Quote Originally Posted by Newbe View Post
I'm also fighting this with my V11 .223

I've modified the firing pin a little (flattened the tip a bit) and though it has helped, there is still some flashing around the firing pin indentation on the primer.

I'm on the fence as whether to pursue the pin modification, or get a PT&G bolt head. I hadn't heard of the headspace changing till reading this, but it makes sense I guess.

Original my 11 hunter cratered and occasionally pierced every load.
Now its GTG with the PTG bolt head.

What primer?
CCI400?