.300 Savage is a great cartridge......I have a .300 Savage rifle I've never shot. If you want a rifle in that caliber, look into a Remington Model 81. It's JMB's companion to his Auto 5 shotgun, same recoil operation.
I have a BARSIK red dot sight myself, came on an upper I bought, haven't tried it yet, but the seller liked it.