![]() This is why the 55 grain SP flat base bullets work well as subsonic round!īullet Trajectory- Distance is in Yards and drop is in inches. We offer a flat-rate shipping fee of 11.95 per warehouse, no credit card fees, and no state taxes. Ammunition shopping can be a fun and exciting experience, so get yours now for your home protection or sport. Having a high BC bullet at subsonic does not benefit the shooter at all. Buy ammo from our popular calibers 22 LR, 9MM Luger, 40 S&W, 223, 308, and 380 ACP. BC (ballistic coefficient) is for supersonic flight, and does not matter at subsonic speeds. This allows the 55 grain SP flat base to be more stable and have the potential to be more accurate at subsonic speeds than a BTHP design. The 55 grain SP flat base is a much shorter bullet than a similar weight 55 V-max or BTHP design. In a given twist rate (like a 1:10″ or 1:9″ barrel twist) and slow subsonic speeds, a shorter, flat base bullet is more stable than a longer BTHP or VLD match bullet of the same weight. Bullet length is a major factor in how stable it is out of the muzzle. Why use a 55 grain SP (soft point) flat base, instead of a BTHP, VLD, polymer tip or match bullet? When shooting at subsonic speeds, bullet stability becomes a huge factor for the bullet to properly stabilize and for it to shoot well. If you are zero’d at 100 yards with normal full power supersonic 223 or 5.56 ammo, your point of impact (POI) with the subs will be about 6″-12″ low at 100 yards. This ammo will NOT cycle an AR-15!!! It will shoot fine out of an AR-15, but you will need to manually cycle the bolt. subsonic Best 300 AAC Blackout Ammunition rifle subsonic - AmmoSeek. The 55 grain SP bullet is marginally stable in a 1:12″ twist barrel at subsonic speeds, and should not be shot in any slower twist rate. Supersonic and subsonic 300 Blackout loads run at completely different chamber. If you have a 1:12″ twist, you will need to check bullet stability first before shooting through a suppressor. This ammo will NOT cycle an AR-15!! This ammo is designed for 1:10″ twist or faster (1:9″, 1:8″. 224-inch diameter boat tailed bullet that sits in a rimless, bottleneck case that measures 1.76 inches in length. This subsonic ammo is not designed for barrels longer than 24″. This ammo is loaded to SUBSONIC speeds for barrels from 10″ to about 22″ barrels. 223 Ammo is an excellent choice for hunting, self-defense, and target shooting. You cant go too heavy because eventually youll exceed the pressure spec. Once-fired LC brass, Hornady 55 grain SP (soft point) 1030 fps. The obvious path to subsonic loads is to go with heavier bullets since velocity has an upper limit. 22lr subsonic out of the AR with conversion kit.Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds). I also want to play with different bullets in the 69+ gr range.Ī heavier projectile version of the 22lr out of and AR that doesn't require a conversion kit, different magazine and the issues associated with 22lr fouling AR and can. I'd like to get it down to and average of 1050 fps (true subsonic level) with a SD of 10 so I am going to play with the powder and start working down in 2/10 increments. ![]() I have no idea on what it's max effective range would be but I'd say 200 yards would be a safe bet. Primer crack is less because of bolt staying closed. About as loud as subsonic 22LR out of the AR w/can. These will not cycle the bolt (so single shot and manual rack) I shot these out of a AR15 w/ 1-7 twist 10.5" barrel / AAC can (these would be excellent on a suppressed bolt action. 223 subsonic.ĥ.2gr Trail Boss (fills case nicely - does not meter to well though *donut shaped powder) Here is a load i cooked up (after a lot of internet research on the subject) this weekend for. 223 Rem - Armscor USA 62 Grain Full Metal Jacket - 500 Rounds 87 in Stock 245.00 Sold Out 223 Rem - Federal Gold Medal 77 Grain Sierra Matchking HP Case Notify Me 5.56 Nato - PMC X-Tac 62 Grain Green Tip 1000rd Case 59 in Stock 459.99 300 Blackout - Precision One 130 Grain Hollow Point - 200 Rounds 37 in Stock 179.
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