130 vs 150gr bullets for 270wby?
I've been working with a 270wby for a while that I picked up last year. It's all decked out with a 28" Krieger target barrel and should be shooting great. But I've been having trouble getting good groups with it. I've been working with 150gr Sierra boattails and IMR 4831, IMR 7828 adn R22 powder (which are the ones I've heard most people reccomend). I've been having trouble getting groups better than about 2.5" at 100yds. Obviously not the kind of accuracy I was looking for when I bought that Krieger barrel.
So the other day on a whim I loaded up some Hornady 130gr Interlocks with (I think) 72.3gr R22. Right away they shot a little under 3/4 of an inch, which makes me think that I can improve that by fiddling with the charge.
So I'm tempted to think that this gun just doesn't like the 150gr bullets. So here's my question: I usually shoot bullets that are on the heavy side thinking that I will get better down range accuracy and hitting power. In my 300WM, for example, I always shot the 180gr bullets. But in the 270wby am I really giving that much up by going to 130gr bullets? That 28" barrel should give them plenty of velocity. I'm mostly going to use it for deer and possibly for elk. I just want to make sure I'm not undergunned too badly.