Question about chamber shoulder

[SkiUpHill]

I recently was cleaning my 300 WSM and noticed that the rubber bushings on the end of my Dewey guide were smashed and when I was pushing my brush through the guide the aluminum part of the guide was hitting the shoulder of the chamber... big drag and I freaked a bit. I don't think I did any real damage because the end of the guide was smooth and the finish was still in tact. I think if I would have done lots of damage to the shoulder the end of the guide would have been damaged first being aluminum. Of course the freak part of me thought I may have slightly scratched the shoulder. Do you guys think this is much of a problem? Please advise. Thanks,

 

[MagnumManiac]

Aluminium won’t damage barrel steel, BUT it does stick and can cause issues with your brass if it has.

I doubt you have damaged anything, but a good look down the chamber end should be made with a bore scope. Most GS can look for you with little cash outlay.

Cheers.

 

[SkiUpHill]

Aluminium won’t damage barrel steel, BUT it does stick and can cause issues with your brass if it has.

I doubt you have damaged anything, but a good look down the chamber end should be made with a bore scope. Most GS can look for you with little cash outlay.

Cheers.

Good to hear Thanks, I Know a guy who can help me out with that.