XD45 7,124 Posted September 7, 2013 Report Share Posted September 7, 2013 Very informative link Darth. Thanks I found that article years ago and I was amazed at how much information was in it. The info in that article is so good I saved the whole thing to my computer in case it's ever taken down. 1 Quote Link to post Share on other sites
gunfun 3,930 Posted September 7, 2013 Report Share Posted September 7, 2013 good plan. I do that a lot too. I've lost so much good technical data. People with the best info get pestered until they are fed up and quit. - I'm glad for the recent stuff from Jack and a couple other revivals of good info here. Quote Link to post Share on other sites
XD45 7,124 Posted September 16, 2013 Report Share Posted September 16, 2013 Just noticed Freedom Munitions has 147gr reman loads for $318/500. Quote Link to post Share on other sites
Spacehog 2,218 Posted September 16, 2013 Report Share Posted September 16, 2013 Just noticed Freedom Munitions has 147gr reman loads for $318/500.I picked some up. I knew it was remanufactured, but there is a lot of inconsistency in the primer crimps. It is cut down Lake City brass all '12-'13 with annealed necks. I am sure it will be fine for plinking, but if you buy it with the idea of reloading the brass you will likely be disappointed. Some primers have the typical lake city type crimp and some have a 4 point deep staked primers. I assume the reason for the variation is that some of the primer pockets may have loosened up. Quote Link to post Share on other sites
XD45 7,124 Posted September 27, 2013 Report Share Posted September 27, 2013 At the range today the guy next to me was shooting a suppressed 300AAC with subsonic ammo. Pretty effing cool. Quote Link to post Share on other sites
SwissyJim 117 Posted September 28, 2013 Report Share Posted September 28, 2013 At the range today the guy next to me was shooting a suppressed 300AAC with subsonic ammo. Pretty effing cool. Full length? SBR? I just submitted my Form4 for a 7.62 Suppressor exactly for this reason. With the right setup, a suppressed .300AAC is no louder than a suppressed .22 - at least according to the Internet and YouTube Quote Link to post Share on other sites
XD45 7,124 Posted September 28, 2013 Report Share Posted September 28, 2013 It was full length. I can't say if it was louder than a suppressed 22 but it was damn quiet. Of course I was shooting a 300 mag and the guy 2 benches down was shooting a 338 so maybe it just seemed quiet. Quote Link to post Share on other sites
Spacehog 2,218 Posted September 28, 2013 Report Share Posted September 28, 2013 AA 1680 just came back in stock at Midway. Got an 8 lb jug coming for the express purpose of loading up some subs with 208 gr AMAX. I doubt my 12.5" will cycle them properly until my can arrives, but I really liked the versatility of the powder for both subs and higher velocities with heavier bullets in the 300 BLK. Should be fun working up different loads. I should add that the Freedom Munitions stuff that I posted a pic of above performed very well with no issues what-so-ever when I got to the range last weekend. Quote Link to post Share on other sites
RedChallenger 149 Posted September 29, 2013 Report Share Posted September 29, 2013 IMR 4227 is also a very good powder. 9.5gr/220gr bullet great subsonic load. Quote Link to post Share on other sites
Spacehog 2,218 Posted September 29, 2013 Report Share Posted September 29, 2013 Thanks Red. I will record that for future use. Quote Link to post Share on other sites
RedChallenger 149 Posted September 29, 2013 Report Share Posted September 29, 2013 From Hodgdon's 2013 Annual Manual: IMR 4227, 10.5gr, 220gr SIE HPBT, 1014fps, 28,800cup, 16"/1:8 barrel. I'm using the 9.5gr with a suppressor and 10.5 pistol length tube barrel. 1 Quote Link to post Share on other sites
gunfun 3,930 Posted September 29, 2013 Report Share Posted September 29, 2013 So jealous... Quote Link to post Share on other sites
corbin 621 Posted September 29, 2013 Report Share Posted September 29, 2013 Curious..... Do you think you could hand load a 7.62x39 with a heavier projectile that would approximate the 300? Quote Link to post Share on other sites
HappYBallZ 31 Posted September 29, 2013 Report Share Posted September 29, 2013 I was looking at 300AAC when I could not find a 7.62x39 AR upper... changed my mind as soon as I seen the price for ammo. Haha I don't reload so no go for me. Quote Link to post Share on other sites
gunfun 3,930 Posted September 30, 2013 Report Share Posted September 30, 2013 Curious..... Do you think you could hand load a 7.62x39 with a heavier projectile that would approximate the 300? If you are talking subsonics, yes, but the question is whether it would cycle the gas system. Quote Link to post Share on other sites
XD45 7,124 Posted September 30, 2013 Report Share Posted September 30, 2013 Curious..... Do you think you could hand load a 7.62x39 with a heavier projectile that would approximate the 300? If you are talking subsonics, yes, but the question is whether it would cycle the gas system. The lack of availability of suitable bullets is a major problem. If you're going to reload the 300AAC makes more sense due to the great variety of 308 bullets available, and the fact that 223 brass is cheap. 2 Quote Link to post Share on other sites
gunfun 3,930 Posted September 30, 2013 Report Share Posted September 30, 2013 And that you can easily cast 300 BO friendly subsonic bullets for less than a cent each. Quote Link to post Share on other sites
XD45 7,124 Posted November 7, 2014 Report Share Posted November 7, 2014 Well I resisted the 300bo bug as long as I could. I was planning to buy my wife a Sig MPX but I decided to build her a 300bo pistol instead. And since I ordered 3 stripped lowers maybe I'll build myself one too. 2 Quote Link to post Share on other sites
