Headstamp ID help

I picked up a few rounds of ammo at a pawn shop, but I cant Identify the caliber or headstamp origin. I collect different calibers of ammunition as a hobby. Any help will be appreciated.

This is a comparison to a 7.62x51mm NATO round

That is a Chinese made 14.5x114 dummy cartridge.

Thank you

41 is the designation of the (unknown) Chinese production-factory while 74 the year of making is. Yes, 1974.