Moosie.. I like the shottie.. <- is what my 2.5 year old calls the shotgun. Im not usually one for the special designs but in this case I do like it. That and its a Mossy 500!
I have the 590A1 20" with Ghost-Rings. I removed the 4 round 'speedfeed' stock and replaced it with a BlackHawk Compstock for the reduced recoil.. and it makes a huge difference in shooting. I've had a few days where I've fired off over 150 rounds shooting slugs, 00 and 3" magnums. No purple shoulder or discomfort the following day. Highly recommend this stock if you shoot a lot in each session.
For home defense I stumbled on a large lot of Centurion Multi-Defense Buckshot awhile back and bought it all up. Close to 600 rounds for only 199.00! The boxes were all ripped and torn and deemed to be damaged and they simply wanted rid of them. These are labeled as 2 3/4" shells however made in Spain with the metric system so actual length is 2 3/8". They contain 1 large .650" lead ball which is followed by 6 #1 buckshot pellets. I've tested several hundred at Shooters Choice on the rifle range side and from 15' through to end of range I've found they pattern quite well. Ball and buck always on the mark and seem to keep a decently tight pattern... something I was dubious about when I bought them.
When this is gone I'll likely use the Fiocchi 00 with 9 Nickle Plated pellets. Again nice tight pattern from my smoothbore 20" barrel.
I'd like to get the 18" version of this sometime as well.
Mossberg 590A1 Pr0n : )