[usp_fan]

I finally had time to take my project springfield out, sit down, and put it on paper. All my shooting through it has been very informal to this point. The pistol has had no failures to cycle and groups very well. However, at 35', POI is about 4" below POA. I can't file the trijicon front sight, and the rear is a fixed Yost-Bonitz model. I am shooting 230grn. Win. White Box. Can I raise my POI by shooting a lighter/faster bullet? I reload, and can experiment. I'm just looking for information to lead me in the right direction.

Thanks,

--usp_fan

[brickeyee]

Lighter and faster is liable to print even higher.
Faster bullets often print higher since the gun has less time to move under recoil. The bullet leaves the barrel sooner. A slower bullet provides more time for recoil to change point of aim and prints higher.
4 inches at 35 feet is not bad for a combat gun with fixed sites.

It is backwards. Lighter prints lower, heavier prints higher. Sorry.

[Majic]

The above post got a little confused. A lighter faster bullet will hit low as the barrel hasn't had time to rise under recoil. The heavier slower bullet will hit higher as the barrel has had a chance to start rising before the bullet leaves.
If this is your project gun did you purchase these sights and installed them? Do they sell a taller rear sight or shorter front sight?

4 inches at 35 feet is not bad for a combat gun with fixed sites.
That's horrible for any pistol. Just imagine where it would be shooting at 25 yards.

[usp_fan]

They do sell a higher front sight. I'm reluctant to pic one up without paying to have the slide modified for a front sight dovetail. This one is staked on, so removing it will ruin any resale value. My goal with this pistol was to do all the work my self, so sending in the slide would be admitting defeat.

If I do send it in, I've been thinking of sending the top end to Yost-Bonitz for one of their front sights with the gold bar inlay. It isn't tritium, but it is supposed to pic up ambiant light very well.

Thanks for the info.

--usp_fan

[Majic]

A taller front sight will have you shooting even lower (remember that you will be holding even lower).
Getting a Yost-Bonitz front sight is probably the best idea as it will be matched to their rear sight. Just remember to get the correct front for your slide's length.

[johnmcl]

USP,

Take a look at my thread on "1911 Shooting Low". Several really good thoughts came forward on my identical problem of a new, but low shooting Springer 1911. I thought one of the most interesting, although yet untested, is that the heavy trigger is causing me to pull the gun down.

My recommendations is to shoot it off a bench rest before doing any filing.

What do you think?

John

[Vern Humphrey]

My recommendations is to shoot it off a bench rest before doing any filing.


Shoot a handgun off a bench for accuracy testing -- shoot it offhand for zeroing. Handguns will often shoot to a different point of impact when hand-held.

[Missouri Mule]

It has been my experience that 185 gr bullets tend to shoot a little lower than standard 230 gr hardball.

I have also found that for me at least 185- 200 gr +p's shoot to the same poi as hardball. I can't explain why but that has been ny experience.

[usp_fan]

johnmcl, thanks for the advice. I'll check your thread.

Vern, That's my practice also.

Majic: you are right, my mental slip--thanks for catching it.

I've shot both benched and off hand. I'll put 100 more rounds through her and make sure it's the pistol and not me. Then I'll decide what to do.

thanks,

-usp_fan