Like mentioned before the f-class and ftr barrels are very heavy. Making a rifle 15 to 17 lbs. Too heavy for my tastes to take hunting.
How many do you want? I have quite a few. 6mm, around 20"-21", LV contours, all well known makers, all tight neck 6ppc, $75 each plus shipping. Usually around 1000 rds fired. Good for re chamber to 6br gopher whackers.