Harv6
Beginner
- Feb 9, 2015
- 68
- 1
Ive got an 18" bolt action 30-06 that is light, balances nicely, and seems like it'd make a great woods rifle. In reading through different forums to see what I could expect from a short barreled 30-06, I found a lot of people were turned off by the amount of muzzle blast.
So i went on QuickLoad and ran some tests to find that with an 18" barrel and a Speer 165gr BTSP, IMR4227 could get the same ballistics as a topped out 300 Savage in a 24" barrel, but with a little less muzzle blast. Without adjusting anything but barrel length, QL says 40.3 grains of IMR4227 would top me out at 60k psi and 2535 fps. Fill ratio would be 77%. Bump it back 10%-ish for a starting load and it said 35 grains would give me 2300fps and fill ratio of 67%. That still gives me 30-30 power but with a much better BC....wouldnt be bad for the woods.
Also, Ive got about 5 reloading manuals and only one listed IMR4227 w/ a 30-06. And that was the Lyman Cast Bullet book recommending even further reduced loads between 22 and 31 grains using a 195gr cast bullet. I cross checked the numbers from the book with QL to see if they were in the same ballpark and they were.
I went to the range today with just a handful of rounds w/ 35 grains and the 165 BTSP to run them over the chronograph and see where I was. Velocity average was 2375 and accuracy wasnt too bad, but on every round I noticed the slightest hangfire which I've never experienced before. I dont believe it was enough to alter my groups, just barely enough to notice a click/boom instead of a boom. Have any of you run into something similar before? I know I'm not using a popular powder for a 30-06 but I have found a book that uses less powder. Would you add a filler to hold the powder against the primer? Maybe change from a standard primer to a magnum primer? Maybe scrap the idea all together? Or just keep testing increased charges like normal?
So i went on QuickLoad and ran some tests to find that with an 18" barrel and a Speer 165gr BTSP, IMR4227 could get the same ballistics as a topped out 300 Savage in a 24" barrel, but with a little less muzzle blast. Without adjusting anything but barrel length, QL says 40.3 grains of IMR4227 would top me out at 60k psi and 2535 fps. Fill ratio would be 77%. Bump it back 10%-ish for a starting load and it said 35 grains would give me 2300fps and fill ratio of 67%. That still gives me 30-30 power but with a much better BC....wouldnt be bad for the woods.
Also, Ive got about 5 reloading manuals and only one listed IMR4227 w/ a 30-06. And that was the Lyman Cast Bullet book recommending even further reduced loads between 22 and 31 grains using a 195gr cast bullet. I cross checked the numbers from the book with QL to see if they were in the same ballpark and they were.
I went to the range today with just a handful of rounds w/ 35 grains and the 165 BTSP to run them over the chronograph and see where I was. Velocity average was 2375 and accuracy wasnt too bad, but on every round I noticed the slightest hangfire which I've never experienced before. I dont believe it was enough to alter my groups, just barely enough to notice a click/boom instead of a boom. Have any of you run into something similar before? I know I'm not using a popular powder for a 30-06 but I have found a book that uses less powder. Would you add a filler to hold the powder against the primer? Maybe change from a standard primer to a magnum primer? Maybe scrap the idea all together? Or just keep testing increased charges like normal?