[Hoser]

Using 223 or 5.56 brass is fine for just about all the chambers out there. Some really old SSK chambers are on the tight side with regards to neck thickness.

I have used 221 brass in the past and it works just fine, but is kind of a pain and isnt worth the expense. In fact I still have 200 pcs of virgin brass sitting on the shelf that I made for a member here just like he asked me to. Then stiffed me.

I use all flavors of brass and have had nothing but good results. Everything from Lake City to Lapua. Commercial Federal is my least favorite, but it does work. I run Lake City or mixed brass in my semi (soon to be full) and Lapua in my bolt gun.

I am using a PRI adjustable gas block on my 9.0 Noveske. I dont shoot supersonics, but being able to is a nice option.

For gunsmithing/building, get in touch with Spook who is a member here.