Barely related
My uncle was in CF in WW2; armoured.
He once said that he would take 9mm ammo which was plentiful and "bugger up the rim" with a pair of pliers and the 9mm rounds would stay in place in either an Enfield or Smith, and they would shoot for fun when time was available.
British and Canadians investigated use of 9mm in Enfield and S&W and found that the chambers bulged. the 9mm ctg has 60% more pressure than the .380".