.223 reloading....have I made a bad mistake?

If you have plenty on hand that are within specs. (1.760-1.730"), then I would put them to the side, they can still be trimmed down and reformed for 300 Blk.

Edited my mistaken specs.

Confirm you have enough neck tension to keep the bullet from moving, if so should not be a problem.

Use them in a bolt action. If you don’t have one, then this would be a good reason to buy one!

saami spec is 1.760" minus .30" according to their site. At 1.725" I wouldn't have any qualms reloading them.

Otto said:

saami spec is 1.760" minus .30" according to their site. At 1.725" I wouldn't have any qualms reloading them.

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You're correct, I was mistaken. I had a +0/-.020 in my head.

Mike L. said:

Discovered that I trimmed some cases to 1.725" instead of the correct trim-to-length of 1.750"

Should I scrap them or will I be ok? Loading moderate 55 grain loads for AR.

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No problem at all. Load them and shoot them. If you reload 223/5.56 brass long enough you will find factory brass that is as short as 1.745 and they have been shot out of a gun without any issues.

If you are going for precision loads then keep them separate but for range plinking, blasting away they will work fine.

I'd be OK loading them, my only caution would be if you intend to crimp... those shorter cases may have to be set aside and crimped separately after a small readjustment of the crimp die.