Those are excellent results. Good luck with your hunting. I also got one of my first 300wm's back a few months ago. Its one I gave to my dad. He kept it in the safe and never shot it. It was a sub moa 3 shot group gun as well. Those 90's MKII stainless rifles shot very well. I've had quite a few of them, from 30-06 to 338wm and was always impressed with them. I'll be shooting my 300wm again, but in a better/heavier stock than the boat paddle. The boat paddle stock is excellent for hunting, not so much for shooting off the bench. Especially with its factory hard rubber tire butt pad. I won't even call it a recoil pad, because it doesn't soak up any recoil at all!!!!
I may just give a TTSX a look at though in this rifle. I will probably be trying the 168TTSX out first though.