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Posted: 9/11/2010 2:36:58 PM EDT
Just about to complete my 9mm AR; It has a 16" RRA barrel. What do you guys who reload feed it? Cast bullets are my first choice.

Powders I have on hand are:
Bullseye
Unique
HS6
Green Dot
Titegroup
Clays
TAC

thanks
Link Posted: 9/11/2010 3:08:05 PM EDT
Of the powders you listed I would try HS-6. The slower powders will give you the most when it comes to velocity increases.

My first pick for 9mm regardless of barrel length would be Power Pistol. You could try Blue Dot and AA#7 too.
Link Posted: 9/11/2010 7:07:01 PM EDT
Link Posted: 9/12/2010 7:05:45 AM EDT
Cast bullets are fine for the 9mm AR. Here is what I am really enjoying right now.

Mixed brass
147 grain lead round nose
WSPM primer
3.6 gr WST
1.155" OAL

My gun loves, them, they are plenty accurate for me. I shoot man-sized steel out to 300 yards with iron sights. They are also subsonic so will work with a suppressor.

jonblack
Link Posted: 9/12/2010 10:27:20 AM EDT
I would think Blue dot would be a very good choice for the longer barrel. It is one of the slowest burning pistol powders.
Link Posted: 9/12/2010 12:31:39 PM EDT
I have been getting decent results with SR7625 behind a 115 Gr FMJ and Wolf SP. I am shooting a Rock River Mid-Length upper. Its good for bulk loading, but I don't know how much I would use it for accuracy loads. Ususally get 1" groups at 50 yds when I do my part.
Link Posted: 9/12/2010 12:58:46 PM EDT
I use HS6 and Zero 115gr. FMJ. Here are load weights and average velocities for 10 shot strings out of a Rock River 16" upper. Loads above 7.0 are +p.

6.8 1348

7.0 1396

7.2 1439

7.4 1471

7.6 1501

7.8 1550
Link Posted: 9/13/2010 6:03:12 PM EDT
Originally Posted By jonblack:
Cast bullets are fine for the 9mm AR. Here is what I am really enjoying right now.

Mixed brass
147 grain lead round nose
WSPM primer
3.6 gr WST
1.155" OAL

My gun loves, them, they are plenty accurate for me. I shoot man-sized steel out to 300 yards with iron sights. They are also subsonic so will work with a suppressor.
jonblack


Cast+Suppressor= BAD
ka
Link Posted: 9/13/2010 6:29:08 PM EDT
Originally Posted By kingairpilot:
Cast+Suppressor= BAD
ka


Yes, you are right. Sorry, I overlooked that technical detail.

jonblack

Link Posted: 9/14/2010 3:12:04 AM EDT
I have to get some Power Pistol to check it out. I have used 5.6gr of Unique behind jacketed 124gr bullets in my carbine with good results. It's a moderate to mild load but it works in all my pistols as well as my carbine.
Link Posted: 9/14/2010 6:01:55 AM EDT
124gr home cast LRN over 5.3gr of unique.
Do not use the Lee tumble lube mold, it has a step in the bullet that can cause jams. Use a standard round nose profile. You can still use alox and it works fine.
Do not use through a suppressor UNLESS you have one that can be disassembled for cleaning. Even then it can be quite a pain to deal with.
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