[Peter M. Eick]

Here is the situation. I have this Springfield P9 Ultra IPSC in 40 that I have shot a lot, something like 9000 rounds now and frankly it has never been that accurate. I was shooting it today at 15 yrds and it was doing about a 5" group while my 210-6 was doing a 1" group for 50 shots. The sights are both the same so I am ruling out my skill since both guns have about the same ergos.

So, where would you start to diagnose a fundamentally not that accurate of a gun. I decided it would be fun to work on my smithing skills and turn this gun into a project because I like the gun and like to shoot it but I would like it to be more accurate.

[Jim K]

I am sure you will receive lots of advice, mostly good. But here are some general rules. Look first at the barrel-slide fit. Look at the barrel lockup. Slide to frame fit is less important than barrel-slide, but is important.

Trigger pull can be important, though less to an experienced shooter. There are other factors, but those are the first I would look at.

The barrel could be bad, but that is not easy to check unless you have two identical guns.

Jim

[Jim Watson]

Bet your SIG isn't a .40.
That round has never had a great reputation for accuracy but 5" at 15 yards is absurd.

I'd try to find it some better ammunition first.
What are you using now?
I expect JHP to do better than FMJ and that better than plated.

You could slug the bore, if it were an odd size, a proper cast bullet might be better.

I don't know of a source of a barrel or of anybody gunsmithing the P9 Springfield-Tanfoglio but somebody on Benos might.

[Peter M. Eick]

Sorry for the delay in getting back. My home machine took a motherboard failure and I had to buy a new machine.

The 40 ammo does well in my 610 so I doubt the ammo as it is. It may be a bad combination of the ammo and the gun. The ammo was nosler 135 jhps with a load of AA5 that historically has been quite accurate.

I can slug the bore and look at it and see what I find out. The trigger is good overall which is why I want to save the gun. I hate to just dump it when it is a fun to shoot little beast.

I was thinking of tightening up the slide to barrel fit with some thick clay and see if that would help at all. Overall the fit is reasonble, but not tight. It is not loose like a beretta but not tight like a baer.

Any other suggestions?