ORIGINAL: handloader1
If I cannot get Winchester 760 to group, I will spring for a different powder. I will not let a 11 year old kid on his first mule deer hunt to go out with unsatisfactory rounds. Good luck.
handloader1
I've got a Rem 700 Mtn LSS w 22" barrel and using H414 I'm getting 3/4" groups @ 100Yds with the Hornady 139 gr. SPs. I've also tested some 140 Sierra Game Kings on top of Varget and getting 1/2" groups with that combo. Varget has also produced 1/2"-3/4" groups with 140Grn Accubonds.
Who knows if his gun will like it, but Varget would probably be a good one to try in addition to the powders you already have.
firstshot
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Make your first shot count!