I thought it's ok to shoot 308 in 17S, but I was corrected by the guy at my LGS saying SCAR will go KaBoom if I shoot 308. He is wrong is he? I know 308 feeds fine both FAL and M1A.
He claimed he has so many buddies in Marines and other badass units, and no one likes the 17S. Lol.
I believe it is:
308 can be shot in any 7.62 rifle
308 rifles can only shoot 308, 7.62 will be too hot of a round and can cause a kaboom in a 308
RadScorpius, you should go back to the LGS, and in the presence of the clerk, call FNH USA and ask them.
What I understand is the opposite, the .308 Winchester is loaded to a higher SAAMI pressure than the 7.62x51 NATO. Generally speaking though FN Herstal is well known for the quality of their barrels and I would venture to guess they designed a safety margin into the Mk17/SCAR 17s barrels. As for the USMC carrying the Mk17, that should be taken with a grain of salt, the 75th Rangers were the first to carry and they were issued the Mk16. I'm not sure if MARSOC has even been issued SCARs. I qualify the aforementioned with this nifty disclaiming acronym, AFAIK. I have been wrong before and anticipate being wrong again in the future how near a future I cannot say at this time. Ain't living and learning fun? :?