The rear sight of the Rascal is adjustable for up/down and the front sight is dove-tailed for left/right.
The rear sight pivots round the front screw and you adjust the sight up/down and tighten the rear screw to secure it.
I was using Armscor .22LR ammo and shooting from the prone position.
It is worth your time to improvise some shims. This is not something you can eyeball. I used 3 x 5" index cards and was able to move the point-of-impact up-or-down in incremental jumps.
It took 14 3 x 5" cards and one 3 x 5" insert made from copy paper to get a reasonable (but not perfect) zero at 20 paces. That measured out to 0.108" thick.
I am still 3/8" high at 20 yards but the sight is fussy and I am not sure that I am going to get much closer than that. I cannot imagine that a woodchuck or rabbit will notice that 3/8" difference at any range I am likely to attempt a shot.
***Added later: I accessed an on-line ballistics calculator to see what the trajectory is likely to be farther down-range. Because the top of the front sight is only 0.75" above the center-of-bore, the "second zero" is closer than I expected. The second zero is at 50 yards and the bullet drops to about -1.0 inch below line-of-sight by 60 yards.***
The front sight did not require any adjustment.
Every rifle and every shooter is slightly different. The shim-pack that worked for me is no more than a good starting point for the next guy or gal. It should be good enough to "get you on the paper" as you dial in.
If it works, it's NOT wrong!
ReplyDeleteHow were the groups? In my experience with many varieties of ammo, Armscor has been the least consistent of them all, even worse then Remington Yellowjackets (though only slightly).
ReplyDeleteThe groups were embarrassing, but it wasn't the fault of the ammo. I haven't shot prone position since 1974.
DeleteI have a bunch of other excuses...but ammo isn't one of them.
I think they still manufacture stainless steel eraser shields, a tool for artwork shielding some of the pencil lines while the window allows erasure of line. Very thin material and not expensive.
ReplyDeleteGlad to hear the Rascal is working for you. Thanks for keeping us in the loop.
There was a time when every shade-tree mechanic had a set of feeler gages in his tool box to set gaps on sparkplugs and points.
DeleteOr aluminum soda cans ... cut them with scissors (but not the wifes dressmaking scissors unless you want to come home to a note saying "Your dinner is in the dog"). >};o)
DeletePhil B