Here's some fun stuff:
Metered FRP test on some common cans, both rifle and pistol:
Informal evaluation (demo) of some recent cans on both rifle and pistol. Note that there's no metering, and a camera mic isn't the best, but you'll get the idea. If you listen carefully, in some instances you'll be able to hear faint differences in the first shot with the pistol.
Bonus: If features a CZ 455 Tacticool
And some more stuff:
There are two main designs right now: cans with stacked baffles, and cans with a monolithic core.
Stacked baffles come in a couple of different styles, usually named after their shape, such as K, M, cone, and step. As you can imagine, a stack of baffles might weigh a bit more than simple monolithic core and give you more pieces to clean; however the reduced volume in the blast baffle reduces FRP over the monolithic design.
The monolithic baffle is cut from a single piece of metal, often aluminum for rimfire suppressors, and usually offer lower weight. Depending on other design features, they can be easier to maintain; however, the tradeoff is usually increased FRP, particularly on pistols.
Now, all suppressors can't be judged by a single design element. It's the combination of technologies and features that make a product. So there'll always be better and worse in each design category. This is the part where get to pick what you want. Go online, read reviews, watch videos... and be wary of published sound pressure levels and noise reduction figures. There is standard protocol, but... not all companies follow them, and there are different conditions, ammunition, cherry picked results... you name it. I like to look at data collected in a side-by-side test in controlled conditions. Once something is changed, you'll get different results, which are still valid, just under different conditions - that's just the way it is.
The reality is, given the number of quality cans on the market, you'll be hard pressed to get something that
won't perform well on a bolt action rifle. If you decide to put it on something else later, that's another story, as all hosts are different.
Good luck!
JMK
Edit to add: Do check out Silencer Shop, they have a lot of good resources. But note, they do not carry SilencerCo products. That said, whether you go through Silencer Shop or not, your local Class 3 dealer should be able to get you what you want - go talk to them before you do anything!