Starting load for .50CAL GPR 1 IN 24 TWIST.

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I need your good advise for a place to start getting this rifle up and running. The rifle in question is shown with my trusty old .54 cal CVA BIG BORE . THE LEAD I'll be using is shown in the other photo. Any help is appreciated.
 

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I need your good advise for a place to start getting this rifle up and running. The rifle in question is shown with my trusty old .54 cal CVA BIG BORE . THE LEAD I'll be using is shown in the other photo. Any help is appreciated.
I would suggest starting with 50 grains of the blackpowder of your choice, increasing the charge maybe 5 or 10 grains at a time until accuracy started to degrade, or you found the recoil knocked all the fun out of shooting the gun. Whatever comes first. Then back off 5 or 10 grains and call it a hunting load. Somewhere along the way you should have found your conical target load, though for a paper punching target load, I would consider trying a patched roundball.
 
Joined
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Mesa,Az
I would suggest starting with 50 grains of the blackpowder of your choice, increasing the charge maybe 5 or 10 grains at a time until accuracy started to degrade, or you found the recoil knocked all the fun out of shooting the gun. Whatever comes first. Then back off 5 or 10 grains and call it a hunting load. Somewhere along the way you should have found your conical target load, though for a paper punching target load, I would consider trying a patched roundball.
Thanks , I will do as you suggested. I wasn't sure round balls would work well in the 24 -1 twist . I have 2,3 and 4 f powder so I should be able to work out something. Thanks again for your reply.
 
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