June 27th, 2017

.338 Lapua Magnum Improved Barrel Block Beast for K02M

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Report by Corbin Shell
Not long ago, I learned of the King of 2 Miles (KO2M) shoot held in Raton, NM and was fortunate enough to get an entry slot. I will be shooting with David Tubb, multi-time High Power and Long Range National Champion, on a team we call the “Second Amendment Cowboys”. Given such short notice, I scrambled to find the necessary components to build a suitable rifle for the event. I turned to longtime friend and owner of X-Treme Shooting Products (XTSP), Tom Myers, to see if he might have a suitable action. XTSP is known for its premium titanium rifle receivers, however XTSP also manufactures stainless actions. As luck would have it, Tom was completing a small run of .338 Lapua Magnum-sized stainless steel single-shot actions. Other components were sourced as quickly as possible and the building began in earnest.

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Before acquiring the first component for this build I already knew who was going to perform the work, Doyle Anglin at Dixie Guns, inc.. Doyle’s attention to detail and rifle building knowledge is second to none! I came to Doyle with the idea of building a rifle to shoot in the King of 2 Miles match and his ears perked up. Once all the components were in hand Doyle began construction. Doyle was given free liberty to build whatever he felt best for the job given the time constraints and components that were readily available on such short notice. I cannot thank Doyle Anglin enough for the stellar job he did!

Rifle Builder: Doyle Anglin, Dixie Guns, doylebbang@windstream.net
1010 Hancock Bridge Road | Winder, GA 30680 | 706-654-8400 phone

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

KO2M .338 Lapua Magnum Improved — Rifle Components

— Custom laminated stock Doyle Anglin designed and created from scratch
— 10″-long aluminum barrel block designed and made by Doyle Anglin
— XTSP (X-Treme Shooting Products) PH420 stainless single shot receiver 1.450” diameter. PVD-coated receiver body. FNC-coated one piece bolt.
— XTSP +35 MOA and +60 MOA tapered Picatinny rails, PH420 stainless, PVD-coated
— XTSP two-stage trigger with safety
— Krieger 1:9.3″-twist barrel. 1.450” for 6.5” tapering to 1.100” at the muzzle. 33.5″ finished length
— Piercision Rifles 3/4×24 slab-sided, 5-port muzzle brake
— BAT stainless trigger guard
— Masterclass cheek piece with extended rods
— Masterclass butt plate hardware
— Duplin Bipod
— Spuhr +20.6 MOA one piece scope mount
— Ivey +175 MOA adjustable scope mount
— Sightron SIII 6-24x50mm MOA-value scope (100 MOA of total travel)
— Geier & Bluhm 10 minute precision bubble level mounted to barrel block via extension rod
— Manson .338 Lapua Magnum Improved 30-degree reamer, .375” neck diameter

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Load Information
— Sierra 300 grain MatchKing, meplats trimmed and pointed, seated .010″ into lands*
— Hodgdon Retumbo Powder, 101 grains
— Peterson .338 Lapua Magnum brass
— Federal 215 primers
— Jim Carstenson custom reloading dies: inline seater, full-length bushing, neck bushing and threaded micrometer seating die

This load has achieved 3050fps with low single-digit SDs

Given the 12-pound barrel weight, Doyle strongly suggested a barrel block to offer additional support and increase rigidity. Doyle created a split ten-inch aluminum barrel block and mating steel plate that is inletted into the forend of the custom laminated stock. The 1:9.3″-twist Krieger barrel is epoxied into the barrel block as well as being held in place by the ten socket head cap screws. Two hardened and ground pins locate and index the barrel block onto the steel mating plate. The steel mating plate acts as the recoil lug which mates up to the cut on the reward section of the barrel block. The Krieger barrel is chambered with a 30-degree Lapua Magnum Improved reamer and throated accordingly, yielding a loaded round of approximately 4.000 inches.

The barrel is capped with a very effective Piercision Rifles 3/4×24 slab-sided, five port muzzle brake. The size proportions of the muzzle brake work well with the 1.100” muzzle diameter, however it will work on barrels up to 1.450″ in diameter.

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Doyle Anglin worked his creative magic and constructed the multi-color laminated stock from a blank. The five inch fore-end allows the rifle to be utilized in a dual role — either benchrest or prone with bipod. The cheek piece hardware is from Master Class Stocks and is adjustable for cast on/off with preset elevation settings via half-moon shaped clips. The two-way adjustable butt plate hardware also comes from Alex Sitman at Master Class Stocks. The multi-colored laminate stock is clear-coated with special marine UV inhibitor paint. The glass smooth finish makes the wood appear wet and is extremely smooth to the touch.

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Lots of Elevation on Tap with Angled Rails, Spuhr and Ivey Mounts
Topping off the rifle is either a +35 or +60 MOA X-Treme Shooting Products Picatinny scope rail. The receiver and scope rails are pinned for accurate repeatability when interchanging. Five 8×40 socket head cap screws firmly hold the scope rail in place. A SPUHR +20.6 MOA tapered, one-piece scope mount securely grasps the Sightron SIII 6-24x50mm MOA scope. I cannot say enough good things about the quality of the SPUHR scope mount! This is the only fixed scope mount that I will use going forward and a special thanks goes out to Ulf at SPUHR! The 35 MOA rail and 20.6 MOA SPUHR mount setup allows full utilization of the Sightron’s 100 MOA of internal travel. The second scope setup is comprised of an Ivey +175 MOA adjustable scope base and Sightron SIII 6-24x50mm optic.

Scope in SPUHR mount shown below:
.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

Scope in IVEY Mount with barrel block-mounted precision bubble level:
.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

When shooting extended long range (ELR) it is important that the scope’s crosshairs remains level. Should the crosshairs be canted it will induce impact shift which increases with the angle of cant and distance. The decision was made not to use any of the lesser quality/precision bubble levels that currently flood the market. These levels have poor resolution usually between one and two and a half (1-2.5) degrees. It must be noted that not all levels are created equal. The fine folks at Geier & Bluhm offered up a solution with a precision glass vial horizontal level with an accuracy of ten minutes. As a refresher, one degree is comprised of 60 minutes of angle. The level setup we chose for this rifle is, at minimum, six times more accurate than the best scope or picatinny level on the market. The 10 MOA bubble level sensitivity is just about perfect and does not create a situation of having to “chase” the bubble left and right when in position.

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

A portable 150 MOA tall target was created to test both scope tracking and crosshair alignment. When testing at the local 100-yard range I got a lot of strange looks and a few inquiries as to why in the world was I shooting thirteen FEET above the aiming bullseye.

As the F-TR shooters have learned, it is very important that the rifle travel freely and repeatable under recoil. I turned to Ray Gross who custom made a rubber and Cordura shooting mat which the bipod rides on. This mat is of the same material and construction that most of the F-TR team is utilizing. The rubber durometer is correct so the rifle does not bounce or hop when fired. The bipod skis slide very easy on the Cordura-topped mat. A big thanks goes to Ray Gross for assisting with the mat setup. In addition, high molecular weight polyethylene (HMWPE) tape was applied to the butt stock of the rifle. The HMWPE tape allows for extremely low friction between the butt stock and rear sand bag. This configuration tracks very well and slides rearward like it is on rails.

.338 Lapua Magnum Improved KO2M David Tubb Corbin Shell Tall Target

As load development progressed I tested three different brands of projectiles. A ladder test was performed at 300 yards to determine where the node was with my barrel and powder combination. The rifle liked between 99-101 grains of Hodgdon Retumbo. I then proceeded to shooting ten shot groups at 1000 yards. In this rifle the Sierra 300gr Matchking was hands down the winner for smallest groups and the best elevation at 1000 yards. The load settled on is 101 grains of Retumbo and 300 grain Sierra Matchking. 500 Sierra bullets were measured base to ogive and the spread over the entire 500pc measured .003” with 490pc varying by .001”. Keep up the good work Sierra Bullets! A special thank you goes to John Whidden for generously allowing me to come to his shop and repoint the Sierra .338 projectiles and allowing me to test at his 1000 yard range.

Preparation for the King of 2 Miles match has been a great learning experience and a lot of fun! Next year’s rifle design is already in the works and should be an over the top build. Stay tuned to AccurateShooter.com for further details!


