32-20 MV measurements
Posted: Tue Aug 22, 2023 12:06 pm
Last weekend I Finally decided to get out the chrono to do some velocity measurements on the 32-20 - which actually hasa fast-twist 1 in 12" .308 barrel.
To say that I was surprised is an understatement...
Results as follows, and an avergade over 5+ shots (most times 10)
- 151gr RN with 18.4 grs 1 1/2Fg Swiss gave me an average of 1220 fps
- 171gr 308403 Pope in front of 17.9 grs of same - which I presumed to be close to subsonic - did on average 1465 fps! I 1st thought this was an error, but subsequent shots confirmed the MV.
Quite unexpected...
To say that I was surprised is an understatement...
Results as follows, and an avergade over 5+ shots (most times 10)
- 151gr RN with 18.4 grs 1 1/2Fg Swiss gave me an average of 1220 fps
- 171gr 308403 Pope in front of 17.9 grs of same - which I presumed to be close to subsonic - did on average 1465 fps! I 1st thought this was an error, but subsequent shots confirmed the MV.
Quite unexpected...