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- Joined
- Jul 28, 2021
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- 7
What do you actually size your 223 cases to?
OK… I’m kind of out in the weeds here. I mostly load 45 ACP and I haven’t loaded for the AR in about 7 months.
I measured my fired cases and they were coming out pretty consistently at 1.461, so with a .004 shoulder bump they come out to be approximately 1.457. But that number seems low. Like, less than SAAMI minimum cartridge low. Which is 1.459.
So I got to thinking… there are literally endless discussions about cartridge headspace online, but no real list or collection of what people are actually sizing their cases to. I mean, there’s really small margins from biggest to smallest so it should be pretty easy to see an average. But I’m just wondering. SAAMI vs. The World I guess. Just informational and maybe a reason for someone to re-examine how their resizing die is set up if they find themselves way outside the average.
My resize: 1.457
Saami chamber: 1.463 min / 1.473 max
Saami cartridge: 1.459 min / 1.466 max
OK… I’m kind of out in the weeds here. I mostly load 45 ACP and I haven’t loaded for the AR in about 7 months.
I measured my fired cases and they were coming out pretty consistently at 1.461, so with a .004 shoulder bump they come out to be approximately 1.457. But that number seems low. Like, less than SAAMI minimum cartridge low. Which is 1.459.
So I got to thinking… there are literally endless discussions about cartridge headspace online, but no real list or collection of what people are actually sizing their cases to. I mean, there’s really small margins from biggest to smallest so it should be pretty easy to see an average. But I’m just wondering. SAAMI vs. The World I guess. Just informational and maybe a reason for someone to re-examine how their resizing die is set up if they find themselves way outside the average.
My resize: 1.457
Saami chamber: 1.463 min / 1.473 max
Saami cartridge: 1.459 min / 1.466 max