Technical Information

 

Dan Theodore - The Paper Patch Chronicles III

Dan Theodore - Another Day the Paper-Patch Way

Dan Theodore - American Creedmoor Cup - Paper Patch Discussion

A Champion Talks about Offhand Practice (an 80K PDF file)


Since the .22 Rimfire silhouette matches are becoming more popular these days, this book could give you a jump start into better .22 shooting (click on the image,below, to jump to the book site.)

          


"How Bullets Fly" (from the good people at Fulton Armory)

Dan Theodore - Effects of Headwind and Tailwind on Elevation

Dan Theodore - Bullet Stability

Dan Theodore - Report on the NASA bullet in Arizona

Dan Theodore - Boattails for BPCR

Dan Theodore - Clean Rifle and 6th Shot Effects

Dan Theodore - Post-Post-Script - Clean Rifle and 6th Shot Effects Stats II

Dan Theodore - 500 meter Testing 3 Heavy 45-caliber Bullets

Dan Theodore - Search for the Magic Bullet

Dan Theodore - A Tale of Two Bullets at 1,000-yards

Dan Theodore - Pit Safety Letter of 2-23-05

Dan Theodore - BPCR Lube Thoughts and Findings

The Future of .38 in Creedmoor at Raton

Dick Trenk - Double and Single set Trigger Adjustment

Dick Trenk - "The Plevna Delay - Winchesters and Peabody-Martinis in the Russo-Turkish War," A small Turkish army is trapped, but with the help of surprising firepower, they hold up the entire Russian Campaign for over five months. A very interesting article on BPCR in long-range warfare. Check it out.

Dick Trenk - A visit to the Pedersoli Plant - a Pictorial Tour

Dick Trenk - How to Use Tang Type Rear Sights and Insert Type Front Sights

Dick Trenk - Pedersoli Proof Test Rules and Allowable Limits

Dick Trenk - Pedersoli Muzzle Loading Rifle Powder Charge Selection

Dick Trenk - Pedersoli Barrel Break in Recommendations

Dick Trenk - Black Powder Cartridge Reloading Guide

Dick Trenk - Choosing an Accurate Black Powder

Dick Trenk - How To Charge Cases for Best Accuracy

David Tubb Articles on Competitive Shooting - The 11-time National Champion writes on improving your shooting

Frogmoor Ballard - The Old and the New

Cleaning Cartridge Cases with 4mm Angle-Cut Cylindrical Ceramic Media - Jim Betush

Cleaning Cartridge Cases with Ceramic Media, Updated Process Instructions - Jim Betush

Competition BPCR - a Simplified View

Basic Rules of BPCR Competition

Pedersoli-Gunn-Trenk bullet - a detailed drawing

Corrosion/Rust Prevention Tests

How Far Will a Sharps Shoot? - Mike Venturino

How to Read a Vernier Scale

Paper Patching - Brent Danielson's Web site

Barrel Break In - Some Views on Properly Educating a 'Dumb' Piece of Steel Greg Cameron

This is not BPCR, but is definitely worth a look, folks. I have posted ten relatively high quality images of a brand new SAKO bolt action rifle in .300 Winchester Magnum caliber, with synthetic stock, and fluted barrel. On the 15th shot out of the box, it went KA-BOOM! The first 14 shots were from a box of Hornady factory ammunition. The fifteenth shot was from a new box of Federal factory ammunition.

The barrel is now in three totally separate, longitudinal pieces, the receiver is split down the middle, with left and right halves, and the forestock is a black plastic memory. The cartridge case is split from mouth to case head, and looks like a three-petaled flower.

With the limited number of images available - here are my thoughts on the event:

To my non-professional (since I don't get paid for my opinions,) eye this is a failure caused by included flaw(s) in the barrel steel. Once the barrel started to fail, the fractures continued forward, generally along the edge where the flutes join the major diameter of the barrel. Note, in the image of the cartridge case, there does not appear to be any significant swelling, or deformation, of the case head, itself, and I can not see any melted brass, or brass flow. I cannot see any brass flow in the shattered area of the split barrel, either. To my mind, that precludes the possibility that it was a high pressure round causing the failure. (Unfortunately, I do not yet have any images of the case head, itself, or of the bolt face, which might add additional credence to my point.)

The shooter was NOT seriously harmed because he was shooting from the bench, apparently wore proper protective gear, and had his arms cradled under the butt - in the rear sand bag area. OK. enough teasing. Here's the link to the photos. - Rick A. Shay, Colorado

An update on the SAKO ka-boom report above.