I use R-22 in 30-06 for 180's. 59 and 60 grains both group about 2" at 300. That is all I can expect from that rifle. I use 60 gr. Could go up further, but the speed matches the trajectory I want, and the sight setting aligns with others I shoot.
I haven't seen problems getting Partitions to shoot well for decades now, and those could have been operator error, for all I know: I was still a kid. My brother and his wife have a pair of 280s that shoot Partitions VERY well, as in 1/3-1/2" at 100. Another guy I load for has a model 70 in 270 that shoots the 150's just slightly worse that the best bullets out of his rifle, about 2/3". I don't think the problem is with the bullets, if anyone has a problem getting them to shoot.
The only ones I've ever had problems with were the 22 cal version, but I've decided that the twist rates in a few guns were too slow to get them to shoot straight. They do as well as anything in a 1:8 twist. Not good for me in 1:10, 1:12, or 1:14.
