I know it is a long shot but I just purchased a used 25 Bullberry barrel this weekend at a show.  Thanks

 

wcp

Saved by the Grace of Jesus Christ, USAF Retired, Viet Nam Vet, Retired Texas school district (technology service & support), NRA Life member, Certified Air Frame and Power Plant Mechanic, Reloader since the early 1970's, Dedicated to experimenting & launching all kinds and calibers of Cast bullets, Camping Hunting and Fishing in my spare time.