Originally Posted by
orkan
Been there done that.
Basically, compute for 15-25fps per inch of barrel loss. Yet some barrels shoot fast, others slow.
Expect 2500-2575fps from an 18"
Expect 2525-2600fps from a 20"
This, given a stout load of varget and a 175SMK.
Does the Hornsbys improve your grouping?
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