It looks like a 243 wssm upper is in my near future so what dies do you guys recommended, and if anyone has any tips or tricks for this caliber I would appreciate them.
I have loaded for a bolt gun. I am no reloading expert but IME, this round will show pressure sign abruptly so be careful. I have had good success with IMR4350.
Case life sucks too, I have had case splits in the bottleneck portion in new cases. Maybe a bad batch I don't now.
I have an Oly upper with Krieger barrel on it. App. 1000 rounds thru it.
5 or 6 mags that work.
Dies.
What's left of 1000 annealed Winchester cases.
If interested in purchasing, pm me.