Another 20 ga. recommendation
I offer the information below mostly as someone elses opinion on the subject.
I give credibility to Ayoob's opinions as he is well recognized in the field of self defense. I may not always agree with specific's but in general I believe his opinions are as credible as most. I am not sure I either agree with him or know why he dislikes the 870 in 20 ga. That is his opinion . Not to mention that long before I heard of him my HD shotgun was a 20 Ga. Mossberg 500 with 18" tube so I take no argument with him on that choice.
The quote below I pulled off the internet somwhere.
"20 Gauge The 20 is an excellent self-defense caliber, particularly for those who dislike the recoil of the 12 gauge. I recommend the 20 gauge over the more popular 12 for home defense. Choose the 20 gauge 3" shell Federal "Classic" #2 buckshot (F207-2-5PK) with 18 pellets, or the Winchester "Double XX" Magnum #3 with 24 pellets (X203C3B). If your gun cannot accept 3" shells choose the Remington #3 with 20 pellets (SP20BK5PK-3). All of these loads provide definitive short-range stopping power. I specifically recommend the 20 gauge for women and recoil-sensitive men who dislike the blast and recoil of the 12 gauge. "Delivering roughly the ballistic force of two .44 Magnum rounds at once," comments the knowledgeable Ayoob, the 20 "delivers 75% of the lead for only 50-60% of the recoil". Many police departments have found their officers shoot much more accurately in realistic training exercises with the lighter-kicking but still potent 20 gauge. If you are new to shotgunning and considering getting one for self-defense I strongly urge you to buy the reliable and reasonably-priced "Mossberg 500 Special Purpose" 18.5" barrel 20 gauge pump shotgun (catalog #50451). This tried-and-true workhorse is the standard shotgun of the U.S. Armed Forces and costs a little over $200. You'll be much happier with the lighter-kicking 20 gauge than the 12 gauge version used by the military, and - most importantly - you'll shoot the 20 more accurately and rapidly. For an in-depth look at the 20-versus-12 gauge issue I recommend all shotgun owners (and potential shotgun owners) read 'Stressfire II: Advanced Combat Shotgun' by Massad Ayoob. Perhaps I am beginning to sound like a broken record on the theme of Ayoob's books, but once you've read them you'll understand why I recommend them so highly (and repeatedly). Note: Ayoob dislikes the 20 gauge Remington 870 pump shotgun and recommends you choose the Mossberg 500 in 20 gauge for general self-defense and home-defense use. So do I. For ultra-close range home defense birdshot will do the trick. Choose any #4, BB or larger high brass lead hunting load, and have the balance of the magazine filled with #3 buck in case the birdshot doesn't put them down fast enough. Avoid slug use in 20 gauge; you are better off defending yourself with buckshot. If you must use slugs, pick the Dynamit/Nobel or Federal "Classic" (F203-RS) rifled slugs. Using slugs requires careful aiming and rifle sights: few 20 gauge shotguns have the latter."
