A zoomed-in timescale displays the region of peak sound pressure in Figure 2b, for the first three shots. The primary sound signature pressure histories for all 5 shots are shown in Figure 2a. PEW Science has performed initial evaluation of the SOCOM300 SPS and further testing is planned. Note that the SOCOM762-RC2 is not intended to be a specialized 300 BLK silencer Surefire produces a specialized model (the SOCOM300 SPS) for this use. ![]() Quantitative performance comparisons are provided in Section 6.46.3 of this review. While both silencers achieve similar supersonic suppression performance, the Surefire SOCOM762-RC2 is able to outperform the OSS silencer in subsonic suppression, while still offering users reduced back pressure it traps enough gas with conventional baffle geometry while venting through the stack to reduce back pressure. This subtle distinction between the waveforms emitted from the two silencers highlights the vastly different suppression mechanisms employed by the two silencers. The SOCOM762-RC2, however, is able to suppress the precursor flow such that its occurrence is coupled with the bullet’s endcap exit, as shown in event (2) in Figure 1. During subsonic 300 BLK suppression with the OSS silencer, precursor flow (the pressure measured from compression and subsequent overpressure pulse through the air column in the gun barrel by the bullet prior to bullet exit) was visible and plainly decoupled from the bullet exit event. The back pressure generated by the Surefire SOCOM762-RC2 is relatively low, but not as low as the OSS HX-QD 762 silencer examined in the previous review.
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