Pretty certain the crafting of that '252' 22 wheel gun is no less than that of it's larger brethren. Now, you don't want to just slap a chunk of metal on there, right?
You have chosen a high quality firearm that was probably originally sold at quite a premium relative to what your trading for. Your probably already familiar with the extent to which Freedom Arms stands by its products. Sure, it's stated that your Premier's warranty is to the original owner, experiences are usually that the company is fair. When the owner of the company, Bob Baker, addresses clients questions about their products online, their integrity is really displayed. Though the $130-ish dollar cost of the mount is expensive, in my opinion, its the right choice.
When it comes down to it any of the typical mounts will probably work out just fine for you. I tell you what, if you send a pic on this forum once you get it, I'll send you my Leupold scope and mount as a courtesy--just send me a few dollars for shipping costs. I have since sold my handgun scopes so its just sitting in a case. I preferred this model in the past as it's weight allowed me to get more comfortable shooting the 500,and 454 for that matter, with hotter loads. My only request is that if you don't end up liking it, or end up buying the Lovell, send it back to me.
I just took a photo of the Leupold mount/rings with my phone but unfortunately jpeg isn't supported. Feel free to write me if you'd like me to e-mail the photo to you.