When the bar was first made in 1967,the rifles were not made in 257 Roberts.They were made in 243 Winchester,because of the popularity of that cartridge which made the 257 Roberts pretty much overlooked.
The Suffix of M8 to the serial number dates your Browning BAR to the year 1968.
60-600 usd
It was made in 1968
No
@7.5 lbs
No. This is a .22 caliber vs .243 caliber (.243 being a 6mm).
Both the BAR (Browning Automatic Rifle) and the Browning machineguns (series 1919) were made in caliber 30-06. HOWEVER, there were other calibers manufactured for special markets. Search Wikipedia for BAR, and look up some of the secondary calibers- they may be a surprise.
Depends on the condition and if you have the original box.
The weight of a browning BAR II is 7lb.6 oz.empty,the weight of the magnum caliber rifle,s were 1lb more.The browning BAR II was not produced until 1993,so you have a browning BAR first model.The weight is the same for both model.
.243
$600-$700.