vinconco

I didn't need a cell phone.... I just cut the frag out of my wife's neck with a sharp pocket knife. Not all women are pussies. Just sayin'

My wife caught a jacket frag in her neck that missed the carotid artery by hair. We were shooting a USPSA indoor match and they used steel knock down plates set on pedestals. The foot welded on the bottom of the plate forms a right angle and directs frags back to the shooter. They still sell these damn things and I see them in matches all the time.

I have mine done on a commercial laser table and I'm able to get the hole cut precisely @ .515" x .515" with a .040" radius in the corners. This accepts the 1/2" square shoulder of a carriage bolt that fits with just enough clearance to be easily inserted but tight enough to keep the bolt head flush to the plate. Better than a hex bolt but not quite as good as a machine fit plow bolt.

I've used plow bolts. They are tough and hard. Countersinking the plate would make the surface completely flat, an ideal situation. But countersinking AR500 is beyond the scope of most enthusiasts and I'm not sure how it would be done in a production scenario and still be cost effective.

Any right angles will send frags backs. The worst offenders are target plates welded to a "foot" and set on pedestals as "knock down" plates. Large Hex bolts, hooks all form right angles. Texas Stars send back a fair amount of frags too. Here is an example of a properly designed target plate. The bolt hole is square to accept Carriage Bolts which have rounded low profile heads that reduce splash back. Always use high tensile Grade 8 bolts. The heads pop off the hardware store junk. The plate hangs by gravity at approx 10% back angle. The plate is loosely mounted and very reactive and rings like a bell. VIDEO 12 GA. SLUG ON THIS TARGET

One spring. The OEM extractor failed on mine at about 5k rounds. and I replaced it with the Aftec. Two springs was too tight in mine and one was just right. I think I put the spring in the rear hole.

I figured it out !... I had a KAW Linear muzzle device on it that was obviously creating back pressure. I didn't notice it much when I first built the PCC but maybe it got worse as it fouled up. Took it off and problem solved. Now I need something that won't create back pressure to cover the barrel threads. IS there such a thing as a "Comp" that works with 9mm pressures?

It's the Taccom buffer system

The door is closed and I even put tape over it to test it. Then I put tape across the back of the upper extending past the right hand side to see if that would stop the gas... and it did. This means the gas is coming from around the bolt.

I built a PCC a few years back using a New Frontier upper (side charge), lower, barrel and bolt. It has a ton of ammo through it but I'm experiencing something new. I'm getting gas blowback in my right eye (shooting right hand). I had the barrel recut for a deeper chamber, plunk tested the ammo, cleaned the bolt and barrel and I'm still getting gas back in my eye. I'm shooting 124 FMJ TC @ 1190 fps using federal 100's and IMR4756 (because I have a ton of it and shot it for years in a 38 super) COAL 1.125" Any one else have this problem? I tried searching but the search terms bring up too much unrelated stuff.

Don't do it.... SEND IT BACK and have them do it. That's what I did with my New Frontier match barrel. It took a little insisting but they do realize what bad press will cost them.

I just put one on mine with the Vortex co witness QD mount. I can run a scope (1 x 4) , the dot or irons. The dot co witnesses with the scope so zero can be checked easily or longer shots taken using the scope. Scope is on a QD so it comes off easily and maintains zero. I like the setup and I like the Venom. Have one on my Hi Cap 1911 9mm too.

Redding makes a nice bushing bump die

I have a New Frontier Match barrel that needed re chambered because the throat was too short. I'm thinking most of these barrels came from the same manufacturer using the same worn out reamer. New Frontier did eventually fix it for me. I did develop a long range load for it that will consistently print under 6 inches at 200 yards. It seems the bullet is the main factor in longer range accuracy. I'm using 124 jacketed flat nose (RMR Matchwinners) over 5.7 IMR 4756 and a Winchester SR primer with a calculated velocity of 1175 fps. Using my Applied Ballistics App and a BC of .156 I generated a firing solution out to 460 yards and was able to put hits on a 24" round by dialing up the drop on my Vortex 1 x 4 viper PST of 21.5 mils. Round nose bullets did NOT perform well past 100 yards. Here is a video of me shooting a 10" square plate @ 200 yards rapid fire using this load. (2nd part)

I can control the angle by the location of the bolt hole and the length of the bolt. Here is an example of the extreme