They probably denote what choke the barrel has.
I have no idea what you mean. Every Remington shotgun ever made was designated as a shotgun, and had a model name or number. If you clarify your question, maybe someone can help.
It's a model designation that Remington uses, i.e., Remington 11-87.
Did you a mean Remington SPR220? Remington SPR220 is a side-by-side shotgun. You can get a schematic of this fine shotgun from down loading the owners manual from Remington. Kathleen
Could be an inspector's mark, assembly mark, etc..
I don't see dbl in Remington, if you mean the dbl in general when when referring to a Remington firearm that's double as in double barrel shotgun, derringer, etc.
Remington does not show a 870 rifle on their web site. Do you mean the 870 Shotgun? the Remington 870 is one of the most popular shotguns in the us. this shotgun ranges from $300 for the basic model to $1000 for the fancy Wingmaster edition
The 1100 designation for a Remington shotgun is the model number. Remington makes the 1100 model in a trap version and a field version.
If you mean the two barrels are separating from each other, then the solder joining them has failed. A good gunsmith can repair this. If you mean the barrels are "unraveling" then you must have an old twist-steel barrel that has been over-stressed and it cannot be repaired.
It could be the maker of the shotgun, the name of the store that sold it, the name of the person who made the barrels, etc..
The expression refers to a double-barreled shotgun. To "give (something) both barrels" is to make the maximum effort at the task. ie. use both shotgun barrels. It is similar to the expressions, "give it your all," "go all-out," "one-hundred-and-ten percent," and to give something "...the whole nine yards."
$20.00 to $300.00. I don't mean to sound sarcastic, but condition is everything.