Headspacing / can't tighten barrel on enough.

[mnbogboy2]

My first dremel was used mainly for porting race car heads. Some how my son in another state ended up with it. Like a lot of tools my second one usually sits idle for most of the time but sure comes in handy when needed. Also they are not overly spendy.

Some of the older nuts have the remnants of threads showing all the way to the front. These have been relieved to clear the unthreaded shank. If the shank of the replacement barrel is a tad larger than the stock one they still interfere.

Glad you got a new one coming.
Good luck,
Randy

[zloe]

Some of the older nuts have the remnants of threads showing all the way to the front. These have been relieved to clear the unthreaded shank. If the shank of the replacement barrel is a tad larger than the stock one they still interfere.

Randy

I think you've nailed it, threads interfer with the slightly larger "light Varmint" barrel.
I would love a dremel. But I've gotten good with files, angle grinder, etc. just haven't need one. It certainly would have been the best tool for the job many times over at this point ha ha. Someday...