I have been testing a number of factory rounds in my .270 (Savage 110) and have seen a marked difference in the loads my rifle likes. The top 5 (in order) that I found were:
Fed Prem 150 gr Nosler Partition
Fed Prem 140 gr Accubond
Hornady Light Mag 140 gr BTSP
Hornady Light Mag 130 gr Interbond
Winch Sup 140 gr Failsafe
I won't even list the other 3 loads, because in my rifle, they would be better used as paper weights. Incidently, in my case at least, the first 2 were as close as groups could be ( both 3/4 " @ 100 yds) and the next 2 were also very close ( both 1&1/4" @ 100 yd) and the last one was nearly 2" @ 100 yds. Hope this gives you some ideas. Of course what works for me probably won't work for you, ....but who knows :lol: