i'm trying t oshoot longer distances at varmints with my rifle, but every time i try to zero the scope at a longer range, like 300 yards, it bottoms out with vertical adjustment before it's zeroed, how do i solvee this? do i put a small block in the back of the mount to raise the scope's back? this question is for experienced shooters ONLY!!
I can't imagine why you would be bottoming out before you got your scope adjusted for 300 yards unless you are using a cheap scope. Most decent scopes will easily adjust to 300 yards. I think you are using this scope an a .22 rimfire rifle and may be using a .22 scope that is not made for shooting at those extreme (for a .22 rimfire) ranges. If you are shooting a cheap .22 scope, your best bet is to take it off and save it for something else than go buy a decent scope. If you are already using a decent scope, you may need to shim up the rear scope mount. You won't need much of a shim so I'd try a piece of aluminum pop can first. If that doesn't do it, you can try something like a piece of a vegetable can.
If you need a new scope, take a look at Cabela's Pine Ridge Rimfire Tactical Scope. It has interchangeable turrets for each rimfire cartridge. It is good out to more than 300 yards and all you have to do after zeroing it according to the instructions is to dial in the distance to your target and you can hold right on your target. It eliminates any need for hold over. They are about $90 in the catalog.
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