Thread: I've got my eye on a Churchill.
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Unread 08-22-2025, 07:17 AM   #9
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Drew Hause
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Winchester Proof Steel (AISI 4140 or possibly AISI 4340) was introduced in 1931 for the Model 21 and in 1932 for the Model 12.
I would use 6 or smaller steel. I wouldn't use large steel shot. Other opinions will vary.
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