Home Forums Hunting & Shooting AR and Tactical Rifles 7.62x39 in the AR-15

Did some velocity comparison today between the Tula 122gr FMJ vs Tula 124gr FMJ.

16" barrel. Chrony F1. 10 yards.



122 grain:

2376
2347
2372
2369
2402
avg: 2373
…………………….

124 grain:

2393
2421
2433
2422
2397
avg: 2413

Fired same gun, same day (today). Temp about 50F.

Interesting that the 124gr is 40 fps faster on average.

I was doing some internet searching to try to learn the differences between the 122gr fmj, and 124gr fmj.

One shooter wrote that he had pulled down about five rounds of each weight. The bullets were all the same weight, but the 124gr labeled had a heavier powder charge by a grain or so.


Here's a new pic of the 7.62x39 carbine. Made a couple changes. Put on a carbine stock wit an H3 buffer, UTG handguards, and a Magpul vertical grip.



I just like this thing. Put a couple hundred rounds through it today shooting close. Mostly 25-50 yards quick fire, working on some muscle memory. Did a little 100-150 yard rock busting, offhand.

Did some further shooting with the 14.7" 5.56. Went out to 650 yards using thePrimary Arms 5X with their reticle.