Recoil Spring for STI Eagle 9mm

[usp45ss]

I've been using my STI Eagle in 9mm for IDPA matches a lot recently. What weight recoil spring comes from the factory? I run 147gr bullets at about a 135 PF or so. The ejection isn't very stout, but it is very reliable. I'm probably due for a new recoil spring in the near future so I figure I will go a pound or two lighter on the recoil spring. Any suggestions?

[al503]

I'd run something light like a 7 or 8 lb spring. I think STI usually puts 12 lb springs in at the factory, which will work for WWB/115 gr factory bullets.

I run a 9 lb spring for 125 bullets at about 134 pf but that's with a lightened slide.

Edited January 16, 2009 by al503

[bkeeler]

I've been using my STI Eagle in 9mm for IDPA matches a lot recently. What weight recoil spring comes from the factory? I run 147gr bullets at about a 135 PF or so. The ejection isn't very stout, but it is very reliable. I'm probably due for a new recoil spring in the near future so I figure I will go a pound or two lighter on the recoil spring. Any suggestions?

From STI FAQ page. http://www.stiguns.com/faq.html

Q. What is the recoil spring weight in my gun?

A.

As follows:

Compensated pistols 9 pounds

5" 9mm guns 12 pounds

5" .40 S&W guns 14 pounds

5" .45 ACP guns 16 pounds

6" 9mm guns 10 pounds

6" .40 S&W guns 12 pounds

6" .45 ACP guns 14 pounds

BK

Edited January 16, 2009 by bkeeler

[steel1212]

I run a 9# recoil spring in my 9mm eagle in IDPA shooting 138PF 124s JHPs

[gfmun]

I run an 8 pound spring in my 9mm Eagle. I purchased a 7, an 8, and a 9 pound and tried them and the 8 pound works the best for me. I have shot it with 147 grn and 125 grn, no problems at all.

thanks,

George