mostholycerebus 415 Posted November 8, 2014 Report Share Posted November 8, 2014 A year since I posted here, and I still cant find cheap plinking ammo. I love my 16" but it basically sits in my closet while I take out my AKs. Remington has been promising cheap ammo, but it's yet to arrive. This round is developing the opposite problem as 7.62x39, amazing defense rounds but no cheap target ammo. Now if Wolf gets on board, like they did with 6.8, we'll be in the money. I kinda want to ditch it, but then I see the ballistics out of short barrels and fall in love all over again. I need to build a pistol next, or maybe even SBR it. Quote Link to post Share on other sites
XD45 7,124 Posted November 8, 2014 Report Share Posted November 8, 2014 (edited) The combination of the performance of the blackout in a short barrel with the Sig brace makes the AR pistol a very strong option. I was never remotely interested in AR pistols in 5.56 Cheapest I've found for blackout is 58 cents a round for new production. That's better than a dollar a round not that long ago. Maybe this will be my incentive to get my rl550b out of storage. Edited November 8, 2014 by Darth Saigus 1 Quote Link to post Share on other sites
Spacehog 2,218 Posted November 8, 2014 Report Share Posted November 8, 2014 I am loading 150 grain FMJ for around .17 / round (.05 in powder, .03 primer, .09 bullet), with my own brass cut down from .223. It can be cheap to feed, but it is one of those calibers where reloading really pays off. 1 Quote Link to post Share on other sites
gunfun 3,930 Posted November 8, 2014 Report Share Posted November 8, 2014 Wait until you start casting 30 cal. Those will come down to less than a cent in lead per round. Quote Link to post Share on other sites
Spacehog 2,218 Posted November 9, 2014 Report Share Posted November 9, 2014 (edited) Yeah, your previous threads on the cost of casting vs buying already has caught my interest. .08 cents a round is getting into .22 territory. Edited November 9, 2014 by Spacehog Quote Link to post Share on other sites
gunfun 3,930 Posted November 9, 2014 Report Share Posted November 9, 2014 It's under .22 territory lately. Subsonics in 300BO are basically the same recipes as 45 ACP, but using a small rifle primer. Not that I am advocating just using 45 ACP data.- Just saying it tends to be the same stuff in similar amounts, so the costs are comparable. I wouldn't want to run lead without polycoat in a DI gun though. I'm working to get a 300 BO gun as fast as soon as I can. 1 Quote Link to post Share on other sites
DLT 1,646 Posted November 10, 2014 Report Share Posted November 10, 2014 A friend of mine has an AR sbr in that caliber and I've shot it. Not really impressive if you ask me. There are some obvious advantages to the round but really all that has been accomplished is an American equivalent to the 7.62 x 39 has been made. Quote Link to post Share on other sites
XD45 7,124 Posted November 10, 2014 Report Share Posted November 10, 2014 (edited) I'm a big fan of x39 but I see the advantages of 300bo. Designed for subsonic and supersonic both. Subsonic x39 is practically nonexistent. Dozens of bullet weights and designs available. x39 very limited bullet selection. Uses standard AR magazines and bolts. This is obviously only an issue if you're using an AR. Brass can easily be made from common 5.56 brass. You may not think these things matter but the round is taking off because it does offer advantages. It is now the second most popular round for the AR and it is only going to grow. Let me add that there is a big disadvantage that comes with the advantages. 300bo can be chambered in 5.56 guns with catastrophic results. For me I'll be using only black mags in black guns for 5.56 and fde mags in fde guns for 300bo. Edited November 10, 2014 by Darth Saigus 1 Quote Link to post Share on other sites
DLT 1,646 Posted November 10, 2014 Report Share Posted November 10, 2014 I hadn't even thought about an accidental chambering issue, but that will quickly ruin your day. Good post Darth. Quote Link to post Share on other sites
XD45 7,124 Posted November 10, 2014 Report Share Posted November 10, 2014 Blackout doesn't drop in a 5.56 chamber but dropping the bolt on a blackout can ram the bullet back into the case, allowing the bolt to close. You will be lucky if you just lose a rifle. Quote Link to post Share on other sites
XD45 7,124 Posted December 14, 2014 Report Share Posted December 14, 2014 (edited) As I am now a blackout owner, and more of you are also joining the club, here is a little reminder to watch which ammo you put in your 556 guns. My rules are color coding gun and mags. Color is FDE for blackout. FDE gun, FDE mags. And never have both calibers on the firing line at the same time. 5.56 will not chamber in a 300bo. A few images I skimmed from the interwebs of 300bo in a 5.56 gun. Edited December 14, 2014 by Darth Saigus Quote Link to post Share on other sites
gunfun 3,930 Posted December 15, 2014 Report Share Posted December 15, 2014 I'm a big fan of x39 but I see the advantages of 300bo. Designed for subsonic and supersonic both. Subsonic x39 is practically nonexistent. Dozens of bullet weights and designs available. x39 very limited bullet selection. Uses standard AR magazines and bolts. This is obviously only an issue if you're using an AR. Brass can easily be made from common 5.56 brass. You may not think these things matter but the round is taking off because it does offer advantages. It is now the second most popular round for the AR and it is only going to grow. Let me add that there is a big disadvantage that comes with the advantages. 300bo can be chambered in 5.56 guns with catastrophic results. For me I'll be using only black mags in black guns for 5.56 and fde mags in fde guns for 300bo. + uses a huge variety of commonly available .308" & .309" projectiles compared to the .311" & .312" "Fat 30" bullets the ruskies and the brits use. Way more options without sacrificing accuracy. Quote Link to post Share on other sites
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