Correct spring weights for full power loads

[Wkfireman]

I just bought a Springfield TRP longslide and a Kimber custom eclipse. I plan on shooting only underwood 180gr and 200gr or the handrolled equivalent in them. Would a 25lb main spring, flat bottom firing pin stop, extra power firing pin spring, and 18.5 recoil spring in the long slide, and 20lb recoil spring in the standard slide be enough, or should the spring weights be heavier?

[Trapper6L]

Remington R1 10mm longslide.  To keep the brass in the same county, I went with a 25lb main spring, flat bottom firing pin stop, and the strongest recoil spring Wolff makes. I had to cut the recoil spring to length to work in it but it's designed to be customer cut. They do not rate the spring as the different lengths yields different rates. The pistol still chunks brass into orbit but the recoil is not near as violent. I also use a Wilson Combat rubber buffer. The gun runs a lot better but no woman is ever going to rack the slide. It's a tough one to rack for me and I ain't no little guy. If the gun didn't shoot as good as it does, it would belong to someone else. I'm shooting 1" groups at 25 yds from bags with it using 12.8gr 2400 under a 180gr HST bullet.

[Wkfireman]

Thanks, for the info, gonna try those out. What kinda velocity are you getting with that load?

[sqlbullet]

I run your set-up with an 18.5 in my 1911 10mm's.

Bill Wilson says:

https://www.m1911.org/technic1.htm

I have run up to a 24# spring in the past.  It did not effect ejection distance in any meaningful way.  The only reliable solution to putting your brass in orbit is to alter the ejector.  I just place a tarp 30-40' from where I shoot.

[Wkfireman]

Thanks for the help, the springs should be here this week, hopefully I can try them this weekend, and I'll let y'all know how it went.