Re: Seating depth for boat tail bullets in belted magnum cartridges
This topic was briefly touched upon over at Benchrest Central; Mike Bryant made a good suggestion that the shank base of the bullet should be just slightly ahead of the shoulder/neck junction. Why slightly ahead?--well, if you end up with a doughnut, it'll pinch a tad.
I don't have that trouble, and seat my bullets exactly flush with the base of the case neck. Of course, it becomes rather expensive having reamers designed for the "perfect fit" every time. [img]images/icons/wink.gif[/img] It doesn't drastically, aside from internal case capacity, matter how far the boat-tail portion of a bullet extends into the case, the shank is the part that forms the gas seal--try to keep that portion seated either flush or slightly ahead of the shoulder/neck junction.
As far as accuracy itself is concerned, so long as the doughnuts aren't nailing you...the set-up you have now may work just fine. A lot of speculation goes on about pressure shock waves and stuff that gets DEEP <both technically, and the bullsh*t itself, so watch yer` step.> [img]images/icons/smile.gif[/img] A throating reamer's about $65 or so, so if it's something that's really bugging you...have at it. Of course, to rechamber and all that...boy, unless we're look'n at a Big W special, I think I'd just live with the ooops. And stick to seating into the lands. [img]images/icons/wink.gif[/img] Best of luck, partner. And don't feel bad; I once screwed myself on a $4000 rifle...yes sir, I made a flaw in some measurements, and later determined I would've preferred a different seating depth. Awl, well....it's only money <and a tad of pride, not to mention <gulp!> accuracy. [img]images/icons/grin.gif[/img]