Post by nivlac1960 on Jan 15, 2018 18:12:57 GMT -5
Has anyone here ran into this issue while shooting a Ruger American Ranch rifle. My buddy contacted Ruger today to find out why the soot was on the fired factory case. The Ruger rep told him that the soot was caused from an oversized chamber. He suggested that my buddy send in his rifle along with a spent factory case to see if they need to replace the barrel. Has anyone here heard of this before this post? I'm getting soot along the sides of my factory brass in my Ruger also. Just wondering if it's a widespread problem or just a few oversized chambers.
I don't shoot that cartridge but in bolt guns that are cut big (neck in particular) or with ammo excessively sized, you'll get carbon fouling on the neck and/or shoulder. With gas guns that don't have enough dwell time, the early unlocking will cause cases to be filthy. Proper gassing combined with proper BCG weight and spring will give you clean cases.
I'd call and get an RMA so it can be inspected. In most factory guns you'll get carbon fouled necks but if you are getting filthy cases I'd suspect an over-sized chamber.
The straight walled .450 Bushmaster case I believe head spaces off the case mouth itself. In bolt rifles, resizing them continues to complicate the "soot" or carbon. Although some may be dirtier than others, I've yet to not see at least some dirty cases from rifles, including my custom. I've had shooters who didn't reload send me their spent cases, I've purchased or traded for some. I've yet to receive totally clean fired cases and tumble them all.