For a .50 caliber start at 55 grains. For a .54 caliber start at 60 grains. Shoot 5 shoots and up the charge 5 grains at a time till you see what it likes (smallest group). Then ya start on patch thickness, then patch lube. Then chewing tobacco (I have found the best groups are had while chawing Grizzly long cut wintergreen, you'll wanna shoot with Skoal, Coppenhagen, Redman etc etc). When yer thinking yer done then ya can try different brands of powder and try 2f vs 3f. Some say caps can even make a difference? Remember to make ONLY 1 change at a time or you'll always wonder if the groups tightened cuz you used mink oil instead of MAP or if its cuz you opened a new can of Cope instead of last weeks Skoal. WRITE DOWN THE CHANGES/RESULTS.
Keep us posted. BTW the best load for deer up to 75 yds is anything over 45-50 gr that is your tightest shooting (grouping) load.
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