Hrmph I must be an idiot, I can't find a way to edit my posts. Wouldn't surprise me if I missed something.
Anyway - I misspoke with my round count in my first post, I just realized...it was after the 500 round mark, not well before that I ran into it. I was pretty happy my first two range trips with it, and had started using it as my carry piece with the 18lb spring. Then I started getting the light strikes.
The 19lb spring change acted up before that round count though. I'm honestly wondering if it was an over-application of grease in the spring or what, maybe it was my fault? But reverting to factory seemed to be the safest thing to do with a 220 in .45.
Maybe I'll have better luck with a 9mm or .40 P229...
Ahh, apparently editing a post is time-sensitive? Makes sense actually...anyway -
I was thinking specifically of the 220 compact I had tried the spring in, which did get light strikes earlier...but that's not really an apples to apples comparison; the hammer strut is much smaller, the angles are different, etc. The full size 220 didn't really start to accumulate light strikes until a couple of sessions at the range.