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SDB for 9mm major


Bubing10

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I've reloaded many tens of thousands of 9mm Major rounds on my

SDB's (2). :closedeyes:

There is an issue to be aware of - it does a great job, except in sizing

the case - it has a tendency to NOT size the case enough to prevent

bullet setback.

Few years ago, I heard about this, and tested it with my rounds - found

that when I reload to 1.165", I was getting some bullet setback with

a 124 gr MG JHP bullet.

I decided it was not serious enough to address (buy a 550 and special

sizing dies that do a better job sizing the brass), and have NOT had

a problem with the bullet setback issue, to date.

But, that is a potential problem (NOT crimping) - it's the sizing die

that creates the grip on the bullet, not the crimp in semi-auto cartridges.

:cheers:

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I was just mulling over getting another SDB so I didn't have to change tool heads so often. Then I considered how much I shoot. 300 45 and 150 40 (more if there is a match that week) means I spend an awful lot of time reloading. So now I'm thinking a 650XL would make more sense. The doubled throughput would mean a lot less time spent reloading. I'm leaning towards that now, especially since I am getting into Open this year. I may even get a Mr Bullet Feeder for it to speed things up even more.

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