It is a Jim Chamber kit of a Virginia rifle. Put together by Steve Zihn. I am shooting 90 grains of 3f goex and cast 320 ball, patched with ticking. I shot her the other day after the end of early muzzle season. Put two shots within an inch of each other on the bulls nose. I love this rifle.
When I first got it I believe the vent hole (White lighting) was two small, got a few misfires, after Steve opened it up just a tad I have yet to have a misfire.