1905 ross with rear pilblad target sight

i have forsale this 05 ross  rifle with the scarce mk v pilblad target sight it has  a 28 in barrel with strong rifling   it could be a replacement  i can t see any cal stamping it is 303 brit  its  common to change barrels on target rifles when they get slightly worn  asking  650.00 plus shiping        note  there is no stock with this rifle