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July 18th, 2024

ForeArm Bag-Riders and Track Plates Enhance Stability

Whidden Gunworks Track Plate

ARs and Narrow-Forearm Sporters Benefit from Front Bag-Rider Blocks
Whidden Gunworks offers a smart product that will enhance the bench-rested accuracy of any rifle with an accessory rail on the forearm. The Whidden Track Plate fits securely in the forearm accessory rail on prone, cross-the-course, tactical, and Palma rifles. These guns typically have a narrow and/or rounded fore-end so they rock and wobble when used with a front pedestal rest. The TrackPlate cures that. Once installed it provides a rock-solid, 2.9″-wide platform that mates perfectly with a benchrest-type front sandbag. This gives sling-shooters maximum stability when testing loads or zeroing their sights or scope. Plus you can now shoot F-Class competitively with a prone gun. (The 2.9″ width is 100% legal for F-Open).

Whidden Gunworks Track Plate

The Track Plate is light-weight, has catamaran-style runners to aid tracking and prevent rocking, and can be easily stowed in a range bag. The Track Plate fits BOTH Anschutz and American style forends and is made in the USA of machined aluminum. The Track Plate is available from Whidden Gunworks for $58.50.

Plate designer (and 5-Time Nat’l LR Rifle Champion) John Whidden says: “The Plate is great for any rifle with a rail whether it ís smallbore, centerfire, or an air gun. Now you can try F-Class with your favorite prone rifle: the Plate has a perfect low-drag finish for riding a rest or sandbags and is competition legal.”

Bag-Riders for AR-Platform Rifles from EGW
AR owners should check out the 3″-wide Delrin bag-rider from Evolution Gun Works (EGW). There are two versions, one for front Picatinny Rails, and another that mounts via sling swivel studs. These EGW Bag-Riders were developed expressly to fit the fore-ends of ARs. The front bag-riders are contoured to match the handguard profile so they fits securely with no wobble.

The $49.99 EGW Picatinny Rail front Bag-Rider simply slides on your under-forearm rail and there is a a tension bolt. Attachment is quick and easy. Or, if your AR has no rail get the original $39.99 EGW front Bag-Rider that attaches to a front sling swivel stud anchor. That allows it to mount as easily as a Harris bipod — no rail needed! Just unscrew the swivel stud, put the front bag-rider in place and attach one hex-head machine screw.

EGW AR15 ar bagrider bag-rider front sled

Also with the two front Bag-Riders, EGW offers a Rear Bag-Rider for ARs that attaches via the sling swivel anchor. Overall, it is a slick system. Front and rear bag-riders can be attached in a couple of minutes. The Delrin blocks slide easily in the bags and make the gun ultra-stable. The gun tracks straight back.

Permalink Competition, Gear Review, Shooting Skills No Comments »

July 18th, 2024

Make Your Own Chamber Length Gauge from a Fired Case

do it yourself chamber length gauge Sinclair case neck

Here is a clever DIY tool we learned about from Frank Shuster, a Forum member, who, sadly, passed away in 2015. Frank was a very knowledgeable shooter who was always willing to help others. Here is one of Frank’s smart inventions. He devised a way to measure the length of a rifle’s chamber using a fired cartridge case. Frank’s system works by cutting a “collar” from part of the case neck. This then slips over a bullet seated in a case loaded without powder or primer. As you chamber the dummy round, the collar will move back to indicate the full length of the chamber. (Make sure the bullet is seated well off the lands so the dummy round can chamber fully.)

do it yourself chamber length gauge Sinclair case neck

The pictured gauge can be home made (for free) with components you already have on hand. Frank explained: “I used a Dremel cut-off wheel to cut the front half of the case neck off. A jewelers needle file to de-burr both rough-cut edges. The cut-off surface does not need to be perfectly square, because you are using the original straight mouth to make contact at the front of the chamber. Seat any old bullet to the approximate normal seating length. Next apply a tiny drop of oil on the ogive of the bullet, and slide the ‘collar’ over the bullet. Then chamber the dummy round and close the bolt. Extract the round slowly and carefully and take the measurement with calipers (see top photo).”

Frank’s DIY chamber length gauge works well. In a related Shooters’ Forum thread, Frank posted: “I’ve compared length dimensions doing it this way and with the chamber length shown on my chambering reamer drawings, and the Sinclair gauge, and they are all within .001″ or so.”

Commercial Chamber Length Gauges May Not Work with Custom Chambers

Frank did use Sinclair chamber-length gauges for some applications. These bullet-shaped gauges slip into a cartridge, but “it’s inconvenient to order that little gauge only… without spending $6 shipping for a $7 item.” Moreover, the Sinclair gauges may not fit a custom chamber with a tighter neck dimension because the diameter of the ring at the end is too large.

As an alternative to commercial gauges, the collar-type, homemade gauge will function properly in a custom chamber. The homemade gauge will work with smaller-than-standard chamber neck dimensions, as long as you use a piece of appropriately-turned fired brass that fits your chamber.

Permalink Bullets, Brass, Ammo, Reloading 1 Comment »

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