300 AAC

[bedlamite]

Let's compare the 300 BLK to the 5.56. A 125 grain bullet at 2200 fps has more power and shoots flatter than a 224 62 grain bullet at 2950 fps.

You might want to double check that. In no way does the 125gr 300bo shoot flatter than the 62gr 223. in fact, the drop of the 300bo is almost double.

 

[Lark]

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi
I used a BC of .151 for the ss109 on the above calculator. That is what I shoot in my 5.56. It gives a drop of 104" at 500 yards with a flight time of .98 seconds. I used a Sierra 125 gr with a BC of .338 for the 300 blk. That gave about a 93" drop and .93 seconds flight time.

I can't find any Berger .224 62 grain bullets listed on their website. I used a 600 yard zero for my calculations in the previous post, but I know that bullet BC makes a huge difference.