.300 Blackout is an intermediate caliber that performs with a better ballistic capability than 5.56x45mm while retaining the same round capacity using a standard M4 magazine. So this brings me to my final points/questions. If anything, its the heavier bullets that are more likely to keep going. [emailprotected], Reduced risk of over penetration from a pass through projectile. ZWQ5ZjU3NDlhM2VmNTg2NmYzZmJkOGM2YjFlNzU5MzQ2YTljNzhmNDBhYjc4 Shooting quickly and quietly is not always as important as shooting flat with the appropriate ballistic energy to put down your target effectively. Although still considered to be on the higher end of the price spectrum, supersonic 300 BLK is the slightly more affordable option sitting at $0.75 - $1.15 per round. Pretty much, its for those who want a bigger bullet in an AR-15 with a minimum of technical distractions (some call them problems). Such is not the case. Why run subsonics without a suppressor? -300BlkTalk The only real advantages of an expanding subsonic over an expanding supersonic in a home defense situation are (in no particular order): Buy Discreet Ballistics 188gr Selous 300BLK Subsonic. Heavy for caliber bullets are often used to off-set lack of velocity and still provide great short to medium range performance. Hopefully, this thread will have a few more good responses and I'll just post a link to this discussion whenever a new 300 owner decides to ruin their barrel. YTMyZGRiMDU5NDZiNjA1ZmIwMjgwZTgwMWE0ODkxZGYwMzFiZWRjMTU3In0= NDJlODc5Y2JiNmNmNmJjNGExOWVjOTI4NGQ2MDYzOGMwNTkwMzU3MmFmZDM1 Running subsonic through my purpose-build supersonic blackout required changing a different buffer and a shortened spring and it runs, but its sluggish. Whats more, subsonic ammo is a good deal lower pressure than supersonic ammo, which has a SAAMI max limit of 55,000 PSI (most is around 50-52,000); most subsonic loads are running 30-35,000. 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. Based on these points, for stopping a human target as quickly as possible, what would favor the subsonic .300 over the 45? M2UyMzRiN2ZjNmVlNjc2MzVhZWYxY2YyZTc3NThhMDkyMjY3YjllMDhkNGJm I was shooting subsonics, while my suppressor sits in the gun store safe waiting for some schmuck to rubber stamp a form, because they're all that I could find. Suppressors - Subsonic 300 Blackout Suppressor Short Can Short List | Sniper's Hide Forum Thunder Beast Dominus, Dominus-K and 338SR on 8" 300 BO Bolt Gun Sound Test Share Watch on The Sniper's Hide App is here! As others have pointed out, if you're going to take the longer barrel and not suppress it (or shoot supers suppressed) then there are other calibers that work well in the AR15 platform and give better performance. Guess, I could all ways turn the 300 into a home defense carbine and load the heavier bullets. OWEyN2JmMTE0ZGM2MzkxYjdhZDc1N2EzYzNhOGQzY2I4NDNkNTJkYjI1MDcy In short a good expanding supersonic 300BLK is always ballistically superior to a good expanding subsonic 300BLK. Interested in picking up your own suppressor device? 300 Blackout offers a range of performance, in both supersonic and subsonic loadings. by JasonM Mon Feb 06, 2012 8:09 pm, Post OK, so it is a ridiculous thing to open up ports and basically ruin perfectly good barrels. Yes it does shine suppressed. Check out my Youtube Channel, TWANGnBANG. by 300Blk Fri May 27, 2011 9:36 am, Post OTMwY2EwMDRiYzUzMDJlY2FlMjFiNGQ5MDY0ZmI0MzdiNWQ2Y2JmYTkzOWFh It cracks me up, that the 320 pound, crisco leaking computer chair army speaks of subjects that they "read" on the internet. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Subsonics are expensive and their performance is marginal compared to supers. Without the velocity of supersonic rounds, subsonic 300 Blackout rounds are not able to routinely make clean shots against large game. Somewhere in south Texas I think makes or sells M1A actions, barrels and other parts. I have multiple 16 inch barrels in 300BLK and they work perfect. Sign up to receive new product announcements, special offers, and the annual product catalog. Unsuppressed, a significant muzzle flash will occur that may hamper low light visibility, the report may cause hearing damage and temporary disorientation. I eventually got an m-16 bolt carrier and heavy buffer. If I couldn't do short with 300blk I would have zero interest in it. The idea that you can have a single setup of buffer mass, gas port size and gas system length that will handle 28kpsi unsuppressed subsonic loads and suppressed 55kpsi supersonic loads equally well is ludicrous on its face. If you're looking for "Hollywood Quiet", these are the loads you want to be shooting. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here Share your latest AR build or photos from the range with #RangeDayFriday for a chance to win a new firearm! } For those 'go loud' engagements you could opt for supersonic rounds to take the ballistic advantage of full power rounds. In the dark, maybe just up out of bed, and then theres a blinding fireball and an ear-splitting report, and its difficult to recover situational awareness, especially at my age, and even with my rail-mounted light. The supersonic and subsonic bullets draw their names from how they each respectively relate to the sound barrier. 