![]() ![]() 420 launched at a velocity above 2950 fps will get the job done at sea level. These relatively innocuous-sounding cartridges, with their low recoil and report, serve professionals with an alternative to much louder standard power rifle cartridges allowing faster follow up shots and better full auto accuracy with the added safety of not penetrating level 2 and higher armor worn by many law enforcement and military professionals.Ītomic’s Tactical Cycling Subsonic in 5.56x45mm produces similar energy and power as 9mm cartridges and delivers CQB accuracy from rifles with barrel twist rates of 1 in 7″ or faster. On many ranges subsonic ammo will disqualify the shooter due to the. Unsuppressed, it is as quiet as most 22 LR and has minimal felt recoil. ![]() If the rifle can group them, it'll kill.Atomic’s Tactical Cycling Subsonic is unlike traditional high powered rifle ammunition. A bullet of most any size through the brain will put something down. Thats over 3 times the weight so three times the energy.Ĭould you hunt with them? Sure, it's about shot placement. Hodgdon OAL would be mag length or shorter, should be in loading data. The 300 is shooting as much as a 240gr SMK at the same subsonic velocity as a. 1 Trailboss is your powder if you want subsonic 223 Posted: 10:31:02 PM EDT 2 Quote History Quoted: Trailboss is your powder if you want subsonic 223 See Hodgdon's on line data for Trail Boss loads. 223, it can't have as much energy as a 300BO. I thought I missed on two of them based on the bullet smack, but then the squirrels fell and did their death dance. I could hear the bullet hit the tree after it passed through the squirrel. Only downside is they're round points, not HP. they don't cycle in a semi, but are quiet suppressed or not. The squirrel kept going to the next tree and looking at me. ![]() I tried it in my P22 and made my first kill with that gun. finally I got it sighted in and killed two with head shots. I got ten shot at him before he decided to go up a tree. My scope was off and I managed to sight it in on a squirrel. 22 It's a 22LR with a 40gr bullet at 710fps. Which of course, I am going to try and see what happens. Fighter aircraft illustrate the most recognizable advantage of not exceeding the speed of sound. So, it looks like I might be able to get away with using another 1/10th grain and still remain subsonic. Why Go Slow Subsonic ammunition eliminates the shockwave crack of high-velocity ammunition breaking the sound barrier. I was out sick the last couple days and since I was bored at home, I went to wally world to buy a couple things. At 32 degrees Fahrenheit sound travels roughly 1,086 fps, and loads labeled as subsonic usually run at or below 1,050 fps. FMJ bullet traveling at 2,350 fps at the muzzle, producing 1,778 foot-pounds of energy. Powder type Filling/Loading Ratio Charge Charge Vel. Actual load order can vary, depending upon lot-to-lot powder and component variations.ĩ0 loads produced a Loading Ratio below user-defined minimum of 50%. That all of the listed powders can be unsuitable for the given combination of cartridge, bulletĪnd gun. Loads or exceeds maximum suggested loads as presented in current handloading manuals. These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.Ĭ A U T I O N : any load listed can result in a powder charge that falls below minimum suggested Matching Muzzle Velocity: 950 fps or 289 m/s Predicted Data for Indicated Charges of the Following Powders. Useable Case Capaci: 22.618 grain H2O = 1.469 cm�Ĭartridge O.A.L. 224, 90, Sierra HPBT MatchKing 9290 G7 Litz ![]()
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