I believe I read somewhere a while back that some states do not allow muzzleloaders that use smokeless powder. Can anyone tell me if smokeless is OK to use during the muzzleloader season in:
Illinois, Iowa, Kansas, Colorado, Utah, Arizona. Thanks.

You need to check the State F&W regulations for each season. Most or all will have the regs up on a website somewhere.

That stuff changes so much due to politics or whatever, you almost have to check the day before you leave on trip. Some states do NOT allow smokeless, while the rifle is still legal if using BP for propellant, and some states do not (or used too) allow BP substitutes. All states can be different from other states as to sight, projectiles, caliber, etc.

Not sure about the states you mentioned. I think most smokeless powder muzzleloaders will also function fine with black powder, so not sure if the "guns" would necessarily be illegal(?). I pulled the hunting regs out for WI and it states the ML's must use black powder or black powder substitutes. So I'm thinking a Savage ML using T7 would be just fine........................

If it was my call, smokeless would be illegal in every state for primitive weapons season. We're getting way too far away from the group of hunters and rifles that this season was designed around. If you want to go smokeless, buy a SUCKS and hunt in firearms season!

In the state of Colorado, the use of smokeless powder in muzzleloading season is illegal. Black powder and black powder substitutes are legal.

Gopher - Your response didn't answer my question but since you have such strong opinions -- I also hunt with flintlock, in-line, bow, shotgun and rifle. I also have trapped for 40 years. I know a thing or two about traditions and doing things "the hard way".

Thanks for your two cents but I personally have no problem with someone using smokeless powder. If I travel to a western state for a big game hunt, my flintlock will be home and an in-line will be with me. If scopes are legal it will bear one of those too and I'll also carry my rangefinder and most likely bring a GPS - Daniel Boone would be envious. Merry Christmas to you and your round balls.

It's not illegal in Iowa.

Well golly gee Slammer, that's very observant of you! And by the way-me and my balls did have a very nice Christmas-thank you very much for your warm wishes!