#ARE SUBSONIC ROUNDS MORE ACCURATE FULL#

Not long afterward, its performance specs were impressive enough to be adopted by the military, and it saw heavy use in Vietnam before being replaced by lighter loads.Įven though widespread use of the NATO version for infantry was short-lived (replaced by the M16/5.56 combo), the. Introduced in in 1952 where it quickly became a staple in the American hunting world. 308 Winchester is steeped in both hunting and tactical traditions. The bullet weights for these rounds can also vary pretty dramatically depending on their intended use.308 Winchester The 300 BLK is available in both subsonic and transonic velocities, as you would imagine, it means that the 300 BLK can serve several purposes. When looking at 300 BLK ammunition, there is a wide range in performance. 300 BLK has assimilated into so many corners of the shooting community from special ops, competition shooters, home defense, and even hunting. 300 AAC Blackout was the solution to these problems. The military had been using a standard 9mm round, but special-forces units were sometimes dissatisfied with the performance of the round. For short range work, the 5.56×45 NATO just didn’t have the right performance characteristics such as high velocities and horrible noise and flash in close quarter environments. 300 AAC Blackout was to produce a round that could match the performance of enemy soldier’s firearms, particularly the 7.62×39 round, and still be used in a short barrel, AR platform with its standard capacity. 300 AAC Blackout was introduced in 2011 by the Advanced Armament Corporation. Instead, by looking at their respective performances in certain categories, we will be able to determine in which situations, you might lean towards one cartridge over the other. This is not your typical cartridge comparison where we will fool heartedly pick one cartridge as better than the other. We will see pretty varied performances in multiple categories, and we will also see their performance makes both of them excellent options for certain shooting applications. We will take a look at these two cartridges and stack them up side by side to look at various performance specs. This will be an interesting comparison because of how different these two cartridges are, and it is a great example of why you are better off running with multiple types of cartridges to fill different shooting needs. 308 caliber bullets but tend to hang out in different places. 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.In this cartridge comparison, we are going to take a look at the. 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. 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.

#ARE SUBSONIC ROUNDS MORE ACCURATE FULL#

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 9″-12″ low at 100 yards. It will shoot fine if you manually cycle the bolt.

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. Our top selling 223/5.56 SUBSONIC round (priced per 100 rounds).

Are subsonic rounds more accurate