Hello all.
I need a bit of advice on how to proceed with the load I'm developing for my 308 Win Remington XCR comp tact. 1-12 twist 20 inch barrel.
My last trip to the range I did 5 different 5 round loads with Remington brass, 185gn Lapua Scenars and Norma 203B ranging from 44,4gn-45,2gn. OAL was max AI mag lenght and it was shot at 300m.
Chrono numbers were as follows:
44,4gn:
Max 2486.
Min 2482.
Avg. 2483.
SD: 1.
I don't have a Picture of the Group only the coordinates, since it didnt want to print outside the 10 ring. I can post them if needed.
44,6gn:
Max 2500.
Min 2478.
Avg. 2489.
SD: 7.
44,8gn:
Max 2526.
Min 2250.
Avg. 22513.
SD: 10.
45gn
Max 2549.
Min 2530.
Avg. 2539.
SD: 7.
45,2gn:
Max 2557.
Min 2536.
Avg. 2546.
SD: 14.
This Group was only 2 shots.
The first one looks like the best in terms of consistency, but isn't the velocity somewhat low for that bullet? Also the second Group is almost the same velocity as the first, which is kind of odd? I'm not sure where to proceed from here and would like some advice if possible. I could always do some 10 shot groups, but I don't wanna just waste 30-40 projectiles, since I'm not really seeing a pattern here
Any help is appreciated.
I need a bit of advice on how to proceed with the load I'm developing for my 308 Win Remington XCR comp tact. 1-12 twist 20 inch barrel.
My last trip to the range I did 5 different 5 round loads with Remington brass, 185gn Lapua Scenars and Norma 203B ranging from 44,4gn-45,2gn. OAL was max AI mag lenght and it was shot at 300m.
Chrono numbers were as follows:
44,4gn:
Max 2486.
Min 2482.
Avg. 2483.
SD: 1.
I don't have a Picture of the Group only the coordinates, since it didnt want to print outside the 10 ring. I can post them if needed.
44,6gn:
Max 2500.
Min 2478.
Avg. 2489.
SD: 7.
44,8gn:
Max 2526.
Min 2250.
Avg. 22513.
SD: 10.
45gn
Max 2549.
Min 2530.
Avg. 2539.
SD: 7.
45,2gn:
Max 2557.
Min 2536.
Avg. 2546.
SD: 14.
This Group was only 2 shots.
The first one looks like the best in terms of consistency, but isn't the velocity somewhat low for that bullet? Also the second Group is almost the same velocity as the first, which is kind of odd? I'm not sure where to proceed from here and would like some advice if possible. I could always do some 10 shot groups, but I don't wanna just waste 30-40 projectiles, since I'm not really seeing a pattern here
Any help is appreciated.
