Thanks! Glad I'm not the only one nerding out over cartridges haha. At 500 yards my 18 inch 5.56 with the 75s are boringly easy to hit shilouette with. Energy drops below 300 ft/lb at that point so I wouldn't want to shoot any living thing past that range ... But I'm thinking I can push it quite a bit farther. Going to try 750 yards this week.@Squid556 great write up bro! When I was building my match rifle, I spent hours researching 6mm, 6.5mm, 6.8mm and wow was in information overload......as I balanced this & that of each cartridge vs the 223/556 it was a daunting task, as I was talking to other competitors, I heat hearing, 223 components are easy to find , priced decent and all the ballistics are a known formula, now that being said my 77 grain load will just flat hammer at 600 yards.
As I look into building a "Palma rifle " the great cartridge debate has started oll over again.
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Also, whats that device on the end of your rifle?