AR15.Com Archives
 .224 Hornady 75 Grain A-Max Questions
Glockhappy  [Team Member]
8/1/2009 3:00:12 AM
I am trying to decide if it is worth it to change from 69 grain Sierra HPBT to 75 grain Hornady A-max. Having studied the ballistics I am seeing that 75's have an advantage at 800+ yards, but not much until then.

For my questions-

1. The Hornady manual says that the 75 grain A-Max can't be loaded to the 2.25" COAL that fits in AR mags, yet Sierra seats their 77 grain to 2.25". Can 75 grain A-max be safely loaded to fit in an AR mag?
2. What is a realistic velocity expectation from a 20 inch AR with 75 grain A-max loaded with a appropriate powder in a package that gets good accuracy?
3. What is your opinion of this bullet? Have you had good luck with these?
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ALASKANFIRE  [Member]
8/1/2009 3:12:24 AM
You might want to ask in the reloading forum as well but I think your data is correct.

The HPBT can be loaded to mag length but not the amax
rundm  [Member]
8/1/2009 6:26:25 AM
the amax is a good bullet. it is very long. I do not know what the velocity is because I did not run them over a chrono. I used to shoot them out of my colt 6724 with 24 in barrel and had good luck with them accuracy wise out to around 300. Do not know what they would do past that but I imagine they would be pretty good. can not see how there would be much diff between a 24in barrel and a 20in velocity wise. again, that was a long time ago when I was shooting those. I stopped mostly because I did not like single loading them. at one time, I thought they made mags that you could actually load a couple of rounds into without single loading them. I could be wrong though. Maybe Sinclair International or some comp of that sort.
FC1982  [Team Member]
8/1/2009 8:22:53 AM
I personally couldn't load them to fit an AR mag. The "ballistic" tip just wouldn't allow it.
Market_Garden  [Member]
8/1/2009 9:52:19 AM
Here's a pic from 6mmbr.com you can see the SMK 77 is shorter than the AMax 75. I have also heard from many sources that you can't load them to fit in an AR magazine. I'm using them loaded to 2.49" in my 700.
meterman3  [Member]
8/12/2009 10:55:52 PM
ON YER ? NO THE 75 A-MAX CANNOT FIT AR mag this bullet has a long taper have tried but will load for a bolt have shot and man it is accurate
thanks
mac
Brander  [Team Member]
8/13/2009 12:37:44 AM
If you are going to use the 75 A-Max in an AR, then you have to single load. It is one of the most precise bullets I've used (with Varget), especially for the price.
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