The Firing Line Forums - View Single Post - Excellent Report on AR15 wear & tear over 10k rounds

Bartholomew Roberts · January 10, 2013, 08:12 AM

http://www.luckygunner.com/labs/bras...el-cased-ammo/

The authors of this report took 4 identical Bushmaster MOE rifles and fed them each a different brand of ammo for 10k rounds to note changes in wear and tear. The whole report is an excellent read; but some of the more interesting points to me were:

1. Russian ammo does cause additional wear - not so much from the steel cases but from the bimetal jackets. Barrels shot out roughly twice as fast and reliability worsened earlier.

2. An excellent example of how a midlength functions to take ammo that was marginal in a carbine and shoot it reliably from the midlength.

3. Those cheap components that look just like what comes in a Colt but cost half as much? They matter and affect reliability.

Great read and well worth your time.

January 10, 2013, 08:12 AM	#1
Bartholomew Roberts member Join Date: June 12, 2000 Location: Texas and Oklahoma area Posts: 8,462	Excellent Report on AR15 wear & tear over 10k rounds http://www.luckygunner.com/labs/bras...el-cased-ammo/ The authors of this report took 4 identical Bushmaster MOE rifles and fed them each a different brand of ammo for 10k rounds to note changes in wear and tear. The whole report is an excellent read; but some of the more interesting points to me were: 1. Russian ammo does cause additional wear - not so much from the steel cases but from the bimetal jackets. Barrels shot out roughly twice as fast and reliability worsened earlier. 2. An excellent example of how a midlength functions to take ammo that was marginal in a carbine and shoot it reliably from the midlength. 3. Those cheap components that look just like what comes in a Colt but cost half as much? They matter and affect reliability. Great read and well worth your time.