I'm curious, when you read explanations like inSight-NEO's, do you see them as de facto arguments favoring handguns for HD?
At the risk of "hijacking" this thread (not my intention), I have to say that it was not my intention to question the use of the shotgun as an HD weapon. I was merely pointing out why I believe long "hunting type" barrels are not necessarily the best choice when it comes to CQ situations.
But, in regards to your posted question (to another member), I personally am still internally debating on which weapon I would grab first during a potential HD encounter...the shotgun or the .45 ACP.
However, I am somewhat beginning to adopt the belief that the shotgun, as powerful and intimidating as it is, just might be best used for the "come and get me"/barricade/back-up type situation(s), while the handgun would be best for the "search and destroy"/quick grab/mobility sensitive type situations due to the fact that handguns are simply lighter, "faster," and more "maneuverable" vs. the heavy and somewhat cumbersome shotgun (yes, even those with shorter HD barrels).
Of course, there are many other things to consider which may have an affect on which weapon would be most appropriate, such as dwelling type (house, apartment, etc.), the layout, size and location of such a dwelling, time of day (situations/mindset can vary depending on such a factor), shooting ability (are you better with handguns or shotguns?), etc., etc.
Anyway, enough about this. To the individual who started this thread, as I mentioned before, cutting your Wingmasters barrel down to "HD" length would be regrettable. Just go out and buy a nice 18" to 20" barrel for HD and enjoy the fact that you now have versatility and most importantly, no regrets.