6mm Comp Match from 260 brass

[rimfiremac]

Howdy,

Just wondering if anyone has run into issues forming 6 Comp Match brass from 260 brass?

I can see neck thickness being a challenge, and could plan to turn necks to 11 thou before reducing, but other than that, anything else to watch for?

 

[ncboiler]

I formed 200 pieces of Alpha 260 brass. No issues during fire forming. I haven't prepped them for the 2nd loading yet.

 

[rimfiremac]

Did you do any neck turning prior to necking down?

 

[ncboiler]

Did you do any neck turning prior to necking down?

I did not. I am neck turning after I have formed. I turn to just below the neck junction hoping that will help with any possible donut issues down the road.

 

[rimfiremac]

Excellent to hear, thank you!

 

[mgunderson]

Working on an SLR with lapua brass. Neck turned after sizing. Would recommend a two step neck turn with annealing in between steps.