Converted .455/.45ACP

[nbedford]

Per Hatcher - Webley bullet diameter = .457, Colt 45 = .454, and 45ACP = .4515. A 455 conversion to 45 Colt or 45 ACP might not be very accurate either, unless you slug the bore. Hatcher published in 1937 so my figures may not be accurate either.

 

[racoonbeast]

I have heard this warning repeatedly about shooting .45 ACP in the converted .455 Webley break tops. It is said that the .45 ACP is exactly equal to the proof load used to proof these guns. Apparently they are not heat treated, or something similar.

I have never heard this about any of the old Smiths. Is there a possibility that you might be confusing this info between the two guns?

 

[Hondo44]

Cartridge conversions of the .455 revolvers w/o changing the barrel usually give surprising accuracy.

Of course attaining their full potential for great accuracy is accomplished with hand loaded ammo using bullets sized as close as possible to the .455 barrel specs, that are not too hard.

 

[Hondo44]

I have heard this warning repeatedly about shooting .45 ACP in the converted .455 Webley break tops. It is said that the .45 ACP is exactly equal to the proof load used to proof these guns. Apparently they are not heat treated, or something similar.

I have never heard this about any of the old Smiths. Is there a possibility that you might be confusing this info between the two guns?

The warning applies to both the Webley Break top and the S&W. However the Webley is a much greater candidate for breakage with an even moderate amount of shooting with ACP.

 

[steelslaver]

I have a nice 45acp cylinder in my parts pile and 2 45 colt cylinders cut for 45acp in full moon clips that are the short variety, not the 25-5 and later length. I replace them with the longer variety in my guns. $75 your choice. I am not going to use them anymore.