Just can't go wrong with Belisle 330's if you are buying bodygrips for wolverine.
That said, Caught 4 wolverine so far this season, even split between 280's and 330's. We don't usually set 280's on purpose targeting wolverine except on "pole" type sets sometimes, and I have a hard time imagining an advantage to a 280 over a 330 in almost any situation for wolverine. However, have quite a lot of 280's set on trails in blind sets for otter and picked up two bonus wolverine in those so far this season (30 otter so far also). Both dispatched quickly. It's a lot like catching otter in a 220. Using a slightly undersized trap tends to insure perfect strikes right behind the head if you can still get the critter to go in. My 280s are mostly pretty old, cheap ones, at this point for that matter. Have maybe two dozen 330s set for wolverine right now, mostly belisles but a few Bridgers. The Bridgers are much newer and significantly stronger. I GROSSLY prefer the belisles and it has nothing to do with killing effectiveness. They are just better traps. Killing effectiveness is mostly strike placement which is just a combination of trigger configuration and then factors mostly outside of your control. The only reason I don't own 300 belisles 280's and 330's and instead mostly own dukes and bridgers is the same reason as everyone else. They are cheap. (and used to be even cheaper) Bought 4 doz of the Bridger 330s for an absolutely ridiculous price years after I had decided I grossly preferred the Belisles. heh. That said I will reiterate that cheap traps kill stuff just fine, the issue isn't with spring strength at all in my experience.The Belisles are made with much better steel, and hold up markedly better over the years (this is why if I could go back in time 20 years I would probably only buy them), the safeties are better, and they are MUCH easier to set with my hands. I do not carry setters of any sort and have set and taken critters out of thousands of big conibears with just my hands. The fact that Belisles simultaneously easily pass over the center hinge but also do not ever jump around the corners is just SO SO SO SO nice. Wasted 10 minutes the other day with a wolverine in a Bridger 330 and a fair bit of snow because the second spring kept jumping around the corner (due to critter in my way etc) had to unhook the trap from anchor to get critter out.