LOL! Yeah, now that us early adopters have worked out all the kinks and all you have to do is look up load data;-) When you go to shoot your first batch....take a moment of silence for all those guys that started cold and spend many a range day rodding stuck bullets out of barrels.
Also, bit of advice....clarify exactly what your can is rated for, just saying 300 BLK isn't good enough. Most of the pistol cans are ONLY rated for SUBSONIC blackout, and a minimum 10 inch barrel....a few are rated down to 7.5 and a few are rated for a minimum of a 16 inch barrel. And if your can is capable of shooting wet.....you need to clarify if it's ok to shoot it wet with 300 BLK.
If you are still in the market for a rifle can, I'd recommend the Hybrid 46. Hearing safe up to 338 Lapua Magnum (which is what I bought it for). I'm also a big fan of ASR, and now have ASR adapters on all my rifles that have a threaded barrel. The ASR adapters come in the form of simple birdcage type flash hiders, up to multi-port hate brakes. Once install, it's a quick attach, just spin and lock for your can. No more dorking with pistons, or thread adapters, or whatever.
Personally, I think everyone needs a minimum of 3 suppressors. A pistol can, a rimfire can, and a rifle can.