I've got two Mossberg 590s, one 18" and one 20". The 18 is a bit quicker on target. My only advice would be to practice a bit to make sure you don't have a tendency to short stroke, and that the gun runs reliably with no breakdowns. I wouldn't be very worried about that, but it is always good to confirm.
My "testing" consisted of buying a case of skeet loads, a case of clay pigeons, and a cheap thrower. Up to an old quarry location in the Mt. Hood Nat'l forest, and spent the afternoon doing tactical wing shooting. That'll get a good start on the muscle memory
Oh and google up "the box o'truth" to get the real lowdown on wall penetration and shot spread patterns.
I am a believer in the Federal Flite-Control loads. They stay tight at surprising ranges. See the site above for some testing with them.
Good luck and have fun!
My "testing" consisted of buying a case of skeet loads, a case of clay pigeons, and a cheap thrower. Up to an old quarry location in the Mt. Hood Nat'l forest, and spent the afternoon doing tactical wing shooting. That'll get a good start on the muscle memory

Oh and google up "the box o'truth" to get the real lowdown on wall penetration and shot spread patterns.
I am a believer in the Federal Flite-Control loads. They stay tight at surprising ranges. See the site above for some testing with them.
Good luck and have fun!