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Jim Watson · January 31, 2021, 11:18 AM

I have been reading about those "bored through" 1917s for a long long time but have not seen a gun or picture of an actual example. Did they have a cylinder replacement/upgrade program?

I never heard of a .45 Colt being "bored through."

Failure of .45 Colt to extract is why the FA 1909 ammo for the New Service had larger rim diameter. It is commonly said that it will not work in a SAA except by loading every other chamber. If that is so, How did they ever make a SAA in .455? I read an account in The Handgunner, Ltd. but it sure sounded odd.

January 31, 2021, 11:18 AM	#6
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,543	I have been reading about those "bored through" 1917s for a long long time but have not seen a gun or picture of an actual example. Did they have a cylinder replacement/upgrade program? I never heard of a .45 Colt being "bored through." Failure of .45 Colt to extract is why the FA 1909 ammo for the New Service had larger rim diameter. It is commonly said that it will not work in a SAA except by loading every other chamber. If that is so, How did they ever make a SAA in .455? I read an account in The Handgunner, Ltd. but it sure sounded odd.