Has anyone worked up an accurate load for the 105 A max in the 243? Which powder worked best for you? What was your best load?

I tried a lot of powders. My twist was factory, and hence, too slow.

My twist is 1 in 9.25". I hope its sufficient. I'm getting decent groups with my initial trial of H1000 at the 100 yard mark. We'll see how well they stabilize at longer ranges when I finalize my load. Has anyone tried h4831 or 4350?

elkhunter

The powder you're using is a good choice along with IMR7828 and RL22 for the A-Max. I like 40.0 gr of IMR4350.

Retumbo From 46.0 grains to 49.0 grains
Remington 9-1/2 Primer