No
you cannot increase the capacity of a Winchester 140, 1400 or 1500 because the gas piston is in the end of the magazine tube and must line up with the ports in the barrel
The Winchester model 101 over-and-under double barrel made in 1963 is worth about $800 to about $1500 depending on its condition and features. The serial number of this gun would be helpful when determining value.
about 1500
Midwest Gun Works, Inc They have all the parts for this gun. http://www.midwestgunworks.com/page/mgwi/ctgy/1400-1500-online-parts
Try Gunbroker.com,or Guns america.Both may be found on the web.another source could be Numrich gun parts corp.They may be found on the web also.
This rifle was originally marketed as "The Winchester Singleshot", but is now usually designated the Model 1885. Yours was manufactured in 1892. Value will depend on it's exact configuration and condition, but the most common types in "average" condition will bring $1200-$1500.
100-400 USD or so
Check with Winchester Customer Service through their website.
Cabelas.com had 8 for sale as of this post and they were priced from $700-$1500 depending on wear. This modelshotguns were made from 1939-1958. In gauges 12, 16, and 20.
$1500
The value of a 30 WCF Winchester Model 55 takedown with a nickel barrel in good condition can range from $1,000 to $1,500 depending on factors such as overall condition, rarity, and current market demand. It's recommended to have the firearm appraised by a professional to get an accurate valuation.