Hi Deuce, Yes they are lots of fun. You have to be careful or you'll end up scrounging for barrels everywhere.
I have 223, 30-30, 309JDJ, 357 Mag, 357 Max, 357 Herrett, 45 Colt, and 45-70.
If you want a hot 30 cal, the 309 JDJ is fun to play with. Mine started as a 12" 30-30 and I sent it to SSK for a rechamber. It's a 444 Marlin case run partway into a 308 win die, then fireform to blow the body and shoulder out. It'll push 165s to 2400ish.