300 blackout reloading

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300 blackout reloading

Post by chrpw7 on Thu Mar 21, 2013 6:19 pm

Beginning reloading this weekend. Intend to start developing 150 gr ballistic tip, 180 gr soft point and 190 smk moly coated. Mainly for deer/hog hunting.
Major problems finding components. Finally cobbled together all the equipment. But powder and PRIMERS have been a b*&%-. Got primers lined up, finally ttl.
So now, powder. All i could find locally was sr4759 and i cant find any blackout loads online for this. Everybody on the forums says buy a few manuals. Headed to barnes and nobles saturday. But in the mean time, anybody got any experience or suggestions for sr4759 and blackout with mid range bullets. Dont like the idea of working up from squib loads.
Considered referencing a burn rate chart to find something similar, cross reference recipe for blackout, reduce load, and try. Uncomfortable with all these variables and different powder pressure curves, load densities, etc.
Any help would be greatly appreciated. U guys rock.

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Re: 300 blackout reloading

Post by VADER on Thu Mar 21, 2013 7:40 pm

I'm interested in this as well. Just a note I looked at every manual out there and didn't see 300BLK in any of them. 5.7X28 either (expected that).

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Re: 300 blackout reloading

Post by Rebel_Scum on Thu Mar 21, 2013 8:00 pm

Was about to post this very question. I'd love to get my hands on some H110 or W296. CCI small rifle #400 primers should be in stock at midway in a few weeks.

If anyone has any leads, let me know!

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Re: 300 blackout reloading

Post by SubGunFan on Thu Mar 21, 2013 8:04 pm

Cross reference the burn rate chart might be your best bet. Find the closest powder to SR4759 that manuals list 300BLK loads for.

I am looking at a burn rate chart published by Hodgdon and SR4759 falls between H110 (faster) and AA1680 (slower). Both of these are good 300BLK powders. Since the unit wt. to energy ratio varies some by powder type, I would use H110 load data and start at the low end for the bullet weights you plan to use.

Load 5-10 rounds and test for cycling and pressure signs.............................

.

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Re: 300 blackout reloading

Post by miker84 on Thu Mar 21, 2013 8:24 pm

Lil Gun works well too.

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Re: 300 blackout reloading

Post by chrpw7 on Thu Mar 21, 2013 8:29 pm

Thanks for the replies. Guess its not just me. No data in any manuals? Certainly leaves me feeling on my own.
I couldn't find h110, aa1680, accurate 5744 and 4100, ramshot enforcer, or a couple others i've found data for.
Also, no one is loading mid-weight bullets (150-190gr). These were all i could find in bulk and figured i should get what i could while i could. Hoping to make functional subsonic loads with these after developing accurate supers.
Seems i'll probably be on my own with these loads. I'll be sure to post updates as things develope.

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Re: 300 blackout reloading

Post by miker84 on Thu Mar 21, 2013 8:34 pm

300blktalk is a good place to look.

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Re: 300 blackout reloading

Post by SubGunFan on Thu Mar 21, 2013 8:36 pm

Go to a 300BLK website/forum and look at load data for the bullet weights you have. Might not find the exact bullet weight loads, but you can work with "close"........

.

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Re: 300 blackout reloading

Post by chrpw7 on Thu Mar 21, 2013 9:18 pm

Thanks for the interest subgunfan, vader, rebel_scum, and miker84.
I just posted on 300blktalk too. Guess we'll see. I'll be sure to keep u guys updated. Can't wait to get started.

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Re: 300 blackout reloading

Post by chrpw7 on Thu Mar 21, 2013 9:25 pm

Awesome avater vader. Got the older style punisher skull tatooed on my right shoulder.

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Re: 300 blackout reloading

Post by msubullyfan on Thu Mar 21, 2013 9:29 pm

chrpw7 wrote:Thanks for the replies. Guess its not just me. No data in any manuals? Certainly leaves me feeling on my own.

Hornady is your friend. Hornady 9th edition has a good section for 300 AAC/Blackout.

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Re: 300 blackout reloading

Post by mikeab72 on Fri Mar 22, 2013 6:45 am

There are a few things to consider when loading the blackout and what loads to use. I may have missed it in your post but whether you are loading for the AR platform or bolt action makes a big difference in your loads.

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Re: 300 blackout reloading

Post by msubullyfan on Fri Mar 22, 2013 8:49 am

chrpw7 wrote:Everybody on the forums says buy a few manuals. Headed to barnes and nobles saturday.

Just noticed this in your post. Don't wast your time. Barnes and Noble doesn't sell reloading manuals. You best bet is a reloading supply store or order it from Midway.

