Re: who has a 300wsm 180 grain accubond load.
Wapiti, about the hot loads.
I had been using the Nosler book's most accurate load for 180 gr NBT and RL22 in my 300wsm, 67.0gr, to shoot about 0.75" at 100yd. I had gone to the book max, 69.0gr, and things just got worse. Yesterday I tried going up again, starting at 68.5 and bumping by 0.3 gr. 86.5 was 1.5", 68.8 - 2.0", 69.1 back to 1.5", 69.4 - 0.5", and 69.7 - 0.6", all 5 shot groups. No pressure signs at the higher loads on a 50 degree day. It was pretty breezy so might do better in the calm. The public range was busy and I couldn't set up my chrony, so no velocity figures. At least in my gun, faster does seem to be better.
As always, YMMV, work up to max.
There is no "overkill". There is only "open fire" and "I need to reload."