Has anyone seen an article comparing the various rounds that can be used in the AR15 type platform? I have seen a number of articles talking about the individual rounds, and occasionally mentioning a couple of rounds, but what I would like to find is an article comparing the most popular rounds for that size platform:
5.56x45
5.45x39
7.62x39
6x45
300 AAC Blackout
6x38 (Grendel necked down to 6mm)
6.5 Grendel (6.5x38) 6.5 CSS/6.5LBC and so on
6.8 SPC
It would be interesting to see how they compare in a head to head shooting dealing with accuracy, downrange energy, recoil impulse (for shot to shot recovery), powder use efficiency, brass and barrel lifespan if possible.
I'm a fan of the Grendel, but realize there are lots of really neat alternatives that will also get the job done. I would just like to find out the benefits, and problems of each round.
5.56x45
5.45x39
7.62x39
6x45
300 AAC Blackout
6x38 (Grendel necked down to 6mm)
6.5 Grendel (6.5x38) 6.5 CSS/6.5LBC and so on
6.8 SPC
It would be interesting to see how they compare in a head to head shooting dealing with accuracy, downrange energy, recoil impulse (for shot to shot recovery), powder use efficiency, brass and barrel lifespan if possible.
I'm a fan of the Grendel, but realize there are lots of really neat alternatives that will also get the job done. I would just like to find out the benefits, and problems of each round.