300BLK comes in two flavors: supersonic and subsonic. Maybe a greater margin of error for nicking a vital organ as a result of larger bullet expansion. SILENCER SATURDAY #37: Subsonic 300BLK Shootout -The Firearm Blog NTM5OTc1MGMzYzdhYTJiZGM5NmZjOGU0NWNhYjI0NDhjZjc5NWJjYWIxOThm Due to NFA laws in my home state, two different guns were used for this test. SILENCER SATURDAY #37: Subsonic 300BLK Shootout. I have the SA Victor .308 rifle with the adjustable gas block. It is also great supersonic for hunting. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. I have a feeling I know how most of them will answer, but Ive been wrong a few times in the past. Expanding subsonic bullets have almost twice the material to work with which allows them to expand much larger than lighter expanding supersonic bullets sometimes as much as three times original bullet diameter with machined solid copper. The additional bullet weight keeps the rounds from breaking the sound barrier, and gives them as much energy as possible. MzEzZWEzN2Y4MzNkYzJlMGFlOGE1Y2Q4ZTA0ZjVhMjEzYTgxNDI4NjAwMGMx No big surprise guys but Short barrel+weak ammo+ no backpressure=shit reliability ps. In keeping with this motif, an AR-15-style bolt carrier works best with subsonic. .btn { It may not display this or other websites correctly. LE Silencers Science I like it especially in the shorter guns, and, around here at least, its looked on as an effective Whitetail cartridge choice. Use factory loads and factory brass for reloading. Other than to check performance on a chrony or to look for keyholing? I dont like that I need a tool and I hope someone makes one that is finger adjustable or at least adjusted by using a round. But I think I would rather go with the .30 Remington AR cartridge instead now. Just a bit about the whole defensive rifle debate: some say something like 5.56 is not a good choice for home defense. Scan this QR code to download the app now. But! by jason Mon Feb 06, 2012 7:58 pm, Post Given your situation, a "pistol" setup may be in order. Whatever you shoot at will be able to know theyre being shot at immediately and they'll react appropriately. Now I want a 16". background-color: #ffc107; Subsonic 300 Blackout Ballistics - Velocity & Gel Test Results Theres not enough gas in subsonic, or theres too much gas in supersonic, for both to function through a system set up more ideally for one or the other. The speed of sound (in reference to how it travels through air, like a bullet) is approximately 1,100 feet-per-second (fps) at sea level. Any use of this content without express written consent is prohibited. Winchester Super Suppressed Ammo 300 AAC Blackout Subsonic - MidwayUSA I have an SBR as well in 300BLK which is more fun but when traveling out of state it's easier to just take my 16". 300 Blackout Supersonic vs Subsonic - What is the difference? Supersonic ammunition will provide more range, energy delivered on target, and less drop or wind-drift at range. Not sure, probably standard buffer and buffer spring ? 300 Blackout 190 gr Sub-X Subsonic - Hornady Manufacturing, Inc display: inline-block; The .300 AAC blackout has the advantage of having a more effective shape for delivering energy, expanding, and tumbling through vital organs, but it's main advantage while subsonic is it's quiet report, and the ability to make multiple hits on target very rapidly. These two factors make suppressed supersonic rounds very effective and an attractive choice in confined close quarter environments. Always (always) keep in mind that were operating in a world of fractional milliseconds defining too much and not enough, and hotter and cooler.. vertical-align: middle; by JasonAAC Fri May 27, 2011 10:14 am, Post border-color: #ffc107; .300 Blackout, Supersonic vs Subsonic - 80 Percent Arms MjgxYmJjNjRlYjU0NTA4Y2QxZmMxNmNkZjVlOTUzM2M2YzUyYWZkM2E1M2U3 It just so happens that my SOT has such a range and allows me to shoot my 300 BLK subsonics but not supers. Brad Criner, Senior Director Sig Sauer Ammunition. 300 Blackout Ballistics Test Results. The industry standard for supersonic ammunition is set at around 1,100 feet per second at sea level under standard conditions. ZDUxNWQzNTY2ZTJiNjVhN2RiMzgwOWMxNWVlNDlhN2UyYzM3MTRiOGEzN2Zh Besides several Blackouts I shoot with short bbls and suppressed, I also have some 16" rifles. The clear advantages of sub-sonic loads are, of course, sound suppression which can conceal both presence & position. We want you, our readers, to be able to make informed decisions. We offer several different.300 blackout build kits for whatever your needs are. My SIG MCX Virtus 9" 300 blackout has about 300-400 rounds through it. Y2I4ZjgxMDJmNDg1ZGMwMzQ2NzFmN2E5YTcwZDQwZTViYmU5MDc5ZGE3OWU0 Powders are selected for optimal performance and consistency from lot to lot. 300BLK is great if and ONLY if you are a reloader. Read more: SIG SAUER MCX Rifle Review With Video Reply Save Like 7.62Kolectr An argument for another day. I dont know if it will have the short comings of flame cutting as listed above. Subsonics cycle with a suppressor almost universally with all barrel makes. 