Cycling 58g bullets

[Dino11]

Try lightening the buffer some more by replacing the steel weights with aluminum ones. I made my own from some 1/2" aluminum bar stock I got at the hardware store. I lightened a rifle buffer and used a 10% reduced power RE spring and had to almost close my gas block off. It is barely open and the  the rifle is a very soft shooter that only throws the brass a couple feet away from the bench. My gas port on that rifle is .101, it is rather large but it is a  rifle +2" on an 18" barrel, not much real estate between the gas port and the muzzle. And the rifle runs a lot cleaner having almost no gasses going to the BCG and the bolt stays locked longer.

What weight  did your rifle buffer end up at? And as you reduce power Spring a wolf one?

Yes it was a Wolff spring and I replaced 4 of the 5 steel weights with aluminum and reduced it from 5.4 down to 3.8 oz. It cost me about $5 and about a 1/2 hour of time to modify it.