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August 4th, 2022

Blueprinting Rem 700 Action — “How-To” with Rifleshooter.com

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizing

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizingYou may have heard the phrase “blueprinting an action”, but do you know what that really means? Do you know what operations are done to an action during the blueprinting process? To help you understand, gunsmith Bill Marr of RifleShooter.com has created a helpful article showing a Rem 700 blueprinting job start to finish. This article spotlights how the procedures can be done with manual tools. Bill, who runs 782 Custom Gunworks Ltd., can also perform many of these operations with modern automated machinery. In fact, Bill has written a follow-up article on Truing a Rem 700 receiver with a Lathe.

READ Full Action Blueprinting Article HERE with 30+ Photos »

Bill explains: “Blue-printing, or truing a rifle action, ensures the receiver face, threads, lugs, bolt lugs, and bolt face are square to the center line of the receiver.” In Bill’s informative article, Bill shows how he blueprints a Remington 700 short action receiver with .308 Win bolt face. He covers the following procedures step by step:

Action Disassembly
Ream Minor Diameter of Receiver Threads
Square the Receiver Lugs
Square the Face of the Receiver
Lap the Bolt Lugs
Square the Bolt Face

Bill employed a variety of tools from Brownells to complete the blueprinting job, including: Remington 700 Armorer’s Kit; Manson Receiver Accurizing Kit; Bolt Lapping Kit; Bolt Face Truing Tool; Manson Receiver Ring Facing Cutter; Multi-Vise with Jaw Pads; Silicone Carbide Abrasive; and Do-Drill Cutting Oil.

Highlights from the Rifleshooter.com article:

1. Chasing the Threads

We use the bushings to guide the receiver tap. This chases the threads and ensures they are square.

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizing

2. Truing the Receiver Face

Using the receiver facing tool, the front of the receiver is trued. The tool is placed over the tap and turned by hand. We used Do Drill to lubricate it.

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizing

3. Lapping the Lugs

The bolt lapping tool screws into the front of the action and applies rearward pressure on the bolt face. A little bit of lapping compound is placed on the front of the receiver lugs. The bolt handle is then raised and lowered repeatedly. Note — it is critical that we do not get any lapping compound on any other surfaces.

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizing

4. Truing the Bolt Face

On this bolt, the central part of the bolt face was low. After the truing operation, this Rem 700 bolt face is now completely square to the action.

Bill Marr Rifleshooter.com truing Remington Rem 700 action accurizing

READ Blueprinting Rem 700 Action with Lathe Article HERE »

IMPORTANT: Rifleshooter.com states: “This article highlights our project and is presented for information purposes only. This provides an overview of the process and should not be attempted without the guidance and supervision of an experienced gunsmith“.

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August 4th, 2022

GUNFEST at Sturgis Rally in South Dakota — August 5-7, 2022

Sturgis south dakota gunfest 2022 gunborker sig sauer

This week, as part of the annual Sturgis Motorcycle Rally, there will be shooting range demo days — the inaugural GUNFEST 2022 presented by GunBroker.com. This 3-day event at the Buffalo Chip Shooting Complex gives visitors the opportunity to test out the latest firearm products, ammunition, accessories and more in a supervised, controlled environment.

Participating companies include: AMMO Inc., Bellmark, Boss Bullets, GunBroker, IWI, KelTec, Kimber, SIG Sauer, Silencer Central, Springfield Armory, Umarex, and Walther.

Sturgis south dakota gunfest 2022 gunborker sig sauer

GUNFEST 2022 offers visitors the chance to try out live ammunition, thermal optics, air guns, shotguns, rifles, and handguns in private shooting lanes. The event is free and open to the public — but shooters must purchase the ammunition they use.

GUNFEST is a three-day shooting event held August 5th, 6th, and 7th at the Sturgis Buffalo Chip Shooting Complex. General admission is free but shooters must pay for ammo. Attendees will have the opportunity to try out new firearms and suppressors. The event runs from 8:30 am to 3:00 pm on Friday, Saturday, and Sunday, August 5-7, 2022.

Location: Buffalo Chip Shooting Complex – 20622 Fort Meade Way, Sturgis, South Dakota

Sturgis south dakota gunfest 2022 gunborker sig sauer

Guidelines for Participation at GUNFEST
Participants must first register with valid ID. Those who want to test firearms must then purchase an “ammunition punchcard” offering 25, 50, 75, or 100-round ammunition “round experiences”.

The event website explains: “When you decide what firearm you’d like to experience you will let the Sponsor booth’s representative know what you’d like to shoot. The Sponsor booth’s representative will then have their assigned GUNFEST RANGE OFFICER escort you and the firearm you’ve selected to experience into 1 of the Sponsor’s private shooting lanes.

It is here, AND ONLY HERE, ammunition will be provided to the participant to shoot at the various steel targets down range within the assigned range lane. NO ammunition will leave the range firing line and NO REFUNDS on ammunition purchases.”

This Video was filmed in 2017 at the Sturgis Shooting Complex during Rally Week:

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August 4th, 2022

Estimate Crosswind Deflection WITHOUT a Meter — WIND HACK

Applied Ballistics Crosswind Estimation Wind hack G7 BC

Applied Ballistics Wind Hack

Any long range shooter knows that wind is our ultimate nemesis. The best ways of overcoming wind are to measure what we can and use computers to calculate deflection. The Applied Ballistics Kestrel is a great tool for this. As good as our tools may be, we don’t always have them at our fingertips, or they break, batteries go dead, and so on. In these cases, it’s nice to have a simple way of estimating wind based on known variables. There are numerous wind formulas of various complexity.

Applied Ballistics Crosswind Estimation Wind hack G7 BC

The Applied Ballistics (AB) Wind Hack is about the simplest way to get a rough wind solution. Here it is: You simply add 2 to the first digit of your G7 BC, and divide your drop by this number to get the 10 mph crosswind deflection. For example, suppose you’re shooting a .308 caliber 175-grain bullet with a G7 BC of 0.260 at 1000 yards, and your drop is 37 MOA. For a G7 BC of 0.260, your “wind number” is 2+2=4. So your 10 mph wind deflection is your drop (37 MOA) divided by your “wind number” (4) = 9.25 MOA. This is really close to the actual 9.37 MOA calculated by the ballistic software.

WIND HACK Formula

10 mph Cross Wind Deflection = Drop (in MOA) divided by (G7 BC 1st Digit + 2)

Give the AB wind hack a try to see how it works with your ballistics!

Some Caveats: Your drop number has to be from a 100-yard zero. This wind hack is most accurate for supersonic flight. Within supersonic range, accuracy is typically better than +/-6″. You can easily scale the 10 mph crosswind deflection by the actual wind speed. Wind direction has to be scaled by the cosine of the angle.

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