11Bravo
01-02-10, 20:46
Looking for MVs that people have actually gotten with a chrono.
Either 55 grain or 62.
Want to get an idea of the average of actual measured velocities for purpose of a ballistics table.
Manufacturers list velocities but rarely list the barrel length.
They also likely chrono them on indoor ranges in controlled environments.
I know there is a chart floating around that lists them as 3,132fps for 55gr and 2,928fps for 62gr.
The sample size used was 3 five round groups from 3 rifles with same length barrels.
Just looking for more data to nail it down even more.
I don't care if it was -4 or 104°F.
Don't care if elevation was 3 feet above mean sea level or 7,000 above MSL.
Thanks,
Greg
ETA:Oh yeah, commercial loads only, either 1st run or remaned, no reloads.
Thanks again.
ETA 2:Yeah, I know, the velocities aren't actually muzzle velocities, but you get the point.
Either 55 grain or 62.
Want to get an idea of the average of actual measured velocities for purpose of a ballistics table.
Manufacturers list velocities but rarely list the barrel length.
They also likely chrono them on indoor ranges in controlled environments.
I know there is a chart floating around that lists them as 3,132fps for 55gr and 2,928fps for 62gr.
The sample size used was 3 five round groups from 3 rifles with same length barrels.
Just looking for more data to nail it down even more.
I don't care if it was -4 or 104°F.
Don't care if elevation was 3 feet above mean sea level or 7,000 above MSL.
Thanks,
Greg
ETA:Oh yeah, commercial loads only, either 1st run or remaned, no reloads.
Thanks again.
ETA 2:Yeah, I know, the velocities aren't actually muzzle velocities, but you get the point.