Thanks for the compliment,Demi.
A coupla things....
First, I know directly of no cases where a heat shield rendered a shotgun inoperative. I have heard second-fifthhand of a 590 having probs, but I tend to doubt info so remote.Obviously, in the high volume use environment you have on Mondays, the heat shield is useful. But how often in the real world do we(as private citizens and members of the militia) have to fire off hundreds of rounds of shotgun ammo in a short time frame?
If I were firing hundreds of shotgun rounds in a short time frame during a crisis, I might want a heat shield. However,I'd want an M-14 even more. IMO, shotguns are not top line battle tools like say, that M-14, a Kalishnikoff, or a FAL. Note that those all have something that protects the user from bbl burn.
For a real WIHTF situation, I see the shotgun as an excellent tool for HD, picket duty or a WOC for a point man in thick cover.
Same for a sling. Absolutely necessary on an all round weapon, it's just something to snag with on a HD piece.
Here's what I regard as absolutely essential on a HD shotgun, one that can double as a tool for a militia member also. That means it can be used by a citizen helping to protect his/her community and country.
It has to be absolutely reliable.
It has to be of a weight that the user can not only handle, but move with it sans excessive fatigue.
Length likewise. We don't fight in phone booths, but a weapon that can be utilized in a hallway is close to optimum.
It has to be powerful enough to neutralize an opponent instantly. All shotguns do this. But, it has to be capable of near instantaneous re- employment on another opponent or opponents. Not all shotguns nor shotgunners can do this.
It has to have a sling.
It has to have an easily controllable but safe trigger, in most cases 4 lbs or less.
It has to have a stock that fits the shooter. That means he/she can be firing effectively and quickly, with a good weld,etc.That stock should also have a good pad.
It has to have sights that acquire quickly, work in low light, and are slug capable. For most folks,a plain bead will do for HD, but a good peep or GR set is better.
That's the basic weapon. I'd like it also to have 8-10 rounds aboard,and a light.