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January 19th, 2024

See How Rem 700 Action Works with 3D “X-Ray” Animations

3d firearms modeling gun CGI software encylopedia gun disassembly

Ever wish you could look inside your rifle, to see how the trigger and fire-control system work? Well now that is possible with the magic of 3D computer graphics. Modern software allows detailed “cutaway” side-views (see below), as well as 3D views with 360° rotation. The software can also provide X-Ray-type views into the gun’s internals — as you can see above. And computer animation can show the complete firing process from trigger pull to chambering of the next round.

Rem 700 Cutaway View from Right Side
3d firearms modeling gun CGI software encylopedia gun disassembly

This article provides some very cool 3-D “Cutaway View” animations of the popular Remington 700 action, probably the most successful American bolt-action ever created.

READERS — Take the time to watch the video! The Rem 700 animation is really outstanding! EVERY bolt-action shooter should watch this video all the way through.

Cutaway 3D Animation of Rem 700 Action — Watch Video

The Model 700 series of bolt-action rifles have been manufactured by Remington Arms since 1962. All are based on basically the same centerfire bolt action. They are typically sold with an internal magazine depending on caliber, some of which have a floor-plate for quick-unloading, and some of which are “blind” (no floor-plate). The rifle can also be ordered with a detachable box magazine. The Model 700 is a development of the Remington 721 and 722 series of rifles, which were introduced in 1948.

3d firearms modeling gun CGI software encylopedia gun disassembly

The Remington 700 is a manually-operated bolt action with forward, dual opposed lugs. It features “Cock On Opening”, meaning the upward rotation of the bolt when the rifle is opened cocks the firing pin. A cam mechanism pushes the firing pin’s cocking piece backward. The bolt face is recessed, fully enclosing the base of the cartridge. The extractor is a C-clip sitting within the bolt face. The ejector is a plunger on the bolt face actuated by a coil spring. The bolt is of 3-piece construction, brazed together (head, body. and bolt handle). The receiver is milled from round cross-section steel.

3d firearms modeling gun CGI software encylopedia gun disassemblyThis video was made with the help of the World of Guns: Gun Disassembly interactive encyclopedia with 3D rendering. This remarkable web-based software allows users to view the inner workings of hundreds of different rifles and pistols — everything from a .22 LR Ruger to a .55-caliber Boys Anti-Tank rifle. There are also 25,000+ parts diagrams. This is a remarkable technical resource. SEE MORE HERE.

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January 19th, 2024

Erratic POI Might Be Loose Barrel Issue, Not Scope Problem

loose barrel vortex scope optics point of impact change fix

Are you seeing unpredictable changes in Point of Impact on your target? Think you may have a scope issue? Well maybe not — when was the last time you checked your BARREL?

Yes scopes do fail, and scope bases/rings do get loose. But sometimes problems with erratic POI shifts are caused by a LOOSE BARREL. This issue came up a while back in our Shooter’s Forum. One member complained that his zero was shifting from day to day — by as much as two inches at 100 yards. He was convinced he had a scope problem, based on erratic POI:

“I think my scope loses 1 to 3 MOA per day. When I shot my rifle Monday it was dead on. On Tuesday it was 1″ low. Then on Wednesday it was 1 or 2″ lower. I don’t get it. — the elevation knob never touched. Scope will track and return to zero that day perfect. Yes EVERYTHING has been checked, nothing loose. What is the chance the erector tube spring has gone south? For the record this is a Vortex GE. Never had a bad scope, but this has me wondering”. — LB

On Forum member told LB to send the scope right back to the manufacturer. Two other members suggested mounting the scope on a different rifle to test. Good advice. That’s generally a smart strategy before you conclude a scope has gone bad…

Could Problem Be the Scope Base?
Two Forum members, ExPiper and Dickn52, suggested checking the scope base, recounting their past experiences with troublesome bases. This was intelligent — anyone with a POI problem should check all the optics attachments:

