An interesting discussion came up among my historic arms enthusiast friends the other day which I thought I'd ask your input on as well - especially given how (oddly) slow this sub-forum is - namely, which cartridge are the civilian Webley Mk IV .38 revolvers sighted for?

We were trying to work out was whether the civilian models were sighted for the 145gr "standard" .38 S&W cartridge, the 200gr .38/200 round or whether they were chambered for the .380 Revolver Mk IIz cartridge with its 178gr FMJ projectile.

It would seem logical the "War Finish" models were sighted for the .380 Revolver Mk IIz round, but I don't know if the cartridge was ever available for sale to the public, unlike the 145gr .38 S&W rounds which continue to be made until the present day.

Does anyone have any thoughts or insights on the matter?
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