Though some sporting .223 Rem. production rifles still have slow-twist barrels, most gun makers have adopted 1:7 or 1:8 to accommodate a wider variety of bullets. Because traditional twist rates are ...

For illustrative purposes. (Janes/ Amael Kotlarski) Heckler & Koch (H&K) is currently developing a 5.56×45 mm version of the HK421 light machine gun (LMG), which is currently chambered in 7.62× ...

Though some sporting .223 Rem. production rifles still have slow-twist barrels, most gun makers have adopted 1:7 or 1:8 to accommodate a wider variety of bullets. Because traditional twist rates ...