I'm on the other side of the coin from the DA guys. I do 99.9% of my shooting SA. And its definitely more accurate, for me.
On a good day, shooting SA I'll put everything in one ragged hole, or a small group. Shooting DA, not so much.
Until I was 30, no matter what I did, I couldn't seem to hit the proverbial bull in the butt shooting DA. Then, one day, just for fun, I shot a cylinder full (slowfire) DA at a steel target, and was rewarded with six nice sounding "tinks".
After that, I learned that a could shoot DA and hit. Now, nearly 30 years later, I'm still in that place. I can shoot DA, and hit well at close ranges, I just don't bother doing it. Shooting SA, I get good hits at ALL ranges, including the 200yd gong on the rifle range.
I know that people can learn to shoot DA (with a good gun) quite accurately, and very fast, and some can even shoot very accurately DA at long distance.
I'm in the old school that considers the DA function of a DA revolver to be there for emergency use. (not emergency use only, just emergency use.)
I'm competent enough to be able to dump a cylinder full of .38s fast, into a palm size group at across the room range, shooting DA, and I'm comfortable with that.
99.9% of my shooting is SA. About half my revolvers are single action Rugers (ten), where there is no DA option. I carry a medium or (usually) large revolver for sport, and I have a Colt Agent for concealed personal defense carry. Personally, I think I'm covered, as far as revolvers are concerned.
And please, don't write in saying things like "shooting SA will get you killed...".
I'm not a gunfighter, never have been, and don't plan on being one in the couple decades that I have left, and the odds are VERY high I won't be.
I also don't compete or play games that simulate combat shooting, either. For me, there is more to handgunning than just combat shooting, so most of the arguments about what are the best tools and practices for doing that are of little relevance for me.
Understand that I'm not speaking about which method, SA or DA is best, or under what conditions. The OP asked which was more accurate, for me, and for me, its absolutely SA!