Stan, I'm assuming you have mounting blocks on your rifle. Without blocks, you won't be using a Unertl type external adjustment mount. I use both the external adjusting Unertls and regular top mounted Vultures. Both work fine, but the Vulture is probably limited to 10X. For some Unertl prices, search "unertl" on Poulin's December auction. If I had my choice of a vintage rig, it would be a external adjusting Unertl or Lyman Targetspot. My light Swift is a Model 70 light National Match Sniper with a Lyman Junior Targetspot, 10X if I recall. I shot two sighters with it and am looking forward to moving those sighters over about an inch.
