Re: short throat 6.5 creedmore reamer
VLDs will take jump, 0.050" isn't as bad as you have been lead to believe. 1K line at Capaitan several years back a buddy was short rounds to finish match, he used some of my ammo loaded with JLK VLDs. Held 1 MOA or better (he was inside of F-class 10 ring for vertical) at 1K and IIRC, when we talked chamber dims afterwards those bullets were jumping well over 0.150".
I've tinkered with VLDs in gas gun some in the past. I run SMK, Scenar, A-max in gassers and leave the VLDs to bolt rifles. One issue is you are seated deep in case, kind puts you between powders: unable to get enough of slower burning powder in case to get velocity you expect, quicker burn rate powder pressures up before getting to desired velocity.
You are correct, can always throat it out. I'll seat a 140 VLD into 6.5CM case, see how much bearing surface is out of case.