These rifles were made in the late 70s and early 80s. They did not sell well and were over priced. The later ones were made up from parts and were a little rough.
The early ones were Browned metal or Brass. They were cut in .45,.50,.54 Cals. The early ones had Biss Titus barrles made in Heber City Utah. The later ones were what ever they could find. I think the stocks were made in the wood working shop at Morgan, Utah.
They looked good. But after most folks found them to be poor shooters the sales dropped. They were sold thru all kinds of surplus programs etc.
Browning had an auction in Ogden, Ut. years ago and sold off what was left of the parts. And so was the end of just another so so production M/L.
The BMR has some followers but as a shooter don't expect too much.
As a collectors item they made a number of these for the Morman Church. They were numbered and sort of fancy these go for over a $1,000.00 usally.
The book that came out with the rifle as I recall stated the load for the .50. The load stated was for a .495 ball with a .020 patch Most of these guns had loose bores.
As I live near the Browning HQ in Morgan, Ut. I have seen and shot many of these rifles. Yes some of them were OK mostly they were not . Near the end we were buying these for about $75.00 so everyone had a BMR.
The stocks had to be fiberglassed if you shot a lot of heavy loads or the barrels would get loose in the channels. :hmm: