posted on Jan, 19 2005 @ 04:58 PM
I would say the XM-109. 25mm sniper rifle cannon with a scope.
As far as I understand this is more of a Grenade Launcher, so not a Anti Material Rifle in the traditional sense...
I know of these Anti-Material and Special Purpose scoped rifles:
M82A1/A2/A3, the most famous Anti-Material Rifle, .50BMG
XM107, Lightweight version of the Barrett
XM109, the 25mm version
OSV-98 12.7mm Anti-Material rifle
Some others have been made too but this was one of the few that was actively used.
Gepard series, ranging from .50 NATO to 14.5mm Russian.
NTW-20 super caliber 20mm Cannon
Ofcourse there are many more, some can be seen on:
Which is the best? I'd personally go with a Barrett since it effectively reduces recoil to an acceptable level comparable to a 12ga...