As stated by RC, et al, above, and with the *possible* exception of the item I linked to, all 32-20 made today conforms to SAAMI pressure and should be safe to shoot in revolvers made after the blackpowder era (except for Spanish-made knock-offs, which are supposedly unsafe at any speed).
Winchester and Remington's current 100 gr. lead RNFP loads claim 1200 fps, which is doubtless from a rifle or a long (i.e. 10" or more) test barrel, but it is OK to shoot in a revolver. (Not that the stuff ever seems to be in stock. I doubt they're making any when they can't keep up with demand for more popular calibers. Maybe they'll finally catch up this year?) The 115 gr. "cowboy" stuff that claims only around 800 fps might be loaded a little lighter, but I'll bet most of the difference is the heavier bullet and probably measuring it from a revolver. It would be interesting to contact Load-X or Ultramax and ask what they use for a test gun.
The true "rifle-only" Hi-Speed loads made 50+ years ago had 80 gr. JSP or JHP bullets and ran close to 2000 fps from a rifle. Don't load any old jacketed ammo in a revolver, just in case you've found some rare old stuff.
The top strap on my old Colt is about the thickness of two playing cards, so I treat it pretty gently. I've mostly shot it with 3.5 gr. of Unique or 2.5 gr. of Trail Boss under 118 gr. Saeco bullets. I've made a few with 4.2 gr. of AA #5, which is a bit more authoritative, by the sound of it. Haven't chronoed any of these. I also have 90 gr. swaged Hornady SWCs, 98 gr SWC from RCBS mold, and 100 gr. plated RNFP from Rainier (for the indoor range that doesn't allow naked lead). The swaged SWC shoot closest to POA at 25 yards, but I find them a pain to load: too easy to shave lead off the sides.