I had an SP101 but I sold it not long after buying it. Yeah the trigger in DA sucks bad. Most that own the SP101 have replaced the trigger actions and said they were very satisfied after that. Don't count on the stock DA getting better by use.
When I got my SP101 I didn't have any 327 mag ammo but I had found a box of .32 for it. I shot it and thought wow this gun is like shooting a 22lr for recoil. Then I got some 327 mag ammo and I only shot maybe 3 rounds before I put the gun up. The recoil with the stock grips was bone rattling to say the least. It was way to painful to shoot and I ordered a set of Hogue Tammers for it. The tammers made a world of difference.

I really am surprised Ruger brought this gun back into production. Ruger and a few other companies made these guns years back and they all quit making them. For one the ammo is very high cost and the recoil is almost as bad as a 357. My LCR 357 isn't near as bad as the SP101 327 was for recoil and the LCR trigger is the best revolver trigger action I ever experienced.