7mag 150 AB 4451

[gr8hntr]

I have searched the net and can't find anyone that is shooting the 150 gn AB and the new imr 4451 powder . I found someone that is shootin the NP 150 start load was like 55 to max of 60 gn . I didn't know if that data would swap over so I figured I better ask to be safe .
Thanks
Butch

 

[MAinAR]

I have searched the net and can't find anyone that is shooting the 150 gn AB and the new imr 4451 powder . I found someone that is shootin the NP 150 start load was like 55 to max of 60 gn . I didn't know if that data would swap over so I figured I better ask to be safe .
Thanks
Butch

Basically yes data is interchangeable for the NP, BT and AB ( but you still have to work up loads like always ). Hodgdon list max load with 150NP at 60.7 of IMR 4451 at 3045 fps from 24" barrel.

IMHO you'd be better served with IMR 4955 or 7977. Have found most 7RM's to shoot best at case full top end loads.

http://www.hodgdonreloading.com/data/rifle

 

[gr8hntr]

Thanks for the help