I don't see an data for SR 4759 even on Hodgdon's Web site. The fact that I can't find any data for it suggests that it might not be a good idea to use that powder. I hesitate to say much because I'm not really up to speed on all the interesting things that people are doing with the subsonic loads in the 300 BLK, but I have to ask: Where did you get the information to decide to use this powder for that caliber? I saw online where one or two people had used it, but it seems like there are much better choices available.

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Re: 300 blackout reloading

Post by frodo on Fri Mar 22, 2013 8:59 am

hey guys... listen. i aint trying to be no hard ass. but
dont reload a damn thing untill you read and understand what yoiur doing. go to a gun shop, if your in jackson go to vans and buy a lyman 49th edition manual. reloading is dangerious
take it from me. when i started reloading. i pulled the bullets out of 9mm,357, 38 sp and 300mag. mixed it all to gather and reloaded
damn near blew my gun up....read...read...read...ask questions
rewd.. some more. this stuff is dangerious. and there are more things to concider than just dumping powder into a shell
the cases have to trimmed and cleaned, or you may have head space problems..
read....study....

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Re: 300 blackout reloading

Post by msubullyfan on Fri Mar 22, 2013 9:34 am

frodo wrote: go to a gun shop, if your in jackson go to vans and buy a lyman 49th edition manual.

You're right about everything you said, but Lyman 49 won't help. No 300 Baclout data. Te only manual I've seen that has it in it is Hornady 9th, though I don't have the new Nosler 7th edition to check.

But you're right -- I wouldn't do anything until I had seen the data in black and white in a reputable manual... Especially if it's a new caliber I wasn't familiar with and ESPECIALLY x2 if I was new to reloading. I had a friend that has a major scar on his cheek because he thought he could get away with substituting W296 for W231 if he dropped the charge down a bit.

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Re: 300 blackout reloading

Post by BigDaddyQ on Fri Mar 22, 2013 10:31 am

I've been monkeying with the 300 blk out for a few months. So has Miker84. I don't think either one of us has used midrange bullets. I know I haven't. Most people are either one extreme or the other. Really light bullets or 200+ grainers. I am using the 208amax over 10.2 gr of A1680 in my AR to get 1000fps. In my Remington 700 I have dropped to 9.6 and am still transonic bouncing around 1050 to 1100. Another friend uses Lilgun. I don't know his powder load but I think he may be using 175gr bullets I'll track him down today and find out.

As for finding components. Van's has the 208. I chose this for hogs hoping with the plastic tip it might at least deform a little when it hits a hog. You can find them online at huntersdiscount I think. I can't find the bookmark right now but it is in Alabama it may be hunterswharehouse. I ordered 500 of them and they said out until november 2013. I got them about 6 weeks after I ordered them so sometime in febuary.

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Re: 300 blackout reloading

Post by miker84 on Fri Mar 22, 2013 10:45 am

I'm loading for an AR, not bolt just for clarification.

I do shoot some 147gr for supersonic plinkers. They'll ring steel and hit paper but I wouldn't hunt with it. I'll probably not load any more of these once I burn up what I have.

Like Q says, I REALLY like the 110-125 Barnes for supersonic.The 110 Tac-TX expands all the way down to 1300fps and it gets to the 2300fps range in a 16" barrel using H110.

I prefer the 208-220 for subsonic, but also have a 178 working subsonic, but not very accurate.

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Re: 300 blackout reloading

Post by BigDaddyQ on Fri Mar 22, 2013 10:51 am

Miker have you tried the really really heavy bullets yet? Like the 240gr berger. I have tried 225 and it stabilizes fine in my 1/8 twist AR. I'm sure my 1/7 twist remy will handle the 240.

I haven't touched supersonic anything. How much H110 are you using?

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Re: 300 blackout reloading

Post by miker84 on Fri Mar 22, 2013 11:18 am

BigDaddyQ wrote:Miker have you tried the really really heavy bullets yet? Like the 240gr berger. I have tried 225 and it stabilizes fine in my 1/8 twist AR. I'm sure my 1/7 twist remy will handle the 240.

I haven't touched supersonic anything. How much H110 are you using?

Haven't tried any of the 220+ stuff yet.

warning: this is my load so it may not work in your gun, etc,etc always consult a manual first and start at the minimum.

For the 110gr Barnes Tac-TX or Hornady Vmax 110gr I use 18-20gr. 18 will get you to 2200fps. 20gr will get you to 2400fps, but you'd better use good brass. I've popped a couple of primers and had hard extractor marks at the 20gr level with some brass. The Remington 300 brass hasn't shown any pressure signs at the top end. I stay right at the 19gr range and haven't had any issues with formed LC brass or Remington.

