Here you go, Ben, will put them in the mail to you Monday.
Two of KeithB's blanks center-drilled and turned to .308" outside diameter (these are for epoxy fitting to whatever you need), and one I tried to finish out to fit your Accurate 31-275BP with a little larger OD at .313" to fit a little more snug into the tapered entrance of Lyman H-dies if you should want to push the bullet into them that deep (probably won't, but you got the option). The nose cavity is .197" deep (metric threaded dial failure on my part, I turned it .200" but it isn't exactly accurate, lesson learned) and .187" on the meplat and .267" at the opening, should match the nose profile with a little wiggle room for parting lines, etc.. I was shooting for .004" oversized, but it ended up a little large due to not pushing the cone that extra .003" depth. Hard to make it perfect without a sample bullet to fit but it's as close as I could get.
I made a little pound cast of the cavity of the #315 punch with pure lead so you can see the profile. If the bullets extrude into the pilot hole like the soft slug did, you can fill it with epoxy, but I doubt ACWW alloy will deform much.