Most hunting regulations are very similar and we can do the same during regular rifle season. We can hunt any regular rifle season with bow, crossbow, or muzzle loader here in Colorado as well. Our muzzle loader season isn't as restrictive as some, but definitely not as liberal as some other states.
Our main rules are no pelletized powder, no electronic ignition, no sabots only full bore bullets, and no optics unless your vision isn't correctable with glasses or contacts. Archery is pretty similar and crossbows and draw locks aren't allowed unless you can prove a disability. However, there are a lot of states that allow all of these things and it's all about trying to manage deer or other game animal numbers.
Just like my daughter took three deer in Oklahoma last month during rifle season. In OK if you hunted archery, primitive, rifle, and late doe season a person could get a total of six deer. Five antlerless and one antlered, and if I remember correctly LA's bag limits are quite a bit more liberal than that. CO only allows for one buck and one doe, but since all deer hunts are draw only it's very difficult to get two tags in the same game management unit. In CO you can only draw one tag per species, and after the draw they post a leftover list of tags that can be purchased OTC.
As far as getting loads down in speed the .45-70 probably has the most subsonic load data of them all simply because it's the oldest cartridge, the only issue is it has the heaviest bullets. Cast bullet data for all of them will get you a light recoiling load suitable for recoil sensitive shooters. If most shots are 200 yards or less I'd be perfectly happy with the .35 Remington in a single shot rifle not restricted to lever action safe bullets.