Not intended to be a best ever type list, just what I would like to receive for Christmas.
.224 - 224 Valkyrie (20"-22" AR upper for use slinging mag length 80gr and 88gr ELDs out to 1k)
.243 - 6mm Creedmoor (long range laser beam with heavies, might be my next RPR barrel)
.264 - 6.5 Creedmoor (already have two that I use for hunting and LR, wouldn't turn down another, especially if it was a Tikka CTR or an AR10 with a nice barrel)
.284 - 7mm SAUM (lightweight-ish ~20" threaded barrel to run suppressed as a dedicated elk smacker)
.308 - .308 Winny (16" bolt, or maybe an AR-10)
.429 - .44 mag ( twisted fast, Ruger 77/44, to be used for slinging suppressed heavies on the cheap)
.452 - .450 BM (same use as the .44 but available turnkey and much cheaper from Ruger in the American Ranch rifle)