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February 17th, 2021

How to Blueprint a Rem 700 Action — Rifleshooter.com Reveals

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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February 17th, 2021

TECH TIP: When and How to Use Bore Snakes

Barrel brush bore-snake boresnake shake barrel cleaner brush

Handloading USAMU Facebook Bore Cleaning

On Wednesdays, the U.S. Army Marksmanship Unit often publishes a reloading “how-to” article on the USAMU Facebook page. One “Handloading Hump Day” post covered bore-cleaning, specifically the use of pull-through style bore-snakes. Visit the USAMU Facebook page each Wednesday for other helpful tips.

Today, we’ll shift from handloading to rifle bore cleaning and maintenance, with information courtesy of the USAMU’s Custom Firearms Shop. We recently had some inquiries about bore cleaning, and this seems a good opportunity to share. After all, even the best handloads won’t yield their full potential in a poorly-cleaned and maintained rifle.

NOTE: Hoppes claims a trademark on the term “BoreSnake” (one word, no hyphen). For this article, the USAMU has used the term in hyphenated form, two words. We believe the USAMU is referring to a Hoppes Brand Boresnake, not a different bore cleaning rope.

BORE-SNAKES: MIRACLE REPLACEMENT FOR THE CLEANING ROD?
The experiences of both our firearms test specialist and this writer have given no evidence that proper use of a clean bore-snake will damage a match barrel. Of course, one does not pull the bore-snake at an angle to the crown when removing it — pull it straight out, parallel to the bore’s direction, to prevent crown wear over time.

USAMU Handloading facebook page bore snake cleaningBore-snakes are very useful for some applications (primarily a hasty, interim wipe-down). In [my] experience they cannot replace a thorough cleaning with a proper rod and brushes. While the experiment cited here involves rimfire, it may help illustrate. Several years ago, the writer used his new, personal Anschutz to investigate the bore-snake issue. It had been fired ~350 rds with match ammo and had had 3 typical rod/brush cleanings.

Next, starting with a clean bore, the writer fired 300 more rounds without cleaning in order to build up a “worst-case” fouling condition. Afterwards, the writer examined the bore with a Hawkeye bore scope. There was a uniform, grey film down the entire barrel, with some small, intermittent lead build-up at and just forward of the throat.

Some bore-cleaning rope products feature separate, detachable bronze brush and bore mop segments. This allows more usage options (e.g. mop only), and makes it easier to clean the brush elements:
Barrel brush bore-snake boresnake shake barrel cleaner brush

A new bore-snake was then wet with solvent and pulled through the bore. The Hawkeye revealed that the grey fouling was gone, and much of the visible fouling at the throat was reduced. However, nine more passes with the bore-snake, checking after each with the Hawkeye, revealed no further improvement in cleaning. The writer then cleaned with two wet patches, observed, then one stroke of a new, wet bronze brush, and one wet patch to clean out residue.

USAMU Handloading facebook page bore snake cleaning

The Hawkeye showed a significant reduction in fouling at the throat; it was virtually gone. A second pass with a wet bronze brush and a wet patch removed the remaining fouling. Scrubbing the bore further, checking to see how much fouling was removed, revealed no significant improvement. The reason for this test was to learn what’s needed to get (and keep) this Anschutz clean with minimal cleaning rod use — and thus, minimal risk of bore damage/wear. Leaving fouling in the bore promotes corrosion over time.

Obviously, this applies to a nice, smooth rimfire match barrel, using good, well lubed ammo. It doesn’t apply directly to the use of copper-jacketed bullets, which leave a stubborn fouling all their own. However, it does suggest that while the bore-snake can be helpful and a useful field-expedient, to truly clean a rifle barrel one will still need a good quality rod, bronze brush and solvents. [Editor: Add a good-fitting cleaning rod bore guide.]

SO, WHAT ABOUT BORE SNAKES FOR BARREL BREAK-IN?
The goal of barrel break-in is to fire each shot through a clean barrel, preventing copper buildup and allowing the bullets their best chance at burnishing sharp edges. Thus, it seems this purpose would be best served by one’s usual rods, brushes and rod guides.

Permalink Gear Review, Tech Tip 4 Comments »
February 17th, 2021

FREE Fun & Games Printable Color Targets

shooting paper printable billiard cue ball stripes solids target

Good news folks — most states have lifted restrictions on shooting ranges. Subject to “social distancing” and safety requirements (masks etc.) many public ranges and private shooting facilities are now open for business. If the weather permits, we encourage readers to head to local ranges which are permitted to operate. Use the opportunity to get out of the house, enjoy some fresh air, and dust off those skills. To help you have fun on your range trips, here are 12 FREE printable targets.

NSSF Free Fun targetsFREE FUN Targets from NSSF
The Billiards Table Target above offers 15 brightly-colored numbered balls with the cue ball at the bottom. Aim for the numbers, shooting 1-15 in sequence, or alternate between stripes and solids. You can also draw an “X” on the white cue ball (or attach a paster), and use that to set your zero. This target is fun for shooting outdoors with rifles at 50 or 100 yards or indoors with pistols. This billiards target is part of a set of 12 Fun Targets from the NSSF. These were issued a couple seasons back for National Shooting Sports Month, held in August of each year.

FREE NSSF Fun Targets — Dartboard, Golf, Billiards, Bowling, Baseball and More…

HERE are a dozen FREE Targets. Along with Bullseye targets, there are some very cool specialty targets here, including a Golf Course Target, Baseball Diamond Target, Billiards Target, Light Bulb Target, Bowling Pin Target, and even a Windmill Target. Enjoy the myriad possibilities with these 12 fun targets.


» CLICK HERE to Get All 12 NSSF Targets in .ZIP Archive

August National Shooting Shoot sports month celebration NSSF

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