how often do you trim .223?

Question

I am not going to measure my groups with a caliper

Answer 1

You mean trim cases for loading?

If you're not concerned about hitting a dime you left on the 200 yard line, you shouldn't worry about trimming too much, maybe three or four rounds through a case before you trim it.

On the other hand, I do all my loading one at a time by hand, and trim the cases every single time. It won't really shorten case life, since it'll stretch every time you shoot, but having a consistent case length will improve accuracy and consistency in any AR or bolt gun, especially when you're not crimping your rounds.

Answer 2

this depends on what firearm you use, and what loads. Each time you fire the round, the case expands. With a new firearm, I generally check case length at first time, second time and third time fired. Then I get a good idea of how much the case length is going to expand with repeated firings. This gives me afair estimate of how often I need to trim the case. On average? 3-4 times fired needs to be trimmed ( In my AR)

Answer 3

not even ... lol