comparrison article

[Unknown]

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.

 

[Blackrifle1]

Re: comparrison article

I would like to see this comparison also. My preference would be the Grendel for long range shooting, 5.56/223 for plinking (or a 22LR AR) and a 6.8 for < 400yrds hunting

 

[Whiskey Tango]

Re: comparrison article

There's a 300 blk vs 7.62x39 in the latest pub of Shotgun News. Fortier wrote it up.

 

[DirtyDave]

Re: comparrison article

I would like to see some comparisons too. I'm leaning towards building a 6x45 AR for Coyotes. I already have 6mm bullets for my 6mm-Rem and a ton of once fired 223 brass.
I'll have to look into 6x45 uppers

 

[Gildoom]

Re: comparrison article

I just bought this magazine today at the grocery store waiting in line, pretty close to your request.

http://www.alexanderarms.com/images/articles/shooting-times-d-fortier-article.pdf

This article really has me chomping at the bit, I want both a 6.8spcii and a 6.5grendel now.

 

[Rushfan]

Re: comparrison article

Love it when they make it easy to save to your hard drive for future reference.
<span style="font-weight: bold">
Thank you for posting.</span>

I am new to .308W, Is the 7.65x51 NATO and .308W for all intents and purposes the same?

I ask because I have been told they are and want confirmation and .308 was not included in the write up.