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Green57 · 01-29-2021, 05:09 AM

gunbugs,

I think you might be on to something with this statment "Abnormally large diameter rims on the cartridge?"

I have a S&W model 1917 that shoots .45 ACP utlizing moon clips. Normally I shot WWB or RGB ammo out of it. Went shooting one day and Wally world was out of the normal ammo so I bought some Blazer brass.

It was noticablly harder to snap this ammo into the moon clips, to the point that I decided it was not worth the effort. The only reason I could think of that would make the Blaser harder to load into the clips was if the extractor groove diameter was at the upper limits. It did shot fine through my Colt WWI reissue though.

I wonder if the Blazer 9mm cases are manufactured towards the upper limits like their .45 is? Might be worth breaking out the calipers to measure the groove and rim diameters on the case to find out if this could have been a contributing factor to the BB failure.

G57

01-29-2021, 05:09 AM	#59
Green57 User Join Date: Jan 2006 Posts: 32 Thanks: 0 Thanked 3 Times in 3 Posts	gunbugs, I think you might be on to something with this statment "Abnormally large diameter rims on the cartridge?" I have a S&W model 1917 that shoots .45 ACP utlizing moon clips. Normally I shot WWB or RGB ammo out of it. Went shooting one day and Wally world was out of the normal ammo so I bought some Blazer brass. It was noticablly harder to snap this ammo into the moon clips, to the point that I decided it was not worth the effort. The only reason I could think of that would make the Blaser harder to load into the clips was if the extractor groove diameter was at the upper limits. It did shot fine through my Colt WWI reissue though. I wonder if the Blazer 9mm cases are manufactured towards the upper limits like their .45 is? Might be worth breaking out the calipers to measure the groove and rim diameters on the case to find out if this could have been a contributing factor to the BB failure. G57