it is not supposed to work I know but I shot 5 rounds from the CZ 527 Carbine with 12 twist 18 inch barrel,,5 shots were just under one inch and all holes looked round and no signs of key holing,

anybody ever tried this ?? you think it was a fluke or will some 12`s actually shoot the 69SMK,

load was with LC brass CCI 400 primers and 25 grs Varget and the 69 Sierra bullet..
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gun junky