In the case where the rifle doesn't cycle properly, we have found that the installation of our Flatwire Buffer Spring easily solves the problem. Function has been flawless in nearly all gas-impingement operating systems without any system modifications. We have tested this ammo in various semi-automatic firearms based on the AR-10/SR-25 platforms. That means 2-Hole projectiles will have maximum energy available, while remaining subsonic at the muzzle. We have tested 2-Hole in longer-barreled bolt-action rifles and have loaded this ammo to what we consider maximum, reliable subsonic velocity. Subsonic velocities are assured in a wide range of environments due to the temperature-insensitivity of the propellant and the precise propellant charge weight. NOTE: This ammunition is designed for suppressed 308 semi-automatic usage.
When looking at groups on the target it is easy to distinguish each bullet's impact. The trailing, second bullet is constructed as a wadcutter/full-diameter/open-tip. The front bullet is designed to shoot smaller groups and is assigned the designation of the ammunition's "zero". Projectile lengths are optimized to be compatible with 1-12 and faster twist rate barrels. This means that you can shoot subsonic and supersonic loads out of the same magazine with no other special considerations. 308 Winchester based semi-auto platforms with no modifications.
These bullets impact in very close proximity to each other, delivering dramatic results.ĭesigned to function and fully stabilize in a. Our 2-HOLE SUBSONIC ammo features TWO specially configured projectiles having a combined total weight of over 350 grains. The moral here is that match/subsonic ammo will work in a lot more semi-autos than people think, but you have to run them wet to keep friction to a minimum.ABSOLUTE 2-HOLE is a radical advancement in extreme impact subsonic ammunition. It's fortunate I tried it the first time with a cleaned and well oiled unit, as I would otherwise not have tried it again as I would have doubted it could have made that much difference. I was at my father in laws so I oiled the beejeezus out of it with some 10 weight oil he had in an oiler in his shop and had at it again - with 100% reliability. The next time with the same conversion unit but uncleaned, unoiled, and sitting in the range bag for a week, it failed to fully eject the spent round 100% of the time. The first time I did this with a just cleaned and re-oiled conversion unit, it functioned flawlessly with 100% reliability.
SUBSONIC ROUNDS PLUS
Plus (1050 fps) for some very inexpensive yet effective offhand and sitting practice. The term subsonic confuses too many folks.Ĭlick to expand.How they are maintained makes a difference as well.įor example, I recently started using my A2 Match rifle with a CMMG conversion kit with SK Std. I wish we would call them by a different name (like 'sub-1000' ammo) to easily differentiate what kind of ammo we are talking about. All are, of course subsonic, but usually of such low power that they will not function in semi-autos. These generally (but not always) use lighter bullets (20 to 29 grain) at speeds in the 500 to 800 fps. In the last few years, there has been a huge increase in the popularity of 'sub- 1000 fps' rounds. These rounds have bullets that usually travel in the 1050 to 1100 fps range and generally function just fine in most semi-autos. It used to be that the term generally applied to 36-40 grain bullets traveling just below the speed of sound, as most target ammo does and some long rifle hunting rounds such as Remington Subsonics, Lapua Subsonic Hollow Points, etc.
As a previous poster indicated, the term 'subsonic' is really too broad a descriptor for.
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