Rifle canting, crosshairs not well aligned,
Those who follow any of my threads know that I like to tinker with my toys. I have a lifetime issue with "canting" my rifles and not getting the crosshairs just right in the vertical and horizontal plane. SOOOO!
I have been looking at tools that others have developed to get better alignment.
There are several different methods and tools that purport to be helpful. I have tried several with modest success. Wheeler's double bubble level kit and similar; The best that I have found to date is mounting the rifle securely in a vise as level as I can get it and to align the cross hair with a plumb bob hung at a appropriate distance.
I recently bought two more tools to see how they might work. I just got them this week so haven't tried them yet but will in the next couple days. If you are curious enough to see what they look like GOOGLE ON!
1. Reticle-Tru by Parabola. It is a plastic (DELDRIN) device to be attached to the eyepiece end of the scope with pointers top and bottom and a narrow slit to look through. Very sturdy construction. Does not require any external aids like a plumb bob. Can be carried in the gun case to check for damage on shipping?
The concept is to loosen the ring screws a bit, mount the device on the scope, position the bottom pointer in close alignment with the center line of the rifle action (tang screws if available) while simultaneously aligning the top pointer with the centerline of the barrel end. When adjusted, the slit is supposed to be aligned with the centerline of the rifle. Looking through the slit, the crosshairs should be visible. Rotate the scope to align the vertical crosshair with the slit. Repeat until the pointers are properly aligned and the vertical crosshair is aligned in the slit. Tighten screws and you should be cant free!
2. Vertical Reticle Tool by EXD Engineering. Aluminum, machined to correct shape. Not fancy machining but seems OK. A V-block slider in a slot in a 6" (about) long aluminum block with a second v-block machined at the bottom and a securely mounted bubble level in at the upper end of the block.
The basic concept is to attach the device to the objective end of the scope so that the sliding v-block is on the objective bell while the second v-block touches the rifle barrel. The rifle is clamped securely so that both v-blocks are in good contact with the objective bell and the barrel at the same time. When this is accomplished, the rifle position is adjusted so the bubble level is "level". The result should be that the scope and barrel are aligned so that the scope is aligned precisely over the bore center. After this is accomplished, the scope (suitably loosened in the rings) is rotated to align the vertical crosshair with a plumb bob string or other suitable vertical surface. Adjust and readjust until you are happy.
The result should be crosshairs aligned with the center of the bore and in the plane of the ballistic arc that the pellet "should" take after leaving the barrel to reach the target. The inventor cautions that the alignment may not be perfect unless the bases, rings, and scope are aligned directly over the centerline of the bore. He has found rifles with the actions drilled crooked that can't be aligned perfectly.
This second one appeals to my sense of galactic order so I am betting on it but we will see.
I will be trying both on 2 air rifles and a host of powder arms over the next few weeks and will keep you posted on the results.
Cheers and happy tinkering
Shoot safe. shoot straight, have fun
Teach a kid to shoot
RWS54, 4.5mm, RWS 4-12x50CI
FWB300SU, 4.5mm, Clearidge Ultra RM 3-9x32