Joel,
I shoot both single and double action, mostly single. And I do keep my guns clean. As to the 358429, it's always been good in anything I've tried it in. And, I did use 358156 for several years but it made a small, ragged hole on target, so I got rid of it. That's what I think might have been used on the target the factory sent? Those holes are very small. Also, did he fire it at 5 yards, 10 yards or? I wish they had sent more info with that target.
I think I will work with Unique for a while. I use 2400 in .38 Special and have had good luck with it. But it's a little too heavy (hot) for target. My favorites for all round use are semi-wads, so I think I'll stick to them for a while yet.
Dick