The nosler manual v7 for a 150 grn projectile in 284 has 51 grns of n550 as giving the highest velocity of all loads.
Being a bit faster burning than n560, that might work well in your shorter barrel Hori?
The nosler manual v7 for a 150 grn projectile in 284 has 51 grns of n550 as giving the highest velocity of all loads.
Being a bit faster burning than n560, that might work well in your shorter barrel Hori?
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