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Ackley Improved User · February 1, 2005, 07:49 PM

I've loaded as much as 63 grains of IMR4350 with 165 gr. bullets in my 30-06 Ackley Improved - it popped the primer. Too much pressure! So be careful, because at 61 grains of IMR4350 behind a 165 grain bullet in a standard '06, you're running close to primer popping pressures. Your velocity reflects this pressure as well - check out the NECO internal ballistic program.

I'd suggest going to a slower burning powder, like R22 or R25. You'll get the same velocity with less pressure, although you'll need to tap in the powder and compress it.

Published loads in all the manuals are very conservative because of product liability issues. The manufacturers must be careful of law suits, because there are many old and/or poorly manufactured guns in 30-06.

I would recommend pushing the envelop only in modern bolt action guns from first-rate manufacturers or gunsmiths.

February 1, 2005, 07:49 PM	#2
Ackley Improved User Member Join Date: January 31, 2005 Posts: 56	Hot loads I've loaded as much as 63 grains of IMR4350 with 165 gr. bullets in my 30-06 Ackley Improved - it popped the primer. Too much pressure! So be careful, because at 61 grains of IMR4350 behind a 165 grain bullet in a standard '06, you're running close to primer popping pressures. Your velocity reflects this pressure as well - check out the NECO internal ballistic program. I'd suggest going to a slower burning powder, like R22 or R25. You'll get the same velocity with less pressure, although you'll need to tap in the powder and compress it. Published loads in all the manuals are very conservative because of product liability issues. The manufacturers must be careful of law suits, because there are many old and/or poorly manufactured guns in 30-06. I would recommend pushing the envelop only in modern bolt action guns from first-rate manufacturers or gunsmiths.