Since you have a Ransom Rest, you might try some different loads and see if there is a magic bullet. My gut tells me that since it is a Pro model and not a PC gun, S&W will tell you it shoots within spec. Maybe not. Worth a try. Any play in the barrel bushing or in the hood when locked up? If not, maybe the answer is a new, properly fitted barrel. Kart maybe? That's a bummer for sure. I once fondled a Pro and was comtemplating buying it pretty seriously. Ended up with a Trojan instead. The barrel fit on the Pro I was looking at put a Springer 9mm in the same case to shame. I would have expected better from the Smith.