i have 3 different 270's. my tikka t-3 and a ruger 77 MKII and my sons ithaca lsa65. i load 53 gr IMR4350,130gr combined technology balistic silvertips, winchester brass and CCI250 primers w/oal fo 3.30". this load will shoot sub 1" groups at 100 yds out of all 3 guns with the ithaca being the best with a .475" group. and the tikka @ .505". and the ruger comes in at
.75 ". we use this on PA. whitetail with awsome results.
now these loads were worked up for my guns so use as an example. good luck in finding a load check out a couple of different loading manuals and experiment to find what works for your gun and have fun thats what reloading is all about.