SR-25s cost way more than M-24s even M24s newly chambered in .300 win mag. I’m a fan of the .300 personally. I think the extra range and energy will come in handy and; furthermore, in my own personal experience, the Army cares not a bit about barrel life.
the Army cares not a bit about barrel life.
Yes they do. This ammo doubles if not triples the LCC of the rifle. The only advantage is an increase in bullet stability between 800 to 1,000 meters. Number of combat shots at that distance - can be counted on one hand. Its a bad trade, particularly with real cuts coming to defense. Stay with what works and can be afforded.