Not usually, for what you're looking for. I'll tell you now that we can overcome any gas system issues you have, though, so don't worry about gas system (gas tube) length.
I have a a 7mm-08 Wilson Combat barreled gas gun, and it's awesome. It's been on the back burner as far as load development goes, with a bunch of other distance guns on my plate recently - but it shoots, and I've shot it. Wilson Combat is my go-to source for premium barrels in weird calibers.
Here's the barrel I have from them:
https://wilsoncombat.com/barrel-7mm-08-remington-tactical-hunter-18-round-stainless-glass-bead-1-9-5.html
Don't get wrapped around the axle over the desire for a 20" &mm-08 over this 18" 7mm-08 barrel. It'll do everything you ever want it to do, and then some.