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Old 09-21-2012, 11:29 PM   #1
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Default .300 Blackout

Does anyone reload it? I did a search & came up empty. Are dies available for it? There does not seem to be an abundance of info about it in the popular reloading reference books. Any info you could share is greatly appreciated, thanks.

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Old 09-22-2012, 12:37 AM   #2
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Dies are out there. Even if they weren't if you give RCBS or one of the other die makers the a drawing or a fire formed case they can make you dies.

http://www.lmgtfy.com/?q=300+AAC+blackout+reloading+dies

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Old 09-22-2012, 02:43 AM   #3
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" .300 Blackout
Does anyone reload it? I did a search & came up empty. Are dies available for it? There does not seem to be an abundance of info about it in the popular reloading reference books. Any info you could share is greatly appreciated, thanks. "


Yes, many reload the .300 BlackOut. There are several die makers making dies, I have a set of Lee dies. Printed loading data is limited but the data is available.

The loads run from 110gr to over 220gr for sonic to sub-sonic uses. My current endeavors are with 147 GI bullets and 'Lit Gun' powder. So far I am pleased. Brass is commercially available and conversion brass is out there as well. I convert my own from .223/5.56 stuff. I have found that my brass has a much longer life span than I expected. I have some brass that I have used for testing that has 24 loading in it so far and going strong.

Hope I help a little.
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Old 09-23-2012, 01:44 PM   #4
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I saw Redding dies at my local gun store. They're expensive, around $67 for a set.

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Old 09-23-2012, 03:30 PM   #5
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MidwayUSA has the lee, redding, and forester dies the last time I looked. I've had my 300blk for a few weeks now and it is very nice. I invested some funds for the Harbor Freight cutoff saw, a Hornady case trimmer, and some H110 powder. I have only loaded 147gr bullets so far but they have proved to be accurate and reliable.
It takes a while to convert your own brass but I enjoy reloading so I don't mind. 10+ years of reloading and I still have a single stage press!
I use Lee dies to seat and crimp but Forester to reform and deprime. I got cases stuck in the lee die and the last one was stuck to the point it could not be removed.
For the winter, I hope to get a bunch of once fired brass to convert. There are some places that sell 125gr bullets cheaply so I would get those over the heavier 147.

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Old 09-23-2012, 05:41 PM   #6
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"does not seem to be an abundance of info about it in the popular reloading reference books. Any info you could share"

I think the lack of book published loading data is due to the fact that the 'S. A. A. M. I.' standards only date from Jan 17 and March 4 of 2011. That's new. The time from standardization to testing to printing a new manual to release is going to take some time in the hard print world.

I keep a running listing of my loads and as testing progresses the listing grows and changes. These are my tests and may not be appropriate in your weapon with your components. This is reference material only. One note, loads that don't function (FTF or FTE or lock bolt on empty mag) are not listed. Also, I don't have loads that exhibit any pressure signs in this grid.

Bullet B-weight Powder P-weight M-Velocity OAL

V-Max 110 630 17.5 2096 2.000in

V-Max 110 H110 18.5 2160 2.000in
V-Max 110 H110 19 2302 2.000in
V-Max 110 H110 19.5 2271 2.000in
V-Max 110 H110 20 2240 2.000in

OTM 125 H110 16.5 2018 2.182in
OTM 125 H110 17 2031 2.182in
OTM 125 H110 17.5 2053 2.182in
OTM 125 H110 17.8 2131 2.182in
OTM 125 H110 18 2123 2.182in

M2 GI 147 H110 16.4 1928 2.065in
M2 GI 147 H110 16.6 1945 2.065in
M2 GI 147 H110 16.8 1948 2.065in
M2 GI 147 H110 17 1988 2.065in
M2 GI 147 H110 17.5 1993 2.065in

M2 GI 147 630 13.4 1696 2.160in
M2 GI 147 630 13.5 1764 2.000in

M2 GI 147 LtGun 15 1870 2.160in

These loading are not my final loads. Further testing, including accuracy tests have yet to be completed.
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