Any good quality fine 100% cotton wool can be used. If the cartridge volume is even bigger such as with the 30-06 cartridge it may be even more difficult to find consistent loads.įiller Materials: Best practice is to use filler materials to compensate for excess case volume. In such a case either a very small amount of propellant is required or a much slower burning speed powder may be used. The 308 Win is a good example, however the case volume far exceeds the space required to propel a bullet to subsonic velocities. Fortunately it is also possible to create subsonic bullets and loads for existing rifle types that have been around for many decades. Smaller cartridge volumes are ideal for subsonic bullet application as pointed out above. As a bullet manufacturer we are mostly concerned with selecting the correct bullet for a given twist barrel. Rifle manufacturers consider many factors other than bullet weight in deciding a barrel twist. Heavier bullets require a faster twist hence the popular twist for 300 AAC Blackout is 1:8 and may be as fast as 1:5. In general it is ideal for a subsonic bullet to carry more weight in order to regain some of the lost kinetic energy due to the very low velocity.
We also have a subsonic hunting bullet for AK47 type rifles (7.62×39) In Europe the 300 Whisper cartridge gained popularity before the 300 AAC Blackout came about. Over time more speciality type rifles may appear. One example is the well known 300 AAC Blackout cartridge available in AR15 type configuration, in bolt action and also as a single shot rifle. Rifles that were specially created for subsonic bullet application contributed hugely to the sudden popularity. In recent times the popularity of Subsonic bullets increased dramatically. Peregrine Subsonic Bullet Series – Reloading Information for Semi-auto’s and for bolt action rifles
Load data subsonic 223 how to#
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