“Went crazy one day chasing my impacts on a 100-yard target. Shots would group fine for three then go nuts for 4-5. I cranked and un-cranked for about an hour. Then I reached up and the base wobbled on the rifle. Removed scope, tightened base screws and back in business.” — Dickn52

“Years ago I had a problem [where] shots were climbing with almost every shot. I was blaming the scope. However, when removing the scope I noticed that the 20 MOA base was cracked and getting wider with every shot. Needless to say I replaced the base and the problem was solved. — ExPiper

Eureka Moment — The problem was the BARREL, not the Scope

There were many helpful suggestions, but member PirateAmmo steered LB to the real problem — a loose BARREL: “We had a problem on a home-built AR-platform rifle once, barrel was loose a tad…”

Member Snert chimed in: “Yep — I had a PPC that suddenly went 19″ low. Picked up gun off bench by barrel and felt a wiggle. I tightened the barrel and the POI went 19 inches up”.

Problem Solved — Barrel Tightened up and POI Back to Normal
The gentleman with the POI problem took the advice of PirateAmmo and checked his barrel. BINGO! Low and behold, the barrel WAS loose.

LB posted: “Barrel loose by about 2%, checked it twice before and didn’t find it the first two times”.

After LB re-tightened his barrel, his rifle started shooting normally again. No more shooting low by 1-2 inches. Problem solved. The fix didn’t cost a penny and now LB doesn’t have to send a perfectly good optic back to the manufacturer.

Lesson learned? Check ALL the variables before you assume a scope has gone bad. Along with the barrel, also check your action screw tension, and of course the scope base and rings.

Permalink Gunsmithing, Optics, Tech Tip No Comments »
January 19th, 2024

Remembering John Nosler — Bullet Design Pioneer

RIP John A. Nosler

John Nosler lived 97 years, passing in 2010. During his long lifetime, John was an iconic figure in the shooting and hunting world. Considered a true pioneer in bullet and ammunition design, Nosler developed the famous Partition bullet in the 1940s. Born on April 4, 1913 in Brawley, California, John built his business from scratch. He founded his bullet company in 1948. He was considered to be one of the great innovators whose designs helped create the premium bullet category and influenced ammunition manufacturers worldwide.

Moose-Hunt Inspires Partition Bullet Design
While hunting in Canada, John experienced a bullet failure on the hide of a mud-caked bull moose. He then began developing a revolutionary new projectile, which he called the “Partition”, because of the barrier that separated the bullet into two sections. One year later, John and a friend traveled back to British Columbia with his new Partition bullets, which were designed to provide deep penetration and expansion. The men bagged two moose with two shots, and the rest is history.

Nosler Partition Bullet John Nosler

NRA Golden Bullseye Pioneer Award
In recognition of his contribution to the shooting sports industry, John was the unanimous choice for the inaugural 2007 NRA Golden Bullseye Pioneer Award. The award was the highlight of a long and fruitful career. Even though he officially retired in 1988 when his son and daughter-in-law, Bob and Joan Nosler purchased the company, John still managed to come to the office on a daily basis until his health declined.

Today, John’s son Bob Nosler still presides over the company as president and CEO of Nosler, Inc., based in Bend, Oregon. Along with bullets, the company now produces cartridge brass, loaded ammunition, and hunting rifles.

To learn more about John Nosler and his bullet designs, get your hands on Going Ballistic, a “Professional Memoir” told by John Nosler to outdoor writer Gary Lewis. CLICK HERE to hear a short John Nosler audio clip or to order the book from the author.

John Nosler remained an avid hunter and shooter even late in life. Gary Lewis recalled that, at age 92, John Nosler attended the opening of a new shooting range outside Bend, Oregon. Even in his nineties, Nosler managed to drill two shots inside nine inches at 1000 yards. John Nosler leaves a legacy that will benefit hunters and shooters’ nationwide. The John A. Nosler Endowment of The NRA Foundation, sponsors the NRA’s Basic Rifle Training Program which instructs novices in safe rifle handling.

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