I think i may have found a brno 375H&H mag barrel for sale.Its not a 400H&H i know,but maybe its a better alternative.The barrel is 22inch without sights.I dont know if there is any difference in the bolts between 300wm and 375H&H mag?The rims look to be the same size. Is there going to be any work needed other than fitting the barrel and headspacing it?Is the magazine going to need work?Thanks for all your comments and advice fellas,I will end up with a 416 rigby one day,maybe not this year though.