New guy recipe help

[markslyon]

I'm brand new to reloading and I'm unable to find a recipe for the following:

I was told by Hornady that the max overall length for an AR is 2.250 to accomade the magazine

This is what I have:

Winchester Ball Powder 748

Hornady Match 75Gr BTHP

.224

Remington small rifle primers

Remington new unfired brass

The question is how much powder? The recipe I have in my book shows the OAL to be much larger than the max for an AR. Where can I look for this information or does anyone have it?

[sequoia_nomad]

I was unable to find any data for a bullet that heavy with 748. I would recommend a lighter bullet, 75 gr. is pretty heavy for a common AR barrel, unless you have a fast barrel. For future reference, here is a good site with lots of data for Hodgdon, IMR and Winchester powders: http://data.hodgdon.com/main_menu.asp I'm sure you will find it most useful.

[markslyon]

Thank you very much. M6A3 with a 1/7 Barrel is what I'm shooting so it should throw the round well.

[sequoia_nomad]

Maybe this will help, it refers to your question exactly:

http://www.calguns.net/calgunforum/showthread.php?t=94097

[XDRoX]

That's not going to be easy data to find. I don't have any. By using my extra sensory extrapolation skills, I think 24gr would be probably be a safe starting point. But if you blow yourself up don't blame me

I used 25.1gr of 748 with 55gr bullets and it's works really well. Kind of dirty but meters like water.

Good luck in finding data.

[markslyon]

That last link had some great data! Thank you so much guys. I'm going to load a min load per the Hornady specs and see what happens.

[XDRoX]

Maybe this will help, it refers to your question exactly:
http://www.calguns.net/calgunforum/s...ad.php?t=94097

For the record I did not see that link before I typed my post, and according to AR15barrels, 24gr should work fine. My extrapolation skills are working well today

[markslyon]

Everything was going great until my brand spanking new press quit auto indexing all the way. Apparently I need to be calling Horndady or get someone more experienced to look at my setup. Of course now there's powder and torn up primers all over.

[freonr22]

is it froze? or?you can pm if you choose

[XDRoX]

There are adjustments for the indexing at the bottom of the press. Just adjust them a little, it'll fix it.

[markslyon]

Thank you Paul for helping me make the indexing adjustments. Took 5 minutes an got it worked out!

[freonr22]

sorry I talk so much