243AI Start loads?

[bootsmcguire]

I am just getting ready to load the first batch of 243AI loads in my freshly formed brass. Been doing a little reading and have read several places that you can us near max loads for the regular 243 as a safe start load for the 243AI due to the increased volume of the AI. Thoughts? Suggestions?

I am planning on starting with 58gr V-max and RL15 or RL19 or Varget. I have data for the standard 243 in all powders, I am leaning towards RL15 or Varget. Thoughts?

[Joe O]

You're right.Start slightly above what you used to fireform the brass,assuming you used the max load listed to fireform.It won't take much,to get the accuracy on a given load.With a Sie 95gr Match King in a 1:9 twist I had(so far) my best 5 shot group(.221), with 46.5gr of H4831sc OAL 2.770.

[bootsmcguire]

Thats what I thought, the first batch of formed brass was the factory stuff I had lying around. Thanks, just wnated to check with someone else before I started.

[bobcat30]

Or one can use 6mm rem data the h20 capacity is the same so i have heard.