Them cast boolits won't shoot accurately and will lead the hell out of your barrel. You shouldn't use them. Send all of your alloy to me and I'll get rid of that toxicc asset for you.
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Selmer
"Daddy, can you sometime maybe please go shoot a water buffalo so we can have that for supper? Please? And can I come along? Does it taste like deer?" - my 3-year old daughter
yea, you'd still be amazed what I hear in that respect.
I had a guy at the hunt club tell me I can't shoot cast lead out of my rifle at 2400fps without having to 'scrub' the barrel afterwards.
I offered to let him shoot my gun but on the condition he had to shoot it 50 times and then check for leading. He declined. I suppose he didn't want to go through 50rnds of kick you on your butt ammo out of my 7lb 35 whelen with full house loads.
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Whatever you are willing to put up with, is exactly what you will have.
When your ship comes in. ... make sure you are willing to unload it.