The following are my favorite 12 Gauge pump action shotguns.
Above is the Remington 870 Express Tactical
Above is the Remington 887 Nitro Mag
Above is the Mossberg 500 Defender
Above is the Mossberg 590A1
Above is the Mossberg 835
Above is the H&R Pardner
The following are my favorite shotgun accessories.
Above is the Pachmeyer Decelerator Medium Slip On Recoil Pad
Above is the ATI Sidesaddle which can be mounted on the stock
Above is the Tac Star Side Saddle which can be mounted on the receiver
Above is the Blackhawk Single Point Sling Adapter
Above is the Blackhawk Single Point Quick Detach Sling
Above is the ATI Heatshield which can be mounted on the barrel
Above is the ATI Flashlight Holder which can be mounted on the tube
Above is the Surefire G2 Flashlight
Above is a box of Olin Winchester Military Grade 12 GA 2 3/4″ 00 Buckshot
Above is a box of Remington 12 GA 2 3/4″ 7.5 Birdshot
Above is a Molle Saw Pouch for Shotgun Shells
rmactsc 
Suggestion: Alternate your 12 ga. loads, slug/00/slug/00, anyway like but always one-and-one. This is how police shotguns are loaded for maximum stopping power of a lethal opponent.
Excellent suggestion. Thanks for passing it along.
No problem-o.
Do you practice a tactical reload drill?
My reload drills consist of the following repetative drills. 1 – Quick and accurate change of mag drill for rifles and handguns. 2 – Clearing malfunction drill all weapons types 3 – Weak hand loading in event the primary hand is injured drill all weapons types.
Good drill. I suggest, the next two times at the range will be dedicated to weakhand shooting.
I am ambidexterous. I can write with both hands and it looks the same, in script. I can throw and catch with both hands. Same with shooting. Most people do not have this ability, so practice. Tactical reload with shotgun is an absolute must. Hopefully you count the number of times the weapon goes bang, so it will not go click, when you need it most, per Murphy’s Law. On the pump guns you show, with the last round chambered, keep the shotgun shouldered and right hand on the pistol grip/trigger, or practice with finger off the trigger until you get the hang of it. With your left hand, while looking down that barrel at the threat, feed shells into the magazine feed tube. That is a tactical reload with the shotgun. If possible, also get off a few rounds while holding the shotgun one-handed like a pistol. Use right, then left hands. Train your muscles.
Do you have an M48 tomahawk or something for mano-a-mano? If so, buy another less expensive item and train with it. Even a hammer handle, just to get your muscles and hand/eye coordination going. All firearms must be shot as a natural extension of yourself, so practice. Look at the target. Keep your eyes on the target. Draw on the target and fire without using your sights if possible.
Anyway, you get the point.
You are fortunate to have ambidextrous skills. Yes I do have the M48 hawk and I highly recommend it. For the price it is an excellent bladed weapon. Excellent suggestions on range training methods as well and I will be sure to incorporate them into my training time at the range.