ooooohhh thats approximately 210 pounds of bronze

at $ 8 per pound

merry christmas
where is that barn located

maybe there is some more

ok serious again ,
TELL YOUR FRIEND TO SAVE EVERY CHIP HE MAKES FROM THOSE BARS ,
without mixing it with any steel scrap
it will be more then enough to melt and cast the piece of 2 inch bar he need for the trunnions ,
and then he will be sure to have the same color of the bronze also .
and for free , just a few bucks to the local blacksmith .
that could any local blacksmith do for him ,
just make an mold of plaster of paris .
just take an 2 1/4 inch dowel and grease it with a little axle grease before you pour the plaster .
when the plaster is hard turn the cowel carefully and pull it out and you have an finished mold for the bronze bars .