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<blockquote data-quote="PrairieGhost" data-source="post: 92339" data-attributes="member: 704">That's a tough question.&nbsp; My friend built his own rifle, so he also had to do his own proof testing.&nbsp; That's normally double lead and double powder.&nbsp; Check your owners manual and call the manufacturer.&nbsp; My 50 cal in the past I shot a 370 gr Maxiball, and a 440 gr from another manufacturer, and even a 480 gr conical, and with up to 120 gr. of powder.&nbsp; In my 12 gauge I shot 2 1/2 ounches of shot with 80 gr powder.&nbsp; It should be perfectly safe to shoot equal to that 480 gr with 70 gr powder.&nbsp; That is more than an ounce of shot.&nbsp; I think I would try 400 gr of shot with 70 gr powder.&nbsp; Start with 200 gr lead and 70 gr powder and work up&nbsp; to a heavier shot load but not powder.&nbsp; 400 gr lead and 70 gr powder should put you in the 1100 fps range.&nbsp; Pattern it as you work up your load.&nbsp; You should be able to make it affective to 25 yards.Edit:&nbsp; There is 7000 gr in a pound.&nbsp; There is 437.5 gr in an ounce.</blockquote>

[QUOTE="PrairieGhost, post: 92339, member: 704"] That's a tough question. My friend built his own rifle, so he also had to do his own proof testing. That's normally double lead and double powder. Check your owners manual and call the manufacturer. My 50 cal in the past I shot a 370 gr Maxiball, and a 440 gr from another manufacturer, and even a 480 gr conical, and with up to 120 gr. of powder. In my 12 gauge I shot 2 1/2 ounches of shot with 80 gr powder. It should be perfectly safe to shoot equal to that 480 gr with 70 gr powder. That is more than an ounce of shot. I think I would try 400 gr of shot with 70 gr powder. Start with 200 gr lead and 70 gr powder and work up to a heavier shot load but not powder. 400 gr lead and 70 gr powder should put you in the 1100 fps range. Pattern it as you work up your load. You should be able to make it affective to 25 yards. Edit: There is 7000 gr in a pound. There is 437.5 gr in an ounce. [/QUOTE]

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