Re: 270 winchester and 140 berger hunting bullets
I shoot the 150's, but my rifle also likes H4831SC the best, also tried RL 19, IMR7828SSC & IMR 4350. I use F215M primers.
3,000fps should be fairly easy to get. My 150's are at 3k fps.
Also I tried the "Jump Test" for seating depths. I tried .010", .050", .090" and .130" (these are all distances from lands, on my hunting rifle I didn't seat any into the lands). My stock Rem700 preferred the .050" jump the best. You may be limited by mag length on this. But I think it's worth testing, the different depths produced largely varied accuracy and SD's.
My rifle also prefers the .302" bushing for neck tension(Win brass, unturned necks).
I started out with the 130gr VLD's but didn't have enough neck to seat them close to the lands, so I bought some 150's and haven't bought another bullet since then.
The Berger's are very accurate and have proved devastating on deer.