Hello I have H-R m12 U.S marked Vianni scope mount , I went thru Mossberg 144 LSA and LSB Remington 540x until I picked up the m-12 ,the other rifles I mentioned were too light they shot good but I like the heavy one ,Redfield Palma rear ,front sight Redfield Internatioal match small bore marked 50 yds and Redfield Olympiic , I like the heavy weight I hold the rifle steady standing ,have a fixed 10 power that I put on when I feel like looking thru the scope ,geoff3