a friend of mine has one of the older models in 308 and 300 win mag. I shot the 308 very accurate out to about 200 ( all we had) and very easy to lay behind.
If you are used to regular bolt the staight pull is different.
I had one, sold it. I got it off SIG's MIL/GOV sales program at a great price. A very interesting concept but very difficult to find the rings mount if you are using large diameter scopes. The cheek weld is just wierd.... Maybe I have shoot AI/SAKO and found it difficult to change. Def not for everybdoy.