let me give you an update on the ziess scope i have been having trouble with,as i said we put new mounts and rings on the rifle and remounted the scope, i got time to shoot it yesterday and it sighted in just fine,and tracked just fine,i always felt that the mount and rings were stressing the scope but couldnt tell where or how,still cant, but all is well now, and its running fine. i dont know how i screwed this up, i have mounted a lot of scopes and never had a problem i couldnt find, and still it fixed its self with the new rings and mounts, the good part is my rifle with this scope shoots great out to 800 yrds.thanks for your comments and advise. rio7