Ok so I will start off by saying I have one of each. The .308 is a federal arms FA91, the other is a 7.62x54 mosin nagant. It may be worth noting the inner workings of the .308 has been changed out with H&K parts. I do not really have the range to test them out, hence turning to you guys. So I am looking to find out 2 things. First do they make a rifle that fires the 7.62x54 other then the mosin an the dragunov? Something a little more accurate? The other is how do the 2 rounds match up. What it comes down to is I want a mid to long rifle, thats not a .50.