In answering this question you must consider what type of rifle it is (anti-personnel, anti-materiel, hunting...) as different types of rifles have highly varying calibres and configurations which would acutely effect its killing potential or armour piercing capabilities.
With that said the most powerful (current production), anti-materiel rifles which I know of include;
- MECHEM NTW-20 (by Denel from South Africa)
- 20mm TAKE-DOWN Rifle (by Anzio Ironworks from North America)
These two rifles are both chambered for the 20mm round (20x80mm and/or 20x110mm) which is exclusive used by various military and police bodies for anti-materiel purpose only. Anti-materiel rifles primarily used to hinder enemy activities by damaging or destroying their resources and defense systems. These resources and defense systems includes (but is not limited to);
- fortified bunkers,
- light armoured vehicles,
- machine gun placements,
- military installations (communication systems and ordnance stores) as well as,
- stationary aircraft.
It must been noted that these 20mm anti-materiel rifles are also classified as cannon/artillery weapon systems.
In terms of anti-personnel rifles, one of the most noted is the Arctic Warfare Super Magnum (also known as the AWSM or AWM) produced by British Accuracy International. This particular rifle is chambered for the .308 Lapua Magnum round. The .416 Barrett round which can be used in various Barrett rifles can be seen as challenger to the .308 Lapua Magnum round.
The .50BMG round is primarily designated to anti-materiel rifles with a secondary anti-personnel classification.
In terms of hunting, especially big game or large animals, the .700 Nitro Express round is definitely one of the most deadly commercially available. Apart from having a very large and heavy projectile, the unique explosive compound mix used to propel the projectile is more explosive and volitile when compared to conventional mixes, and thus is more powerful. There are custom order rifles from several manufacturers that produce hunting rifles which handle the .700 Nitro Express round. The 4-Bore round previously spoken about would definitely be more powerful than the .700 Nitro Express.
It must be noted that any calibre greater than the .50BMG (12.7mm) which is used in rifles such as the Barrett M82 Series, would be widely argued as overkill (easily) against enemy soldiers, let alone the 20mm anti-materiel rifles stated above.
20.00 milimetres = 0.787 inch (20mm)
17.78 milimetres = 0.700 inch (.700NE)
12.70 milimetres = 0.500 inch (.50BMG)
10.57 milimetres = 0.416 inch (.416 Barrett)
7.823 milimetres = 0.308 inch (.308 Lapua)
Please research further for more information.
Cheers,
Gunn
Comments
Then there is the Lathi 20mm anti-tank rifle that some were smart to buy before the Gun Control Act of 1968 made it impossible.
by CannedHam on March 29th, 2007