Looking for info on John Kavalkovich barrel or rebuild

[OBXEJC]

Newbie to this site, I picked up a S.A. 1903 serial number 884679 that had been sporterized with a beaver tail stock and a bull barrel, glass bedded, Redfield International sights with a Canjar trigger. The barrel is stamped John Kavalkovich 30-06 3-58. My question is:

Has anyone heard of John Kavalkovich? I'm wondering if he made the barrel or put the rifle together. It has a 1990 Camp Perry sticker on the side of the stock and I'm hoping someone on this board has come across this person or this rifle.P1020516..jpgP1020517..jpgP1020520..jpgP1020515..jpg

[Stephan]

he probably built the rifle and stamped the barrel with the needed particulars...builder and caliber