloading objectives for the two disciplines.

Hard carbon is the bane of rifle shooters. Hard carbon build-up in the barrel can adversely affect accuracy, and in extreme cases, can lead to increased pressure. If possible, you should clean your barrel(s) soon after a match (or shooting session) before the carbon fully hardens. We’ve used Wipe-Out Foam right after a match (with an hour soak time) and that dramatically reduced the amount of brushing required. In this video Keith Glasscock explains the negatives of hard carbon in your barrel, and he discusses how to diagnose the problem and how to remove the carbon build-up efficiently.

Benchrest and F-Class shooters don’t worry about magazines, because their rifles typically employ single-shot actions. However, with PRS/NRL rifles you’ll be shooting from a magazine. Likewise many hunting rifles use magazines to enable quick follow-up shots. In selecting the best magazine(s) for your rifle and discipline you need to consider a variety of factors including fit, capacity, reliability, and, yes, cost. In this video Keith Glasscock examines a variety of magazines for bolt-action rifles used in PRS/NRL competition as well magazines for hunting rifles.

Barrel break-in is a controversial subject. With premium finish-lapped barrels from top manufacturers, some ace F-Class shooters get away with hardly no break-in — just shoot for score right from the get-go. On high-quality custom barrels, we’ve had success with minimalistic break-in with a few wet patches ever 3 rounds for the first 20 rounds. However, with relatively rough factory barrels, you may get better long-term results with a systematic break-in process, even using specialized products on your patches. In this video Keith Glasscock explains break-in procedures he’s found to work for various barrel types and applications.

In general, we have gotten the best match results with loads showing an Extreme Spread (ES) under 13 FPS and an extremely low Standard Deviation (SD). We know that F-Class and ELR shooters competing at 1000 yards and beyond definitely want an extremely low ES to minimize vertical dispersion at long range. That said, some short-range Benchrest competitors look at group size more than ES/SD. In this video, Keith Glasscock talks about the reloading process and methods for lowering ES and SD. Proper brass prep is important, as is precise powder measuring. And long range shooters may want to test 3 or 4 different powder types to find the one that offers the best combination of accuracy and low ES/SD.

Should you sort your bullets? If so, should you sort by weight, OAL, base-to-ogive, or max diameter? Which factor? Well the answer is “it depends”. You need to carefully examine a couple dozen bullets from each batch to see how consistent they are. We had some Lapua bullets that were ultra-consistent with 97 out of 100 within .0015″ base to ogive length. We used those bullets unsorted to set a local range record at 600 yards. On the other hand if you find significant differences in weights, diameters, or bearing surface lengths, you probably should sort. One tip — many shooters do not consider the width difference in bullets. We have seen 6mm bullet diameters vary from 0.2428″ to 0.2436″. We have one 3-groove 6BR barrel that likes the skinny bullets and another 6-groove barrel that definitely prefers the fatter bullets.

The Kestrel 5700 Elite Wind Meter boasts sophisticated ballistics capabilities and LiNK Bluetooth connectivity. With the Kestrel 5700 Elite, once you enter data about bullet type (and BC), velocity, zero, and rifle, the Kestrel can calculate come-ups and wind corrections. The Kestrel 5700 can “talk” to a mobile device that runs the Applied Ballistics APP that contains bullet databases and allows you to easily enter key information such as muzzle velocity, bullet BC, zero distance, velocity, wind, and environmental factors. In this video Keith Glasscock explains the Kestrel 5700’s features including the ability to program sectors for a PRS/NRL match.

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