So to answer Jimichangas question if the shells fall out of the triple threat receiver, the answer is yes to a certain extent.
Like I initially thought the 3” Remington 00 Nitro mags were to hot and expanded too much to fall out of chamber on there own after fired.
So I went today to sight in the SigSaur red dot today and test my theory on the 2 3/4 slug shells falling out on there own.
And sure enough they passed with flying colors.
So to point out I thought the top center barrel shot first it does not.
It most likely is L,R, Center. I left the bottom two cylinders with the spent 3” Nitro mags, because I mainly was trying to dial in red dot with the slugs.
So these are tactical 2 3/4 flight controlled rifled slugs.
I got the red dot dialed in at around 5 rnds it was pretty close the first shot.
But then it seemed to drift to the left a hair. I could not get it to fully tighten up,the sight is one of sigs older ones , a way older red dot. Not sure if it was it or the pic rail on the shotgun itself, it def is not a mil spec rail on shot gun, I suspect it’s the rail on shotti, something to consider.
So I just removed it and went off front fiber optic sight.
I was aiming directly in the center of Red circle at 10 yrds and it was tracking pretty high.
But never the less, the results would be devastating! All rounds would be fatal to say the least.
I shot about 18 rounds of slugs and I could not shoot anymore, it was brutal. But I forgot a trick that helps with taking half the impact on your shoulder when firing.
If you lock your left arm out holding the forearm of shotgun it will take a lot of the abuse out of your shoulder. If you have not tried this it really helps on recoil. But I will say like the Benelli’s the length of pull seems to be a little long about 1’’ to long, not helping shoulder.
Now my take on coach guns, it’s an intimidator and a deadly one. Great truck gun if you ask me, is it for multiple threats maybe but I think your odds would deminish fast if your attackers are armed and more than two.
If you were staring down these three barrels I think you would turn white as a gost and re think your poor choices you just made.
I can’t seem to upload videos of shells falling out of receiver and 10 yrd verification.
On further inspection it looks like it was not SigSaur’s red dot that was the issue with holding zero. It seemed to be the pic rail screws backed off on the shotti, they had no lock tight on them and the rail was very loose !, and yes I said Philips head screws and not torques heads !
So blue locked tightened the screws and re torqued back down and re installed red dot and it’s solid again. My apologies to Sig, it may be a tall order for a red dot to hold up to this kind of abuse.
So I will go out next weekend and try again and see how it holds up. I may find number one cylinder put the open choke in it for the slug and then see what patterns the next two cylinders produce with the buck shot loads.
I’m starting to really not dig public ranges anymore, look at the guy letting his newbies shoot his AR, head shots owner and friends on the rest of the target. Un nerving !
Walking in, two door system at range in center guys giving instructions with his pistol out to friends on how to handle pistol, you can’t make this shit up.
Thank god they monitor these yo yo’s pretty good with cameras threw out range, undercover range officer was on dude with pistol pretty quickly.
Just for the record the bag was for the red dot.
This target was free standing at 10 yrds.
....I know that now is probably the worst time to try and sniff out such a shotgun, but I figured some solid advice from members would always help if I stumble across one. Wanted to keep it under $1,000, and exposed hammers would be extra cool unless those are just superfluous...No plans for any cowboy action stuff, would be recreational and something to impress my friends who all quit visiting me many years ago.....
...as always I would welcome advice and personal testimony from members. 
