I ordered a variety of 110 grain 308 for my 300BO from Natchez and they arrived last week. Hornady 110 Varmint SP, Sierra 110 HP, Speer 110 TMJ RN (30 Carbine bullets) and Branes TSX 110 (not tipped - those were sold out). Lee dies arrived and I put them in a head for the Dillon 550. Used a Lee powder drop with a bushing for 18 grains of H110. Loaded up 10 of each except the Barnes. Put a lot of lube on the bolt of the PSA 7.5 inch upper and went to range. They ALL worked first try and I was surprised as I heard the 30 Carbine bullets were problems in 300BO. Used some VN era 20 round mags - got some Lancer 20s on order. Bolt locked back - no issues. Did a rough zero on a dot I have on hand - C More slide ride. No issues 7 yards through 15 through 25 through 50. I have a few hundred 300BO brass on hand - pays to be a brass chicken. Loading up the rest of the Speer 110 TMJs and some more of the 110 SPs and HPs. Will make sure all this works and then try a few of the SPs and HPs with some more powder.