CCI 450 vs Rem. 7 1/2 BR

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I've been using CCI primers all my reloading life. I've stayed away from all other primers...
until now. Shortages are forcing me to try other primers. I've been using Rem. 7 1/2 in
my .223/5.56 recipes. Holy smokes, the Remington's are much easier to use! I can if
I choose, skip the primer pocket uniform step. I still need to cut the crimp out, but
these Remington's slip right in the pocket with the hand primer.

Anybody else notice this slightly smaller primer cup?
 

crossbow5

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Yes, the Remington 7 1/2 do seem to be slightly smaller in diameter than the CCI. I loaded the Remington 7 1/2 primers for years but have used them all and am now loading the Federal AR Match primers.
 

DizzyJ

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I've got a bunch of the Remmy 7 1/2 primers but haven't used them enough to feel there's a difference. Or I should say it's been long enough that I don't recall. I have read where people have in the past went to a different primer that seated more snugly once the pockets loosened up a little.
 

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