* The Sierra 300gr MatchKings were meplat-trimmed and pointed using the original pointing system made by Ferris Pendell for Jim Hardy. A big thank you goes out to John Whidden for allowing me to come to his shop and use the original bullet pointing system.

Permalink Bullets, Brass, Ammo, Competition, Gear Review, Gunsmithing 4 Comments »
June 27th, 2017

Smart Product: Custom-Fitted Cardboard Ammo Storage Boxes

Repackbox fitted cardboard ammo ammunition storage box printed labels

Here’s a smart product for folks who load and store large quantities of ammunition. With these white cardboard ammo boxes from Repackbox.com, you can store pistol, rifle, and shotshell ammo very inexpensively. A set of 30 boxes costs $13.95 ($0.47/box), while a 100-Box Bundle costs just $22.95. That works out to just $0.23 (twenty-three cents) per box — very cheap!

All boxes are Made in the USA of .024 thick, acid free, virgin card stock. The boxes are printed with Cartridge Type (Caliber), number of rounds enclosed, and an outlined box where a printed label can be placed. Included with each set are Blank Avery 5167 Labels which can be printed with load/bullet data or other info. The box kits even come with white gloves to keep your ammo grease-free. Order these ammo repack box kits from Repackbox.com.

There are many advantages to these cardboard boxes. They are inexpensive and they store ammo very efficiently, not using much space. You can arrange them in any orientation (unlike some plastic ammo carriers). We like these boxes for varmint safaris and other adventures when we’re transporting many hundreds of rounds of ammo. They are also a smart choice for bulk shotshell ammo, as they are much less expensive than plastic shotshell cases. For pistol shooting we still like see-through, plastic flip-top boxes at the range, but these white cardboard boxes are great for storing large quantities of pistol ammo produced on progressive presses. NOTE: These boxes do NOT have individual dividers between the cartridges. And no, the boxes are NOT waterproof — you’ll want to keep them in an ammo can on rainy days.

30-Box and 100-Box Kits are available for all these Pistol and Rifle Cartridge Types:

PISTOL Cartridges
.380 ACP
.38 SPL/.357 Magnum
9mm Luger
.40 S&W
10mm
.44 Magnum
.45 ACP
.45 Long Colt
RIFLE Cartridges
.223 Rem/5.56×45
.30 Carbine
30-30 Winchester
.303 Brit
7.62×39
.308 Win/7.62×51
7.62x54R
.30-06 Springfield

In addition, there are boxes for 12 gauge shotgun ammunition.
Repackbox fitted carboard ammo ammunition storage box printed labels

Repackbox fitted carboard ammo ammunition storage box printed labels

Permalink Bullets, Brass, Ammo, Gear Review, New Product No Comments »
June 27th, 2017

Summer is Here — Essential Summer Survival Guide

Stonehenge summer solstice sunrise
Solstice Sunrise at Stonehenge. Photo shared under Creative Commons License.

Yes, folks, it’s officially summer now… This year’s Solstice, considered the official start of summer, was celebrated Wednesday, June 21, 12:24 A.M. EDT. We hope you have fun this summer with your friends and family. To help ensure those summer adventures remain safe and trouble-free, the CTD Shooters’ Log has prepared a helpful Essential Summer Survival Guide. This is worth reading before you venture away from civilization.

CLICK to READ Essential Summer Survivors Guide »

Here are some highlights of the article with links for MORE INFO:

first aid kitFirst Aid Kits for Campers
You should never venture outside without a first aid kit close at hand. While exploring the outdoors, all types of accidents can occur—from cuts, scrapes, and burns to broken limbs and severe allergic reactions.

Basic Survival Skills
Basic survival skills are a necessity if you plan to spend any amount of time outdoors. These five tips, plus a how-to on what to pack in a lightweight, basic survival kit will help if you are ever stuck, lost, stranded or injured in the field.

How to Treat Burns
Fireworks, barbeques and campfires — in the summer we are frequently around fire, which increases our chance of getting burned. A first-degree burn is most likely home treatable, while a third degree burn requires immediate medical attention. Learn how to spot the differences between minor and severe burns.

Permalink News, Tech Tip No Comments »