Welcome to Sub-Silent Suppressors - New Zealand’s LEADING Specialist in Custom Hand Crafted Rim-fire, PCP, CO2 & CENTER-FIRE Suppressors.

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Left: Click photo to view Custom Ruger 10/22 silencer project page – in a new tab.

Right: Click photo to enter Adam’s Ruger Mini .30 Cal. project in a new tab.

 This chart below is ideal for comparing bullet calibres, cartridges and projectiles.  To compare and calculate metric and imperial calibres, you just have to remember that one inch is 25.4mm.  If going from imperial to metric, you multiply 25.4 by the calibre (eg. 25.4 x .30 = 7.62mm).  If going from metric to imperial, you divide the caliber by 25.4 (eg. 9mm divided by 25.4 = 0.354~inches).

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1 .17 HM~2 4.3mm,    2 .17 HMR ~4.3mm,    3 .22LR~5.5mm,    4 .22 WMR~5.5mm,    5 .17/23 SMc,    6 5mm/35 SMc,  7 .22 Hornet,    8 .223 Remington~5.56mm Nato,    9 .223 WSSM,    10 .243 Winchester~6mm Rem,    11 .243 Win (Ackley)~7.62mm,   12 .25-06 Rem~6mm,    13 .270 Winchester~7mm,    14 .308~7.62mm Nato,    15 .30-06 ~7.62mm Nato ,    16 .45-70,    17 .50-90 Sharps

 

CLICK photos to enlarge.