The .270 with 150 grain Nosler Partitions and the 7mm RM with 160 grain Partitions are so close in performance that the difference is hardly worth a discussion. A bore diameter difference of .007”, ballistic coefficients of .465 vs. .475, velocity difference of less than 100 fps. I too have killed elk and deer with both and honestly can’t see a difference in effect. The only big difference is the weight of the rifle; that’s why I no longer own a 7mm RM and own three .270s. But that’s just preference. You can easily work a 7mm RM into an 8 to 8 1/4# rifle, and there are lots of happy campers who use them. Angels dancing on the head of a pin.
If I want a significant step up in power, I reach for one of the 300s (my particular pet is a custom pre-war Model 70 in 300 Win Mag), shooting a slippery 200 grain bullet at 2950 fps. Increasingly, I’m doubting the extra power is necessary, but I’m just fond of the rifle and take it along anyhow.
