Variable rate recoil spring

Specifically for Bullseye shooting, is there any advantage or disadvantage in using a variable rate recoil spring vs. a conventional spring?

When I bought my Baer in 2017, it came with an 18 pound spring.  Baer sent me a 16 pound spring shortly afterwards.  When I was discussing using the gun only for bullseye loads, they sold me two springs, a standard 13 pound recoil spring, and a variable 13 pound recoil spring.

Since then I have been told that a ten pound spring would be appropriate for the very light loads I'll be using (3.8, and maybe 3.5 grains of WST with Magnus #801 bullets), and I have  both a 10# and an 11# spring on order from Brownell's.  While digging through my folders for where I stashed my spare parts, I found the two 13 pound springs.  With Jon and Dave both recommending a 10# spring, that's what I plan on using, but I'm curious - what would a variable rate spring do for/against performance in Bullseye?

I've never found them good for much. It lets the pistol come out of battery sooner. Perhaps too soon. I played with several of course in my lifetime. I think they make it a little easier to chamber a round on your 16# hardball pistol but really can't think of another reason to use them.

Len

Variable rate springs are useful in compensated pistols to help them unlock.  They are of no benefit to our pistols.

Thanks - it will go back into the drawer it used to be in for years, in a "pendaflex folder" I rarely look at.