Yes, but an easier method would be to sprinkle salt onto the slugs.
Yes.
175-350 USD
It means you have a Mossberg Model 500a shotgun with the serial number L109563.
50-250 or so
The best way to find the age of a Mossberg 500A Shotgun is simply to call the company's customer service line and have the serial number and model number handy. Mossberg has yet to publish a list of their serial numbers in relation to the dates of manufacture.
Try e-gunparts.com, gun show, gun shops, want ads.
No
All.
If you have a 500, and it is a 12 gauge, it is a 500A. The "A" designates it as a 12ga. A 500B is a 16ga, a C is a 20ga, and an E is a .410.
It can be, if you are using a slug
You will have to call the company to find out.
Yes, it is. The 600AT was simply sold under the New Haven name instead of the Mossberg brand. It's a Mossberg 500A (12 gauge) intended for targets and hunting (long barrel and great wood). All Mossberg 500 parts fit it.