Bea, this one is for you. I like to use IMR 4350 too because it's the only powder I could find for a long time around here and It's been my "go to" powder in my 30-06 and 338 win mag anyway. Here are the results with a 150gr. Nosler partition (seconds):
First 3 shots go sub moa, 5 shots into moa and 10 shots opening up to around 1.5 moa respectively. This is with a fwt model 70. Good enough for "hunting rifle accuracy":
Looking back at my pictures, this one was shot with a rifle I sold to 79s here on the fire. His daughter is going to be using it on a moose hunt this year.
My pre 64 model 70 fwt also like IMR 4350, but I had to drop the powder charge 1/2 grain to make it happy. OAL was still pretty close to the XTR FWT's (in above pic):
I've ran H4831 with 130gr. nosler partitions as well. My rifle doesn't seem to be too picky for a pre 64 fwt: