Update
.458 - Speer 400 flat nose #2749 bullets box/50; 1 box - $30
.338 - Barnes 250 TSX #33848 bullets open box/38 - $25
.358 - Speer 250 Hot-Cor #2453 bullets box/50; 3 boxes $23 ea
.416 - Hornady 400 FMJ-RN #4167 bullets box/50; 5 boxes $35 ea
.284 - Barnes 160 XLC over-run bullets box/50 $27 ea
.284 - Barnes 120 TTSX #28472 bullets box/50; 2 boxes $32 ea
Found a few more of these:
.264 - Hornady 129 Interbond seconds bullets bulk/100 $37
Shipping extra - USPS Flat Rate Priority- so between $5 and $16 depending on what I can fit or how you are willing to have original packaging broken down.
PayPal preferred; USPS MO okay also.