on_one_wheel wrote:bladeracer wrote:on_one_wheel wrote:I have the same issue with a Lithgow single shot .22
it shoots about 2" high at 25m with the rear seat to its lowest setting.
I often wonder if someone has taken to the front sight with a file.
Building it up as OB suggested to higher than needed then slowly filing it down until it's right is on the cards, Just haven't got around to it yet.
Same with my Model 1B, it puts CCI Standard Velocity 120mm high at 20m. I figured it must've only been fired with very light loads (Zimmers perhaps) and a previous owner altered the sights to suit.
Perhaps it's normal then? mine is a 1B as well.
I wonder how .22 ammo performed back when they were manufactured?
My 1930's Cooey Ace-1 also groups about 140mm high at 25m, you use the blade to centre windage but you have to hold the top edge of the muzzle level with the top of the rearsight with standard velocity ammo.
I doubt there's much difference ballistically, it's still just a cast heeled 40gn bullet at around the speed of sound. I doubt the BC has improved significantly.
But in earlier times gallery loads were more common than they are now. Things like CB's and low-velocity shorts and longs with 21gn to 29gn bullets at around 600-700fps.
It's possible the sights are original and that is how they were designed but it seems unlikely to me.
Try some CCI Quiets (40gn at 710fps) in the rifle, they should print closer to point of aim at hunting ranges.