Originally Posted by
SJAdventures
The Barnes TMZ did not group well in my ProHunter until I went to the yellow cr but it does have a tight bore..
TC bores are characteristically tighter the GM barrels, especially the newer TC bores.
I believe the Yelow CR built for Barnes is the same as the Regular Harvester Black CR.
Their newer CR is a red one but it is built for larger bores,