I have an Ataman M2 .25 caliber rifle, and am looking for someone that can duplicate my barrel with a Lothar Walther polygonal non choked barrel in same caliber to shoot slugs. I haven't been able to find anyone out there that can do it (as of yet) but have been given the name and number of guy (Alan Zasadny) that can, but have no way of getting a hold of him. Any help would be appreciated, thank you very much! By the way, it is a .250 diameter barrel.