In addition, here’s few things I’ve learned over the years about Home Defense with a Shotgun:
For self-defense inside the home at short distances, the brand of ammo, type of choke, or size of (#1 or larger) buckshot isn’t as critical as shot placement from a well-fitted 12 or 20 gauge shotgun with a simple weapon light (i.e. Streamlight TLR1 or etc…). An open Cylinder (C) or Improved Cylinder (IC) choke with Low Recoil (LR) buckshot is preferred for quicker follow-up shots. While #1 buckshot offers the best overall terminal performance, LE Agencies still prefer hardened 00 buckshot due to its superior penetration. Sales is the driving factor as to why there are not more #1 buckshot loads to choose from.
As for a shotgun, keep things simple! A lot of fancy stuff on a Home-Defense (HD) shotgun isn’t necessary! A plain-jane / reliable pump or semi-auto shotgun with a short barrel will do just fine! (SIMPLICITY … and … RELIABLILITY are the operative words here.) An open-choked 18 1/2" - 20" barrel is ideal and an illuminated front bead sight provides the fastest sight picture.
Make sure the rear stock fits you OK (shorter aftermarket stocks are available from Hogue, Remington, or Knoxx Industries). A shorter LOP (Length of Pull) stock might be needed so that things can quickly line-up (straight) using YOUR natural Point of Aim (POA).
Pattern your shotgun at the range with buckshot. Practicing with #8 target loads is perfectly acceptable and saves a lot of wear and tear on the shoulder.
Pistol grips and slings reduce your reactionary and follow-up times (They can be a liability inside the home!). Slings are useful over longer distances outside the home, but may get in the way in close quarters.
Federal’s LE 9-pellet LE132-00 load @ 1,145 fps with LR Flight Control (FC) wads offers outstanding performance in and outside the home (civilian version is PD132-00). These hardened copper plated buckshot pellets penetrate plenty and full-power loads are not needed unless your semi-auto won’t function reliably with LR shells or you need extended range in more open areas. The full-power version of 00 buckshot with FC is LE127-00 @ 1,325 fps.
http://le.atk.com/general/federalproducts/shotshell/tacticalbuckshot.aspx
For outside the home, I suggest you avoid Federal’s very soft Tru-Ball slugs due to their having significantly less penetration than LR 00 buckshot (i.e. LE132-00 or LE133-00). 00 buckshot with a FC wad is very effective in open areas providing the experienced shooter does his part.
http://le.atk.com/pdf/Shotshell_Data_Book.pdf
Furthermore, instead of the soft foster-style slugs like Tru-Ball, Brenneke’s low recoiling 1-oz. slug (Tactical Home Defense - THD) at 1,325 fps does a much better job for general purpose use outside the home.
http://www.brennekeusa.com/cms/l_tactical_home_defense.html
http://www.brennekeusa.com/cms/247.html
Finally, the K.O. 1-oz. slug from Brenneke (designed for hunting) is an improved foster-style slug and likewise a deep penetrator and good for barrier penetration. The drawback is, that at 1,600 fps, recoil is significantly stronger than the THD load (above) and is overkill for self-defense. Note: The K.O. is fine, but recoil is ………… well, you know what I mean.
http://www.brennekeusa.com/cms/ko.html
http://www.brennekeusa.com/cms/267.html
In short, Goldie Locks would say that Brenneke’s Tactical Home Defense load is just right!
Not too soft like Federal Tru-Ball and not overkill for around the home like the K.O.
P.S. The heavy 1 ¼-oz. Brenneke slugs @ 1,476 fps are used by LE Agencies (i.e. SWAT and HRT) for barrier penetration and provide the deepest penetration of any slug on the market.
http://www.brennekeusa.com/cms/fileadmin/BrennekeUSA/Law_enforcement/user_upload/Dokumente/Special_Forces_LE.pdf
http://www.brennekeusa.com/cms/special_forces_short_magnum.html
http://www.brennekeusa.com/cms/238.html