Subsonic

Subsonic

FAQ’s about Subsonic Ammunition

Is my rifle ready for subsonic ammunition?

Maybe, But not necessarily. The most important question to answer is what is your rifle twist rate? This dictates how many rpm the projectile will achieve and whether it will stabilize properly without tumbling. A modern factory rifle will most likely have a twist rate to slow to stabilize projectiles. You need a fast twist barrel to get enough RPM. Before you rush out and build a rifle just for shooting subsonic, please know that a fast twist barrel will overspin super sonic ammunitions.

Does Barrel Length Matter?

Yes, it’s extremely important. Velocity is created by building pressure behind your projectile. Longer barrels keep that pressure contained longer, therefore creating higher velocities. So say you load ammo to 1100fps in your 16″ barrel and then shoot it in your 22″, 24″, or 26″ you’re going to build more pressure, increase the velocity, and no longer have subsonic ammunition

Will I need to adjust my rifle to shoot subsonic ammunition?

Yes, you will need to zero your scope for your ammunition and a change your zero if you switch back to supersonic ammunition. This is know as Point of Aim Vs. Point of Impact. For example. A 308 Winchester shooting a 208gr Hornady ELD-M at 2500fps will drop 4″ or so from 100-200 yards. However, if you shoot the same projectile subsonic at 1050fps you will drop 33″ from 100-200 yards. This means you will shoot “Low” on the target if you put subsonic ammunition through your rifle with a 100yd zero for supersonic ammunition. So you will need to adjust your scope to accommodate for these differences.

Does Copper Creek make subsonic ammunition?

Yes, We can make subsonic in most cartridges, however please read and consider all the information above and after this period. You’ll need to know your rifle twist and length of your rifle barrel for starters. Check your manufacturers website for your twist rate if you don’t know it already. If your manufacturer does not explicitly state the rifle is for subsonic ammunition, it most likely won’t stand chance of stabilizing subsonic ammunition.

This ammunition is loaded to order

Please use the form below to submit your quote request, we will get back to you with pricing and availability for your request.

Please note, the picture is just a picture, it’s not a representation of your quote, and you shouldn't buy ammunition by sight anyways.

If you have a recipe you'd like us to replicate you can tell us here!

The Full Article about Subsonic Ammunition can be found here:

Ammunition University Subsonic Ammunition

Subsonic

Subsonic

FAQ’s about Subsonic Ammunition

Is my rifle ready for subsonic ammunition?

Maybe, But not necessarily. The most important question to answer is what is your rifle twist rate? This dictates how many rpm the projectile will achieve and whether it will stabilize properly without tumbling. A modern factory rifle will most likely have a twist rate to slow to stabilize projectiles. You need a fast twist barrel to get enough RPM. Before you rush out and build a rifle just for shooting subsonic, please know that a fast twist barrel will overspin super sonic ammunitions.

Does Barrel Length Matter?

Yes, it’s extremely important. Velocity is created by building pressure behind your projectile. Longer barrels keep that pressure contained longer, therefore creating higher velocities. So say you load ammo to 1100fps in your 16″ barrel and then shoot it in your 22″, 24″, or 26″ you’re going to build more pressure, increase the velocity, and no longer have subsonic ammunition

Will I need to adjust my rifle to shoot subsonic ammunition?

Yes, you will need to zero your scope for your ammunition and a change your zero if you switch back to supersonic ammunition. This is know as Point of Aim Vs. Point of Impact. For example. A 308 Winchester shooting a 208gr Hornady ELD-M at 2500fps will drop 4″ or so from 100-200 yards. However, if you shoot the same projectile subsonic at 1050fps you will drop 33″ from 100-200 yards. This means you will shoot “Low” on the target if you put subsonic ammunition through your rifle with a 100yd zero for supersonic ammunition. So you will need to adjust your scope to accommodate for these differences.

Does Copper Creek make subsonic ammunition?

Yes, We can make subsonic in most cartridges, however please read and consider all the information above and after this period. You’ll need to know your rifle twist and length of your rifle barrel for starters. Check your manufacturers website for your twist rate if you don’t know it already. If your manufacturer does not explicitly state the rifle is for subsonic ammunition, it most likely won’t stand chance of stabilizing subsonic ammunition.

This ammunition is loaded to order

Please use the form below to submit your quote request, we will get back to you with pricing and availability for your request.

Please note, the picture is just a picture, it’s not a representation of your quote, and you shouldn't buy ammunition by sight anyways.

If you have a recipe you'd like us to replicate you can tell us here!

The Full Article about Subsonic Ammunition can be found here:

Ammunition University Subsonic Ammunition