CCI 400 primers

[Hardwoodmaterials]

I just started reloading for a few AR15 rifles (223, 6.5 Grendel, 450 Bushmaster) I have only reloaded ammo that uses large rifle and large rifle magnum primers. The only SRP's I have seen on the shelf is the CCI 400's so I picked up a brick of them. I figured the standard SRP's were all roughly the same like the LRP's but after getting pulled in to the rabbit hole online it appears the small rifle are all over the place and I can't find a definitive answer on if I can use the CCI 400 in AR style rifles or not? Anyone here use them?

 

[mr.big]

By the thousands

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[KPH]

By the thousands

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me too

 

[ROVERBOY]

I used to load and shoot a lot of them. CCI400, CCIBR4, Rem. 7 1/2.

 

[Hardwoodmaterials]

That's about what I figured! Thanks

 

[EastTNHunter]

Yep.