I own a Huskemaw 5x20. I't mounted on my custom 300 wsm. krieger barrel, tekka action, bell and carlson stock. made for me by Ken Haden of H&H precision engineering. Ken has a web site and will make you a long range rifle for about half of what his competitors are getting. his rifles are no joke...
first, loose the lead sled. This equipment does not allow the rifle to function properly when a round is fired. Shoot off some sorta rest that supports the rifle securely and also allows it to recoil as it should. next get a bubble meter (level) and if you can have it installed by a pro...