You sure this isn't an EJN 757 instead of a JEN 757? I have a EJN 757 in 3006 and would also be interested in any info. for this rifle.
It will be marked.
No.
$1000
I'm not quite sure about the 3006, but I know that the longest recorded kill shot with a .308 was at about one and a half miles, possibly more.
100-340
Assuming a Grade I Condition is important: NIB EXC V.G. Good Fair Poor 650 450 375 300 250 125 Belgian manufactured rifles are worth about 15% above these prices. Grade II and III are higher. $250 and up
codey
50-500 USD or so
100-400 or so
100-500 USD
100-10000 USD depending on specifics.