Many places. Try the barrel exchange. Keep shopping online at the gunbroker.com and other gun parts outlets. Also Midwest gun works http://www.barrelexchange.com/ http://www.midwestgunworks.com/page/mgwi/ctgy/browning-auto-5-barrels
It will have to be custom made.
No
Yes
check the date code stamped on the barrel. Remington Society of America, Manufactured Date link has the details.
What are the other markings on the barrel? Does the serial number on the bottom of the barrel match the one on the reciever? sales@countrygunsmith.net
Go to http://www.browning.com/customerservice/dategun/detail.asp?id=13 The SN you list does not conform to Browning's pattern. Without age, value will be difficult. Does it have removeable chokes? What are the markings on the barrel. You are in an extremely broad range of 200-1200 the production year on that serial number is 1967. the value would depend on the condition of the gun and if the barrel was the original barrel or not.
The Browning 2007 Product Catalog states that the A-Boltchambered for 25WSSM with a 22" barrel has a 1 in 10" rate of twist.
50-575 usd
If it is a Browning Superposed 12 gauge it was made in 1959.
Made by Savage for sale by Western Auto. Best I can do ... hope this helps.
You will have to contact Browning to find out. If you are referring to the run of Browning model 71's that were made between the mid to late 80's and early 90's, there were a total of 14,000 made. 4,000 Standard Rifles with a 24 inch barrel. 4,000 Standard Carbines with a 20 inch barrel. 3,000 High Grade (Deluxe) Rifles with a 24 inch barrel. 3,000 High Grade (Deluxe) Carbines with a 20 inch barrel.
Requires professional appraisal