05-02-2019, 05:12 AM
Upper: AT3Tactical AT3 FF-ML 20 Inch 6.5 Grendel Complete Upper
https://www.at3tactical.com/products/at3...-handguard
It has:
a) Faxon Firearms Match Series 20 inch Heavy Fluted Barrel 6.5 Grendel 5R 416R Nitride Nickel Teflon Extension
b) Wojtek Weaponry Adjustable Gas Block
c) Faxon Firearms MUZZLOK 3-Port Brake
Lower: Rock River Arms LAR-15 with RRA TWO STAGE TRIGGER (great trigger can average about .5" groups with RRA .223 WYLDE Match Barrel)
Shot prone from lead sled, not ideal shooting conditions, variable wind gusts about 5-10 mph. Did not try to avoid the wind gusts, groups most likely would be smaller on a calm day.
Followed Break-In procedure with 5+ second delays between shots
Ammo Used: Factory Hornady Black 123gr ELD Match
At 100 yards best of 3 five shot groups was 1.04 MOA, after doing all the math the average of all three groups would be equivalent 1.05 MOA 3-Shot group.
After Break-In I tested 10 - 3 shot groups Speer 90 TNT loads 30.8gr-31.7gr of IMR 8208 XBR, COL 2.190, Hornady Brass, Fed AR Match primers, No Crimp, with Lee Dies. All thirty rounds shot with about 1-3 seconds delays. Barrel was allowed to get hot. The best group was 1.04 MOA with the average 1.36 MOA.
The smoothest 6.5 Grendel I have ever shot, the Gas Block came adjusted perfectly, did not have to fine tune at all. The 3 port brake seemed to make the Grendel feel more like a 223 rifle, made it very easy to keep the scope on target for the next shot.
https://www.at3tactical.com/products/at3...-handguard
It has:
a) Faxon Firearms Match Series 20 inch Heavy Fluted Barrel 6.5 Grendel 5R 416R Nitride Nickel Teflon Extension
b) Wojtek Weaponry Adjustable Gas Block
c) Faxon Firearms MUZZLOK 3-Port Brake
Lower: Rock River Arms LAR-15 with RRA TWO STAGE TRIGGER (great trigger can average about .5" groups with RRA .223 WYLDE Match Barrel)
Shot prone from lead sled, not ideal shooting conditions, variable wind gusts about 5-10 mph. Did not try to avoid the wind gusts, groups most likely would be smaller on a calm day.
Followed Break-In procedure with 5+ second delays between shots
Ammo Used: Factory Hornady Black 123gr ELD Match
At 100 yards best of 3 five shot groups was 1.04 MOA, after doing all the math the average of all three groups would be equivalent 1.05 MOA 3-Shot group.
After Break-In I tested 10 - 3 shot groups Speer 90 TNT loads 30.8gr-31.7gr of IMR 8208 XBR, COL 2.190, Hornady Brass, Fed AR Match primers, No Crimp, with Lee Dies. All thirty rounds shot with about 1-3 seconds delays. Barrel was allowed to get hot. The best group was 1.04 MOA with the average 1.36 MOA.
The smoothest 6.5 Grendel I have ever shot, the Gas Block came adjusted perfectly, did not have to fine tune at all. The 3 port brake seemed to make the Grendel feel more like a 223 rifle, made it very easy to keep the scope on target for the next shot.