Re: Blueprinting Jig
I think most are pretty much "custom" in that people make them to their own specs. Measure the OD of the biggest action you plan to use it on, add 1/4-1/2" to make adjustments and that will be the ID of the inside of your jig. Decide what wall thickness you want so that it's rigid and gives a good bite to the adjustment screws and that will give you your OD. You could also just buy a peice of solid round stock and bore it out to what you want. Search 300sniper and wmroscoe, I seem to remember them posting some nice ones a long time ago.