Very clearly, people have a lot of trouble with caps. I used to use CCI No. 10s but their sizing is inconsistent. Remington 10s are the same every time and fit just fine on the stock Pietta cones that I use on eight different revolvers. Stock main springs, too. I use each of those guns quite a lot and none have cap rakes.
Ive polished the hammer faces on all of them and on the Colts have also polished that cap channel on the recoil shield that leads off to the right. After seating the caps I go around again and gently press each one with a wooden dowel. I do that out of habit and when I forget that step - the caps still stay on after firing. I have to use my thumbnail to remove spent caps.
I have no idea why I dont suffer the troubles described throughout the C&B shooting world. Dumb luck is as likely an explanation as any I can identify.
I know, lucky me an stuff - but honestly, WTF is going on? Happily perplexed.