308 caliber bullets have the greatest range of options of any caliber. Buy American Eagle 300BLK 200gr Suppressor. https://www.youtube.com/watch?v=Dh7Apv8YyVM?t=5m39s. MjI3YjA3MzA4NzgwNTg1ZWFhZDYzZDIwODBiN2U5YzkzNDkwN2NlYzVkNmRl Yes. white-space: nowrap; Is 300BLK worth it in supersonic unsuppressed ONLY appl.? -300BlkTalk Ultimate .300 Blackout Ammo Test - Tactical Sh*t On a different day, I traveled to a suppressor-friendly state and met up with . That' Access features of the Reloading Handbook on your mobile device with the Reloading App. So, if you think .45 ACP is a reliable choice for a defensive round, subsonic Blackout beats it. Generated by Wordfence at Mon, 1 May 2023 8:13:48 GMT.Your computer's time: document.write(new Date().toUTCString());. Due to the higher velocity, you will encounter much louder report regardless of a suppressor, due to the supersonic crack of the bullet. Product #: 417076. The only issues Ive had with my AAC barrel is THE with cut brass. No room for a dissertation on gas system operation, but as the gas expands behind the bullet traveling down the barrel bore, an increasingly greater volume is available for the gas to occupy. This was never listed in their product description, manuals, or even in their FAQs. We also offer our patented AR-15 and .308 Easy Jigs which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required. Y2ZiMWUwMjljYjc2NjMyZDRjOTA0ZTkxMzk2MGEzMWVmMjFmYWVlOTdjZjFm This gun has shot subsonic and supersonic suppressed and unsuppressed flawlessly through 2500 rds min. For anything larger, or at distance, we would recommend going supersonic. I have a 7.5 300 blk pistol with a weak spring & mil-spec buffer, completely closed adjustable gas block and it will only cycle 110gr V-Max rounds. So while many believe .45 ACP to be the mighty fist of God, we know today that pretty much ALL handgun rounds are pretty terrible at stopping threats. border-radius: .25rem; The information provided here does not represent the views of Cheaper Than Dirt! Done like that, the relatively tiny amount of fast-burning propellant behind that honking .30-caliber bullet gets put to work effectively because the pressure at the gas port is higher. The loudest factors from using suppressed subsonic ammunition comes from the sound of the bullet impact and the bolt carrier group cycling back and forth (when using AR platforms). I probably would since you've already got the 6.8 spc rifles. In the review on the MCX from ammoland the author says, "We experimented with a variety of 300 Blackout ammunition. The last one is especially critical in the context of the 2021 market for firearms, accessories and ammunition. If not, and you need to hit targets at distances past 3-400 yards then opting to shoot 5.56 NATO instead will save yourself some money. Theres a time and place for both technologies and you should practice/zero with both types. I happen to be one of those people. This setup will should work excellently with subs and supers, suppressed, suppressed, and any other situation you can throw at it.. Mostly correct. Ive written thousands of words about its evils and ways to lower it for other applications. 10 Things You Must Know About Subsonic AmmoBefore Ever Firing A Round Unless your 300 is just going to be a range toy, the cost savings isnt worth the risk. border: 1px solid transparent; On the downside, this heavy subsonic load will provide little to no expansion, and at handgun velocity (less than 2000fps) will poke holes and crush tissue, likely resulting in a through and through performance. Most factory .300 Blackout subsonic loads are a little more powerful than a routine .45 ACP handgun loading, if we're going on (the admittedly incomplete) calculated energy figures. Fun as hell and easy to tote. YTUxMmIyNTZhYzgzN2I2NjhlZGE3YWZjMTQzMmM2MDUxNDIyNWM2NWRhYzkx Not sure what diameter gas port it has My Problem - Supersonic rounds = seem to function fine / no problems The 110gr Barnes TAC TX are great hunting bullets, and while we could argue all day about ballistics, you can't argue that the 300BLK is the simplest conversion and its effective. if running nothing special and you just want a 30 bore get a PSA 7.62 x 39 upper kit. -----END REPORT-----. I have found that the best overall approach to subsonic function is to shorten gas system length. Same with the 16" 7.62x39 upper I got from PSA. YjYzYTFjNjg3ODIxNzc4MTIwMDYxZmFlYjc5YjAzZjQzODIxYTUzNTYwZDlj For ease of use, Id be better off building another just for using subsonic ammo. Sub Sonic Ammo out of an Unsuppressed 300 Blackout - YouTube Your email address will not be published. document.write(new Date().getFullYear()) Copyright Hornady, Privacy Policy | CCPA Request | Accessibility Policy | Terms of Use, Designed and developed by IdeaBank Marketing. -webkit-user-select: none; Theres much said, unsubstantiated, about over-penetration of higher-velocity bullets. If you do plan on shooting suppressed or aiming at targets within short distances then proceed with the 300 blackout platform.