yes,  or just put a shim under it and try it.  maybe about .030 will do it    art

Find a slightly lower front sight block or higher rear block.

.22 Long Rifle cartridge.  When raised to max elevation (Lyman 20X STS) I have about 3/8" clearance between scope & barrel.

frnkeore wrote on Aug 10^th, 2015 at 4:33pm:


My 3/4" tube 20x Unertl did too.  Had to go to higher blocks.  My Ballard is 1/2 oct ~ 1/2 round.

Yes, my old 3/4" tube scopes will get me to 300 yds. just fine, and almost to 400 yds., but not quite. Had to pick random brush and rocks above the target to reach 400 yds. to 650 yds.

If you have a low rear base and a tall front base the scope levels out perfect is that ok? Hank

Hank45 wrote on Aug 12^th, 2015 at 8:17am:


Yes, that is the prefered method, with a tapered barrel. You see that a lot with bolt action rifles. That's so the top of the blocks and therefore the dove tails, are inline with the bore axis. But, if you can't obtain that, always make the front block lower and the closest match to the rear block.

That will generally put the rear mount, somewhere in it's midle range of adjustment, for our velocity range.

If you want the maximun adjustment and your closest range is 100 yards. Sight it in about 3" low at 100, with the lowest velociy load that you will shoot and keep raising the rear block, to maintain that "O".

If you have a way of measuring the distance between the bottom of the scope tube and the bottom of the cradle that it fits in, in the mount, that should be the amount that you can raise the rear block but, keep in mind that the bell of the scope, may interfere with your plans and you may have to raise the front block first.

Frank