Rifle Scopes Canting effects and elimination thereof

Short-bus

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Apr 13, 2008
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I have a question, i've been doing a lot of reading of the different devices used to detect, and eliminate the canting of the rifle/scope for long range shooting. Today I put a new 20moa base on my .22 "trainer" so that I can now engage targets outwards of 300 yards as I could only get almost 200 with the old setup. I mounted the base, and used a level across the base to get the rifle level and supported it well on my bench so that it wouldn't move while installing the scope. I then installed the scope and used the level across the elevation turret to get the scope level, a visual indication through the scope made it appear level as well, no obvious issues.

Here's the question. When I install my scope level on the scope itself, and insure that it's level through the use of a plum line, if the rifle itself isn't truly level, but the scope is, what issues could I face? I know, and fully understand the issues of the canted scope itself, however what about the level scope, but not level rifle? Am I ok in assuming that the scope base mounted to the rifle and the rifle leveled using said base? Or is there another method of insuring that the rifle was level? And for the final question, am I just simply over thinking the entire situation, and should I simply make things as level as "I" can make them, and just start shooting?

Branden
 
Re: Canting effects and elimination thereof

You wrote that you used a level across the base to get the rifle level, and then used a level on the scope. That's probably adequate.

Consider this - we shoot rifles, most of us, without a level to indicate when the rifle is level. If the scope is level with the base, we may still have a slight issue with cant from the rifle not being level while shooting.

So, I'd say you did as well as you could. Have fun shooting!
 
Re: Canting effects and elimination thereof

You can check the entire setup by setting up a 4x8 piece of plywood and dialing in elevation so your shots run up and down the plywood. They should be perfectly plumb. If they are not, either you are canting the rifle or the scope is not level.

John