A look at FN’s 6.5x43mm Irregular Warfare cartridge
The highlight of 2025 for me was FN UK inviting me to shoot @FN_America ‘s new IWS rifle, chambered in 6.5×43 mm LICC. At 18 grams, this is a true intermediate cartridge in size and weight, yet delivers performance in excess of 7.62×51 mm. The bullet is still supersonic at 1,000… pic.twitter.com/Bfm7GpMNp7
— Nicholas Drummond (@nicholadrummond) October 8, 2025
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About the Author: NC Scout
NC Scout is the nom de guerre of a former Infantry Scout and Sergeant in one of the Army’s best Reconnaissance Units. He has combat tours in both Iraq and Afghanistan. He teaches a series of courses focusing on small unit skills rarely if ever taught anywhere else in the prepping and survival field, including his RTO Course which focuses on small unit communications. In his free time he is an avid hunter, bushcrafter, writer, long range shooter, prepper, amateur radio operator and Libertarian activist. He can be contacted at [email protected] or via his blog at brushbeater.wordpress.com .
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GUNS N GEAR
It IS very interesting. P=M*V Mass time Velocity. If you increase the velocity by 50%, you can reduce the mass by 50%, and get the same impact on target (momentum in this case). So all these ‘new’ cartridges that shoot super-flat like the .270 take a tiny bullet and back it up with a shit-ton of modern smokeless powder.
Great! Keep the new stuff coming.
I’ll still take a 30-cal carbine over any of the new rifles they come up with. Tried, tested, true. It puts the meat on the ground, 4 or 2 legs.