7/9/2023 0 Comments 9mm subsonic rounds![]() ![]() On the flip side, I’ve had very few issues with the Freedom Munitions standard 147 grain product. Because of these challenges, I would stick to using the HUSH ammunition in pistol caliber carbines only. 9mm 147 Grain FMJ Flat Subsonic Magtech 9G - 50 Rounds 30.95 21.49 Add to Cart Compare 9mm 115 Grain FMJ Magtech 9A - 50 Rounds 22.95 14. ![]() If I rested the frame of the USP on a sandbag, most of these malfunctions could be avoided, but obviously such a “fix” is not really practical. 9mm, for example, is generally considered supersonic as most 9mm ammo has a muzzle velocity over 1100 FPS. With my USP at the range, I found the ammunition’s lack of power to be a real issue when I was not using my Octane 45 and any sort of looseness in my wrists consistently resulted in stovepipe failures. Subsonic ammunition is loaded specifically for the projectile to maintain a speed that does not break the sound barrier and create a sonic crack. Good To Go 9mm Parabellum/Luger Subsonic ammunition is designed to operate at speeds less than the speed of sound, which avoids the bullet making a. In general, subsonic ammunition is designed for use in firearms that are suppressed, or silenced. The term subsonic means below sonic, or below the speed of sound. By this I mean that it barely has enough power to cycle most pistols’ slides. Subsonic ammunition is ammunition designed to operate at speeds below the speed of sound. One of the first things I noticed about the HUSH ammunition is that it is right on the reliability borderline for use with handguns. Intrigued, I had to see if the 165 grain HUSH 9mm was worth its considerable premium (roughly $7 per box of 50 rounds). Federal American Eagle 9mm Subsonic Ammo Using 124-grain projectiles, Federal American Eagle subsonic ammo travels at 1,030 feet per second. The HUSH line also uses faster burning powder that is supposed to be quieter than the type used in their standard 9mm products. One of these new offerings is a 165 grain 9mm loading that pairs new brass cases with FMJ pills from Freedom’s sister company, X-Treme Bullets. While Freedom Munitions has offered subsonic, 147 grain 9x19mm ammunition for quite some time, the company recently introduced their new “HUSH” line of subsonic product.
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