IOR is among the toughest of scopes. thier 30 mm tactical series is not cheap but of the highest quality. IOR are the largest supplier of millitary optics in the world. Thier stuff is just gaining paopularity here in the US. They are made in europe (Romania). The 2.5-10x42 in a 30mm body should set you back about 700 bucks. here is the link
www.valdada.com
Weaver makes a great scope called the Grand slam. It is made in japan, has pretty good optics and is said to be tougher than most scopes and is made for hard kicking calibers. Weaver literature indicates that this scope is not prone to shifting zero when subjected to heavey recoil. The 3-10x40 is areound 320 bucks.
okcmco