usp_fan
Member
I posted this queston on another forum also, and I could really use opinions,
I've got an interesting puzzle I'm trying to solve. Recently I slightly modified my Springfield Mil-Spec. I changed the sights to the Yost-Bonitz Rear, and the Trijicon stake on front sight. The heights of these two replacement sights are very similar to the old sights they replaced.
Prior to the replacement, the pistol shot very close to POA = POI.
My pistol now shoots low by about 5" at 25-30'.
Using the formula in another thread here, to adjust the poi, to match my poa, I'd need to remove just under .1" from the front sight! That's a lot of material, and would leave me with not much more than a stub for a front sight, and no tritium vial.
One thing I noticed: After staking the new sight to the slide, I cleaned up the inside of the slide with my dremel. Even so, the bushing was a very tight fit, whereas before, it had been easy to insert and turn.
Could the protruding material from the sight tenon be exerting enough downward force to cause the pistol to shoot that low?
Said another way, could the force of the material against the bushing cause it to force the barrel into a lower orientation or force the slide upwards (increasing the front sight's height)?
I plan to relieve the area some more and restore the bushing's fit to it's previous state. I'd appreciate some opinions on what's going on here.
Thanks,
--usp_fan
I've got an interesting puzzle I'm trying to solve. Recently I slightly modified my Springfield Mil-Spec. I changed the sights to the Yost-Bonitz Rear, and the Trijicon stake on front sight. The heights of these two replacement sights are very similar to the old sights they replaced.
Prior to the replacement, the pistol shot very close to POA = POI.
My pistol now shoots low by about 5" at 25-30'.
Using the formula in another thread here, to adjust the poi, to match my poa, I'd need to remove just under .1" from the front sight! That's a lot of material, and would leave me with not much more than a stub for a front sight, and no tritium vial.
One thing I noticed: After staking the new sight to the slide, I cleaned up the inside of the slide with my dremel. Even so, the bushing was a very tight fit, whereas before, it had been easy to insert and turn.
Could the protruding material from the sight tenon be exerting enough downward force to cause the pistol to shoot that low?
Said another way, could the force of the material against the bushing cause it to force the barrel into a lower orientation or force the slide upwards (increasing the front sight's height)?
I plan to relieve the area some more and restore the bushing's fit to it's previous state. I'd appreciate some opinions on what's going on here.
Thanks,
--usp_fan