Haven't tried them in the 300 win but they shot really well out iof my .308 stealth they blow bunny rabbit's right to pieces.. Also my best freind was shooting them with some succes out of his 300 ultra mag they were quite accurate in his rifle out to 100 yards but the groups seemed to really open up past 200 I used 46 grains of varget in the 308 probably not the most efficent load but it seemed to work..
I shoot the V-max out of my .300 WM 112bvss with a weighted Choate stock (22lbs)10-40x-50ao tasco. Range of 1-330 yds makes messes of PDs. Be very careful of the excitement, as barrel heats up fast. Shoot a few then go check the mess.
The load is once shot Winchester brass, neck sized with 78 grs of imr4350 and Federal large rifle gold medal match primers. I seat the bullet 0.3 inch into the neck. My Nosler #5 manual (pg.43)gave me the seating idea. Not seating these light bullets deep enough makes them shoot all over in my rifle. Hope this works as well as it works for me. 125gr Ballistic Tips work well too but cost is more and mess is less. Does not fragment as well.