I bought a Ruger New Vaquero off gunbroker not long ago. Havent shot it yet but I figured the down time would be a great time to load up some ammo. I've never slugged a barrel before but after reading a bunch of opinions (here and other places) I tried today. I had some new fishing weights (very soft so I assume pure lead). The tightest point in my NV barrel is .444 this seems pretty tight for a .45 to me. Cylinder throats are pretty uniform at .451 (my apologies I wrote .458 and didnt catch my typo) with the forcing cone a bit tighter than that. Should I be worried about the barrel measuring .444 or did I pull a bone head new guy screw up?
No burrs or anything obviously visually wrong that I can see. Gun appeared new with little or no use when I got it. I didnt drop the lead after I slugged the barrel or otherwise deform it. I'm using Hornady digital calipers, my Starretts are in storage or I'd compare with those in case my calipers are simply off.
Help!