Good luck with your Burrius. I bought 2 of them, a 3 x 9 and a 1 1/2 x 4, both ler`s. I put the 3 x 9 on a .357 max. and sighted it in at 80 yrds. I was not happy with my 3 1/2 in. groups, but figurded that would still kill deer at 100 yrds. Set it on 3 x and fired another group. 1 in. center to center, but the center of the groups were abt. 7 in. appart. Sold that scope, the other seems to be alright, but haven`t shot it much yet.