.20 Caliber ?? Shadow

I was wandering around and found this, 24 bucks per barrel, he has 48 of them.

Premium Walther .20 caliber Air Rifle Choked Barrels. YOU ARE BIDDING ON ONE BARREL!!! - These barrels are in the raw from the Walther factory, they need to be machined to fit any airgun - These barrels were bought for the Benjamin HR-81 which was discontinued. The original price of the barrel was around $50.00 - 1 in 14 rifling twist - 19 3/4 inches long - diameter is .630 - barrels are capable of shooting one hole groups at 50 yards - Insured shipping is $10.00 for any quantity to all 48 states USPS, elsewhere additional. Barrels have been kept in a heated warehouse. Check or Money Order only--no credit cards or paypal - Thank you.

Link to auction.

http://www.auctionarms.com/search/displayitem.cfm?itemnum=7458401&aa=%20%20%20Premium%20.20%20cal%20Walther%20barrel%20in%20the%20white


 It might convert one of my shadows to .20 caliber. A fair amount of pellets can be found in .20 cal.  

Anyway I bid on two barrels so I can find out if a .20 Shadow is a killer combo.

[nmmike]

Hey Rich from Mich:
NMMike here. Ya run into people in the darndest places. Hope all is going well with your CFX & S1K. Sorry, I don't have any input on yhe barrels.
NMMike