After a thorough cleaning and installing a 30 oz. Wolff trigger return spring (trigger pull is now 2 pounds with just a little creep), I got to the range yesterday with my new Single Six Bisley .32 H&R. The gun shoots very tight groups (1.5" @ 25 yards with .32 S&W long 98 gr. LRN). Unfortunately, every load I tried (Federal 85 gr. JHP, Hornady 80 gr. Critical Defense, Aguila 98 gr. LRN .32 S&W long) shoots 5.5 to 6 inches high at 25 yards with the rear sight bottomed out.
I measured my front sight height at 0.425" from barrel to the top of the sight blade. By my calculations, to raise the point of impact 9 to 9 1/2" (allowing for elevation range with the bottomed our rear sight), the front sight should be about 0.512 tall:
Sight radius x point of impact error
——————————————————-——— = front sight correction
Distance to target
8.25" x 9.5"
——————- = 0.08708"
900"
0.08708" + 0.425" = 0.512
Does anyone have a front sight this tall as installed by the Ruger factory? I plan on calling Ruger to see if they will send me a taller front sight.
I measured my front sight height at 0.425" from barrel to the top of the sight blade. By my calculations, to raise the point of impact 9 to 9 1/2" (allowing for elevation range with the bottomed our rear sight), the front sight should be about 0.512 tall:
Sight radius x point of impact error
——————————————————-——— = front sight correction
Distance to target
8.25" x 9.5"
——————- = 0.08708"
900"
0.08708" + 0.425" = 0.512
Does anyone have a front sight this tall as installed by the Ruger factory? I plan on calling Ruger to see if they will send me a taller front sight.