Sierra .338 Lapua
- Weight: 31 oz. Overall length: 9.5 in.
- Exterior diameter: 1.625 in.
- Rifle used in test: Accuracy International w/ 27 in.
- Ammunition used: Sierra Match with 250 grain bullets @ 2,950
- Ambient temperature: 71° F -Potomac, Montana, at 3,950 ft.
above sea level
- Humidity 30.2%
"Original 11" Sierra
Sound Pressure Level Reduction: 33 db
The 9.5" Sierra is a magnum class, very robust, thread-on can
suppressor that is used for .338 RUM and .338 Lapua Magnum
cartridge rifles. The Sierra is used extensively by law
enforcement, military and other serious shooter communities.
Our Sierra suppressor has been an outstanding rock star in the
shooting world. We have received numerous reports from many sources
stating that our .338 Lapua Sierra suppressor is much quieter than
other manufacturers' .308 suppressors.
Thread: Sierra suppressor threads are available in M18x1,
3/4x20, and 3/4x24. Other thread sizes are available.
Using the described procedure for measuring sound, the actual
sound pressure level reductions and specifications of our sound
suppressor models are presented below.
All Arabic numeral "1" sound suppressors are specifically
designed for law enforcement and military tactical
Users frequently complain about a change of the point of impact
between a rifle with and without a sound suppressor installed. This
is most often a function of the inherent stiffness of the rifle's
barrel, not the sound suppressor. We offer the service or will
instruct the customer in how to time out the suppressor to the
weapon. This procedure will minimize the change of windage point of