looking for 270 improved loads

[pjracer]

aquired a .270 ackley improved with 24" douglass barrel. loading info would be appreciated. have rl 22, h4831, imr 4831,imr 4350, h1000 on hand. should I use magnum primers since increased powder charge?

 

[Big Jake Duke]

I realize this is an aged thread, i was hoping you would have some info now that I can explore.

 

[Trickymissfit]

aquired a .270 ackley improved with 24" douglass barrel. loading info would be appreciated. have rl 22, h4831, imr 4831,imr 4350, h1000 on hand. should I use magnum primers since increased powder charge?

130gr. bullet
59gr. / 4350 @ 3200
60gr. / 4831 @ 3080
65gr. / 4831 @ 3390

150gr. bullet
56gr. / 4350 @ 2950
58gr. / 4350 @ 3030
62gr. / 4831 @ 3150

all powders are from IMR, and most are max loads. Ackley says there is little improvment in velocity to be gained as the case is already overbore.
gary

 

[Big Jake Duke]

looking at the numbers you have posted it appears that the 270 Ackley will have an increase in velocity of a little over 9% on the 130 gr from accepted levels (Normal max 3100fps) and just under 9% for the 150's. (Normal max 2900fps.)

Thanks for the info.