My experience with SxS's old mid 1800's and back. I have yet to own a choked gun as they were rare in that time. So I never had the problem of getting cards and cushions past a choke. There are other places to get cards and cushions, but I have the best experience with Mike's Quality Shotgun Wads, 317-933-3441. Measuring the bore is a good way to start, but you may find that you may need to try a different size to get a nice snug fit. Mike can also help with some "test" packages, so you can get the very best fit. Good guy, good stuff. Because of my shotgun fetish, I have components for every size from 10ga. up to 24ga. I just never know what I will pick up next.