300BLK How Important is Annealing?

[Jerzsubbie]

Ive gotten a couple great deals on once fired, converted brass but it’s not annealed. How important is it to anneal your 300BLK Brass?

If it matters, I’m mostly loading probably 80% 147gr supers and 20% 208gr subs, no cast/plated.

 

[Catfish]

I’m getting about 3 firings from my converted cases before I start seeing micro-cracks at the shoulder. I don't anneal I just make more.

 

[GymB]

I don’t know, I’ve annealed all mine but haven’t shot the first 1000 yet, slow going with a single shot. Anyway, can’t comment on how they’ll last.

 

[Sasquatch]

I'm annealing all mine- just because I have an annealer. I didn't lose many to cracking before. Not using plated/coated should help the life if you're not belling the mouth.