![]() This would be a major draw for me if they did cycle and it would help me overlook the hefty prices for this ammo and pistol. Has anyone tried subsonics in the pistol and had them cycle reliably? Even being a blowback it is still designed to manage and cycle based on full power rounds and could have problems with a suppressor and lower powered rounds producing less force to overcome the springs? I do like the idea of having 50 rounds in the PS90 where the first 10 or so are subs then 40 supers to follow it up or having 3 or 4 subs in a pistol with 17 full power ones waiting to go. Even a 240gr 300BLK moving the same speed is hit or miss getting through soft armor and it has over 4 times the energy. 22LR size and power so any vest that can be defeated by a. I would seriously doubt any 55gr bullet going 1,000fps would get through soft armor. Our friendly experienced staff can help you directly. Has anyone tried running subs and supers through the same rifle without modifications and got reliable cycling? Buy Ammunition > Centrefire > 223 Remington - Gun City are the leading firearms experts in New Zealand. 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.View QuoteInteresting take on the 5.7 and PS90. 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. 6.5 Grendel.22 Long Rifle.223 Rem / 5.56 6.5 Creedmoor.308 Winchester 300 Blackout. 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. The good news is that the whole thing is much less. Sellier & Bellot 9mm 140 Grain FMJ Subsonic 1000 Rounds 399. Subsonic ammunition is more and more in demand these days, but there is still a lot of confusion about it. 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. PMC 223A Bronze 223 Remington Ammo 55 Grain FMJ Ammo Specifications: Caliber. 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. 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. PMC 223 Rem Ammo - 1000 Rounds of 55 Grain FMJ-BT Ammunition 479.99 434.99 10 Reviews 84 In stock now Add to Cart 1000 Rounds 43.5¢ per round Made by PMC PMC 223 Rem Ammo - 1000 Rounds of 55 Grain FMJ-BT Ammunition in Battle Packs 464.99 1 Review 59 In stock now Add to Cart 1000 Rounds 46. Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds).
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