Thread: Ruger Ranch 300BLK

Good point 7mmsaum, and based on the other symptoms of sticking bolt after fired etc... Always good to check headspacing on a new rifle and compare to ammunition to be fired specs.

The only reason I went down the road of the bur being some swath was what was written above in @specweapon s earlier observation.

Originally Posted by specweapon

looking up the magwell I can clearly see a large burr or something in the chamber.
I know the gunsmith never removed the barrel when it was shortened because he told me he just clamped the action in his lathe.

Hence I was going down the road of either (swarf) or foreign matter from the barrel shortening and re-threading he did in the chamber catching on the exterior of shell and line being scored into the case as the bolt head turns to be locked. But definitely specweapon check your headspacing as well in case too!!