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Good to hear! So if you heat treat what BHN do you end up at?
As a new guy casting, should I depend upon tin for making pour easier? Just trying to figure it out.....
Also, my 10mm 180 XTP loads in G20 are 1180fps; Carbine is 1500fps.
THANKS FOR INPUT ALL!
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Tin is not needed, good mould venting is. Unknown BHN, just hard enough to be accurate.
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If expansion is your goal, a lead/antimony only alloy is a disaster waiting to happen. Way too brittle. I really doubt you would see any expansion with popper's stated alloy though.
Tin makes casting so much more forgiving, and toughens up the bullet dramatically. I'd use none, or minimal tin for target bullets, but why worry about 1/2 cent worth of tin on a hunting bullet?
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My 'hog' load is 170gr RD style PB PC HT ~ 3% Sb for 300BO pistol. Was running 900 fps or so but recently upped it to 1400 or so. Got a 150gr GC PC version for longer range or I could bring out the 308W for 200 or longer.