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. Having a high BC bullet at subsonic does not benefit the shooter at all. 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. For sure 223 is one of the worse cartridges for subs. 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. This is with new high-end Norma brass and Sierra 75 grain HP bullet. 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. 223 Sub route was too much hassle and expense when it is only slightly better performance than the. Anyone have information on subsonic loads for 223/5. 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. 22LR suppressed that will shoot 40 gr bullets subsonic and quiet and cheaper and decided the. Hornady offers a 75 grain and an 80 grain Amax with listed B.C.'s of. It works, doesn’t cycle the rifle but it’s quiet. I tried 3.1 grains of Titegroup under a Nosler 69. 223: I looked on the Hogden site and found a subsonic load: 3.1 grains of Titegroup and a 55 grain bullet. Blackfork is trying to develop subsonic loads for his. 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. On many ranges subsonic ammo will disqualify the shooter due to the danger. 223, Ammunition, ar-15, handloading, rifles, Subsonic, suppresor. Awesome bullet, perfect mushroom at 80 yards. I brought down a 300lb hog at full gallop with one of them. For pig hunting, my most favoritest bestest bullet in a maglength AR is the Swift Sirocco II 75gr. 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. It was just barely sonic and when it got cold in south Texas, it went subsonic but stayed stable. 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″. 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. Once-fired LC brass, Hornady 55 grain SP (soft point) 1030 fps. Moving up in weight to bullets designed specifically for use on deer-size game we come to the 60-grain Nosler Partition and the 75-grain Swift Scirocco. 223 is used for varminting and in action rifle competition. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip insert within its hollowpoint cavity to help it expand reliably at low velocities. The Sub-X bullet used in Subsonic Rifle features a lead core. Quote:case: Lake City Surplus, previously firedĬharge Weight Tested: 4 grains to 14 grains.Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds). As a rule, those weighing 40 to 55 grains are the best bets when the. Subsonic Handgun utilizes tried-and-true XTP bullets that expand reliably at subsonic velocities. Here is his original load data that I saved and used. Posted: 6:23:43 PM EDT 12 Pull a steel cased 55gr Wolf bullet, dump powder put 3. Drops a lot at 100 but is consistent once you know the dope. This is right at 1050 fps out of a 16 inch barrel. 223 Remington 75 Grain Boat-Tail Hollow Point Match Centerfire Rifle. My load is 5.7 gr of trailboss with a 70 gr speer sp. I went heavier than he did as he stopped at 55 grains IIRC. Subsonic ammunition utilizes a Hornady 75gr Jacketed. Loads, there is a member on the Accurate Reloading Forums named Seafire, his data is the data I started out with and it works well since that time I have used his initial load development for loading a wide range of bullets. Give Blue Dot and Red Dot a try, both work really well for reduced 223. If you live in CA, or NY your shipping address must be an FFL address, if it is not your order is subject to. I have been loading and shooting subsonic for years in a 223. All ammo shipments require an adult signature.
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