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Re: 300 blackout reloading

Post by chrpw7 on Fri Mar 22, 2013 9:49 pm

Lots of questions and good advice.
First, reloading strictly for ar platform. Limits my oal to magazine length and length to ogive is also a consieration for proper feeding.
As far as why i chose this powder: i couldn't find any of the popular or common powders locally. Consulted a few burn rate charts and found sr4759 to have similar burn rate to several of the common blackout powders (enforcer, lilgun, and a-4100). Slightly faster than h110 and even a little faster than a-1680. Also available locally. So thats what i bought. Still might not be the best choice, but it was the best one i had. And thanks for the heads up about barnes and nobles. I'll check the lgs. Dont want to spend on something that wont help tho.
I understand the the safety concerns with reloading. I mean every properly loaded cartridge is basically a precision engineered BOMB. I will certainly excercise all due diligence and caution.

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Re: 300 blackout reloading

Post by SubGunFan on Fri Mar 22, 2013 9:55 pm

chrpw7 wrote:.......................Slightly faster than h110 and even a little faster than a-1680. ...................

My burn rate chart shows your powder slower than H110 and faster than A1680.

.

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Re: 300 blackout reloading

Post by chrpw7 on Sat Mar 23, 2013 12:08 am

Guess no two charts are exactly the same. The one i've got shows it one step above h110 and 2 steps above a1680. I'll look at a few other charts too. Thanks.

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Re: 300 blackout reloading

Post by chrpw7 on Sat Mar 23, 2013 12:24 am

Subgubfan, have to concur it seems sr4759 is slower than h110. The one chart i downloaded shows it faster but i found about 10 others online showing h110 faster. Guess thats part of the check, check, and double check.

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Re: 300 blackout reloading

Post by Corey1480 on Sat Mar 23, 2013 10:26 am

Good luck at Barnes & noble. Was in there a few days ago and they didn't have any manuals for reloading. Vans just got a bunch of manuals in though, but there Van prices

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Re: 300 blackout reloading

Post by msubullyfan on Sat Mar 23, 2013 7:22 pm

Corey1480 wrote:Good luck at Barnes & noble. Was in there a few days ago and they didn't have any manuals for reloading. Vans just got a bunch of manuals in though, but there Van prices

Barnes and Noble does not carry any reloading manuals. Never have that I know of.

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Re: 300 blackout reloading

Post by Corey1480 on Sat Mar 23, 2013 8:42 pm

Yeah, they have ballistic and gunsmithing books though.

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Re: 300 blackout reloading

Post by jwatts on Sun Mar 24, 2013 9:49 am

I am about to try to work up a subsonic load for my 300blk AR pretty soon. I still have to find some 1680 powder. Like was said earlier, most folks load supersonic with H110, subs with 1680. Right now I am loading 125gr Nosler Ballistic Tips for hunting. I load them with 18.5gr of H110. I am not sure on the velocity, but it shoots some good groups.

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Re: 300 blackout reloading

Post by miker84 on Sun Mar 24, 2013 9:53 am

If you can't find 1680, 4227 will work.

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Re: 300 blackout reloading

Post by jwatts on Sun Mar 24, 2013 12:37 pm

Thanks, I will keep an eye out for that powder.

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Re: 300 blackout reloading

Post by DeltaSmokers on Sun May 05, 2013 10:31 pm

What die sets do yall like? I have a rcbs rock chucker.

any out of the ordinary problems with the 300blk?

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Re: 300 blackout reloading

Post by BigDaddyQ on Sun May 05, 2013 10:44 pm

I used Reding 300whisper dies at first but bought some 300blk out dies from lee. They both worked fine.

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Re: 300 blackout reloading

Post by guntinker on Tue May 07, 2013 12:07 pm

Just my 2 cents.

After not being able to find any components I chucked up some 223 brass in the lathe and cut them down to xxx.xx" cant remember off the top of my head, but will check tonight. Richard came over and helped me form the brass with my Lee dies. All went as planned. We primed them with 7.5 Remington primers used 165gr. sierra bullet with 8,9, and 10gr. blue dot powder. At 10.3gr I did see the primer change shape, but it did not flatten completely so I think 10gr. would be the max for this setup. We did not crono the shots as we were just trying to get a ballpark idea of what was possible within the safe area of this load.

Note: When cutting the brass off make sure it is not too long. Even if only a few thousandths too long the rounds will not chamber properly. luckily we found this out in a single shot as I believe in an AR they would have closed enough to fire.

PS. I would also like to try out some Trailboss as well. Smile

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Re: 300 blackout reloading

Post by jwatts on Tue May 07, 2013 12:09 pm

I am resizing and cutting my own brass too. I have been sizing before cutting though. It is fairly easy, just time consuming. I loaded a few to try subsonic but haven't had a chance to shoot them yet.

