I thought I'd post on this again, now that I finally got a scope installed and went to the range to sight in. Ordered a new Nikon 2.5-10x scope for the rifle, it wouldn't work on medium rings because the occular bell is too big and the bolt handle won't clear. So, pulled the vari-x 3 off my 300 mag and used it (the Nikon fits the 300 OK). I didn't want to use higher rings because it would mean lifting my head off the stock to shoot.
First I went to sight in using 165 gr Swift Scirroco's loaded by Remington. The results were horrible, the bullets patterned more than they grouped. I was a bit worried, possible scope/mount problem, a problem with the gun? Figured I'd go back the next day and try some different ammo to make sure the gun just didn't like what I was feeding it. Day 2 went much better, rifle seems to preffer lighter bullets and did quite well, I will find out what further tweeking with hand loads does. The rifle likes the Win Ballistic Silvertips and corelokts.
Steyr prohunter 308 win 100 yds



