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Originally Posted by SavageEagle  appreciate it. So it sounds like a 5.56 would be a better choice chambered wise. And I would be right to assume the 5.56 would have greater range and knock down power? |
The 5.56 chamber will allow you to fire essentially any commerical or military cartridge in .223 Remington and 5.56 NATO. That would be the better choice. As for "KO" power, the difference between the two is only chambering. There is a difference in pressure, however, the velocities can be almost equivalent with the right commerical loadings. So in summary: Yes there is a difference with 5.56 NATO loadings (not just chamberings) being technically more powerful, but everything varies upon ammunition manufacture and type of bullet at the end. Which is more powerful doesnt come into the equation. Similar arguement is which is more powerful: 9mm Luger or 9mm NATO? Same round, one is loaded a little hotter, but either can be equal with appropriate loadings from many many factories.
Realistically, for a beginner user, just stick with a 5.56 chamber and fire anything cheap that is .223 or 5.56. As for which one is more powerful, that is always debated along with which is better 9 or 45? Wouldnt worry about it at this juncture.