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Re: 300 blackout reloading

Post by guntinker on Tue May 07, 2013 12:13 pm

here is some more interesting testing being done:

http://www.m4carbine.net/showthread.php?t=86302

http://m14forum.com/ammunition/125170-300-blackout-questions-again.html

http://www.300blktalk.com/forum/viewtopic.php?f=141&t=79806

___________________________________________________________

I pulled this off of another thread "SUBSONIC"

Re: Subsonic load.

Post by eddybo on Sat May 04, 2013 11:16 am
.



rem primers, 8gr blue dot with a 208, load em long as you can.

Right now I am loading them a little shorter and running 7grs BD with ccis and 208s. The 8gr load was what I used in my first whisper that worked so well. I have had to play with it s alittle to get them to stay subs in this gun, and the accuracy is not as good.

I can shoot it super sonic with I think was 14grs of N133, ccis, and 208s and it shoots but it is supersonic Sad If I could get that accuracy at 1070 fps I would be tickled.

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Re: 300 blackout reloading

Post by BigDaddyQ on Tue May 07, 2013 2:44 pm

You mean like this?


100 yards out of a SOTA Arms 300blk AR platform 16in stainless barrel and DPR suppressor. Using 208Amax on top of 10.2gr of 1680. Chrono shows it at 975fps average over a 10 shot string. Fired by the Falcon out of my gun at Magnolia.

Blue dot is a dirty powder to be using for suppressors. Trailboss won't fit enough in the case to get it out of the barrel. 10.2 grains of trail boss under a 175matchking in a 308 darn near fills the case all the way. Here is His target.

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Re: 300 blackout reloading

Post by jwatts on Tue May 07, 2013 2:52 pm

I found some recipes using 208gr Hornady hollow points and 4227 powder. It suggested 10.2 down to 9.4gr of powder. I have some loaded from 10.2 down to 9.6 I plan to try out.

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Re: 300 blackout reloading

Post by eddybo on Tue May 07, 2013 6:26 pm

BigDaddyQ wrote:You mean like this?


100 yards out of a SOTA Arms 300blk AR platform 16in stainless barrel and DPR suppressor. Using 208Amax on top of 10.2gr of 1680. Chrono shows it at 975fps average over a 10 shot string. Fired by the Falcon out of my gun at Magnolia.

Blue dot is a dirty powder to be using for suppressors. Trailboss won't fit enough in the case to get it out of the barrel. 10.2 grains of trail boss under a 175matchking in a 308 darn near fills the case all the way. Here is His target.

Like that but with less paper between the holes Wink

Just about anything that is going to give you 50% case filling or more on a sub round going to be dirty, blue dot included. I just refuse to load less than 50% case fill.

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Re: 300 blackout reloading

Post by SubGunFan on Tue May 07, 2013 8:56 pm

Another thing to consider (watch out for) when looking at 300BLK loads for the AR platform is................ Pistol or Carbine length gas system.

.

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Re: 300 blackout reloading

Post by DeltaSmokers on Tue May 21, 2013 3:03 pm

About to do some homework to see where I want to get started with the 300blk. I decided to look on Amazon and found this
Hornady 9th Edition

I thought that looked awfully high so I checked Midway and found it here.
Hornady 9th

I usually like amazon but not this time.

Any other load manuals that have additional info on the the 300blk?

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Re: 300 blackout reloading

Post by eddybo on Tue May 21, 2013 3:32 pm

I quit buying manuals. This is about all I use these days.

http://www.neconos.com/details3.htm

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Re: 300 blackout reloading

Post by TheOtherMike on Tue May 21, 2013 10:13 pm

Hodgdon/IMR/Winchester reloading manual is online, and has data for .300 AAC Blackout.

http://data.hodgdon.com/cartridge_load.asp

You can find plenty of load data on the web, but it is nice to start with "official" data from a powder manufacturer.

They even have .308 subsonic loads listed.

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Re: 300 blackout reloading

Post by DeltaSmokers on Tue May 21, 2013 10:38 pm

TheOtherMike wrote:Hodgdon/IMR/Winchester reloading manual is online, and has data for .300 AAC Blackout.

http://data.hodgdon.com/cartridge_load.asp

You can find plenty of load data on the web, but it is nice to start with "official" data from a powder manufacturer.

They even have .308 subsonic loads listed.

thanks
lots of good data.


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Re: 300 blackout reloading

Post by chris_k on Wed May 22, 2013 10:02 am

Hodgdon has 300 blk data on their website.

http://data.hodgdon.com/cartridge_load.asp

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