I have shot handmade bismuth 1 1\8oz 12ga for 20 years. It kills ducks and is very kind to my old guns. Very little recoil to damage the wood. I bought a case of TM but at 1300fps I bet the pressure is quite high. I only use the TM in my Super Fox. I plan to stay with bismuth as it works for me on decoying birds out to 35-40 yards.
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