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40 SDM


cardboardkiller

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A normal 40 case and a 40 "Super Duper Magnum" as a friend called it. I was tweaking my new 650 when I ran out of cases and found the case on the right stuck in the feed tube. Both cases are brand new Starline. The SDM case is about .4" longer than the left one. I thought it was a 41 mag when I first saw it. The case is headstamped as a 40.

I measured it again and it comes out to 1.284".

Starline says their 10mm Mag is between 1.242" - 1.248".

Their 40 is 0.842" - 0.847".

Their 10mm runs 0.984" - 0.991".

33ju80p.jpg

Edited by cardboardkiller
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It has a complete 40 headstamp. I'm not worried about it, just thought it was odd/cool. I've used no telling how many rounds of Starline brass (and others) and never came across an XL version of anything.

Edited by cardboardkiller
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