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383sbc
03-22-2011, 02:13 AM
what is the best jump from the lands for the 123 amex. 24 " shillen barrel
GrantMan
03-22-2011, 02:42 AM
I just load them up to mag length and find a powder combo from there. They seem to work well in the Grendel, minimal load development. AA2520 is the powder I use for the 123 AMAX
m118lr
03-23-2011, 03:18 AM
I just load them up to mag length and find a powder combo from there.

That is what I try to do.