$139.95
i am pretty sure they are 3" You can shoot 2 and 3/4 in.shells in the 1100 3"mag but, the shot weight has to be at least an ounce and 1/4 for it to cycle {fire,eject and chamber the next shell} properly.
It will fit on the frame but the action will not function with 3 inch shells.
Generally when someone says 7 mm they are referring to a 7 mm Remington Magnum. There are several other 7 mm chamberings but 7 mag is the most popular in the US.
One inch = 2.54 millimeters (mm), therefore:5 millimeters is approximately equal to 1.97 inches.Many items are of this measurement, ranging from rings(jewelry) to LEDs to obsolete bullets for Remington Rimfire Magnum cartridges.
3
You need to contact Remington for an answer.
$350
Remington 870 Express Super Magnum.
100-400 USD
100-400 USD depending on condition.
The average price of a Remington 870 Express Magnum pump 12 gauge shotgun "brand new" is about 300-450 dollars. I got mine used for $250
@ 50 USD
1971
in my area u can buy a new one for around $325
$200
500.00
Your Remington express magnum shotgun will range in price from 180-350 dollars,depending on the overall condition of the shotgun.These prices reflect between 60%-90% of the original finish,and a good bore.