I just decided to contribute some load data that I’ve been working. I don’t need full power 30-30 for my particular local needs. Subsonic rounds don’t travel as far, are easier on my ears, are plenty lethal for my 40-100 yard open shots on my land. Please, I don’t want this to tun into a “not enough knock down power…that’s inhumane to hunt with” discussion. I just want to share my data for those of you who may have wanted information on such a cartridge load.
Rifle – Savage 340E (1:12 twist, 22" barrel) with Bushnell Sportview 4-12x40 (Japan)
Chrono – Oehler 35P set at 10 feet
Powder – new stock Alliant Red Dot
Primers – Winchester WLR Large Standard Rifle
Brass – mixed
Bullets – Missouri Bullet Co. 165gr .311 #4 Whitetail (with no gas check)
and Hunter’s Supply (RCBS 180?) 193gr .311 GCFP (with no gas check)
Reloading equipment – all Lee dies, Lee Factory Crimp, manual Redding scale
Minimum shots fired - 10
Here’s my bottom-line subsonic results:
For 165gr with 5.5 grains Red Dot (estimated BC=0.235):
Highest recorded velocity: 1106 fps
Lowest recorded velocity: 1085 fps
Extreme velocity spread: 21 fps
Mean or Average velocity: 1095 fps
Standard Deviation: 8 fps
For 193gr with 6.1 grains Red Dot (estimated BC=0.255):
Highest recorded velocity: 1110 fps
Lowest recorded velocity: 1087 fps
Extreme velocity spread: 23 fps
Mean or Average velocity: 1099 fps
Standard Deviation: 7 fps
Hope this is useful to some of you.
Semper fi.