Before I got out and buy a new book wanted to know..

Looking at 9mm, 556, 300 aac and such subsonic loads.

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556 subsonic eh? Any reloading book that lists 147gr 9mm will show you sub data.


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Not much in the way of subsonic .223 loads in loading manuals. Most won't cycle the action in an AR, so you'll have a straight pull bolt action. Here is load data on trailboss, the most fool proof subsonic powder out there.
http://hodgdon.com/PDF/Trail%20Boss%20R ... %20R&P.pdf

As for 9mm, 147gr is almost exclusively subsonic. Easy to do for 115gr and 124-125gr loads though, and most if not all manuals will have subsonic load data with bullets weights of 115 and above.

For .300 AAC blackout, very few manuals carry any load data for the cartridge, especially subsonic. I have Speer, Nosler, Hornady manuals, all recent, and none has all three items you are looking for.

A great resource is this site.
http://www.hodgdonreloading.com

Sierra has lots of .300 AAC data here.
http://sierrabullets.wordpress.com/2013 ... -gas-tube/
You'll want to buy some A1680 if you have a mid or carbine length gas port AR. You can try others, but theyll give you fits and won't cycle reliably. 4227, H110, Lil' Gun will either hit supersonic so the action cycles, or fail to cycle at subsonic in most stock rifles.


The best thing to do would be to get a 3 ring binder and print out these specialty resource pages. Put them in there and refer to them every time you load. Few reloaders have just one manual, I have 6 or 7, and a few binders that contain load work up data that relates powder charges and oal to accuracy for certain rifles. Keep records. It will help you.

1,000-1,050 is what you are shooting for with subsonics.

On supersonic loads, don't load for velocity, load for accuracy. Then chrono so you'll know trajectory. You could have the fastest load, but if it doesn't group well, it is worthless.

Also, when you change anything with a load while working it up to your rifle, only change one variable at a time. Otherwise you won't know which change caused better or worse accuracy.

We had a commercial reloading business, and literally loaded millions of rounds. Read, learn, go slow and do everything the same way every time. Master one caliber or load, then move on. .38 special or 9mm are good places to start. Single stage would be best. Save progressive reloading until you have mastered your single stage press. Go slow and only use load data from reputable sources.

im basically just trying to gather the resources I need for future loading

Great.

All 147gr 9mm is subsonic...

As for 300blk 11.2 gr of aa1680 on a 220gr projectile is the base standard... you work it down from there as needed with a chrono

There is supersonic 9mm 147 gr load data here.
http://www.lapua.com/en/products/reload ... odata/6/34

Also 9mm major loads for 147 is out there. Stick with the target FPS range of 1,000-1,050 and you will be fine.

My bad.. but supersonic 9mm is really pushing it hot

No worries. Not good stuff for most guns. Primarily used in race guns. 1911's, STI's. Not Glocks or small frame light guns.

Just cut the standard load in half. I'm sure it will work just fine.

This is why you should only get your load data directly from a manual.

not to rain on your parade.. but you should get proficient on normal loads and hold off on subsonics until you get yourself a good chrono...

you really can't work down subsonic loads (other than standard 147gr 9mm or 45acp loads) without a chrono...

otherwise more squibs could occur..

also there is one powder that should never be undercharged === H110 -- there have been reports of detonation occurring because of low powder charges.. this is usually .44mag loads so may not be on your list..

which is why im only gathering info for the future duh

no probs... I'm just nudging you into the direction of buying a chrono at some point... but honestly when you're ready to get some data, just PM me and we can meet up at TSC and you can test those loads on my chrony.. .. but if you shoot my chrono you buy me a new one...

why buy a chrono? Your like a few miles away from me lmfao