Don' t knock those core lokt bullets. I have a 270 my grandfather gave me and it will shoot those bullets better than anything that I feed it, .75" all day long. Sometimes it will put three bullets overlapping each other. Noslers, TBBC, failsafes, etc are all hovering just over an inch or more.

A lot of thimes the very simply constructed bullets will provide much better accuracy than the more complex bullets.