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Reloader 17 in the .257 Ackley, 2 bullet weights

Re: Reloader 17 in the .257 Ackley, 2 bullet weights

Is your twist 1:10"?

RL17 should work pretty well. My .257 loves H4350 with both of your listed bullet weights as well as 100grs. However, the 87 and 100gr it prefers are Sierra.
 
Re: Reloader 17 in the .257 Ackley, 2 bullet weights

Go with RL 19 I shoot a .257AI with a 85gr Nosler ballastic tip
with a 27" barrel with 56.5gr and get 3600fps..
look here accuratereloading.com