Started this a long time ago and just recently got interested in trying to finish it. Started from scratch with round stock I had laying around and a Marlin 880 barrel in 22lr. Still got a couple metalworking issues to work out and a lot of wood to shape up.
7mag, proud to be a member of MetalworkingFun Forum since Nov 2013.
One word of advice: The bases of rimfire cartridges have been known to perforate with a firing pin, which results in hot gasses coming out the back and into your eye. An easy solution is to O-ring the firing pin, so if that happens, the gases will be arrested before they can ruin your day.