I have both, in CZ bolt actions, same barrel length, same size gunworks suppressor for each but in their respective calibre.
I would be inclined to say that the HMR actually suppresses better than the WMR. They definitely have different noise frequencies (HMR higher, WMR lower) which does seem to influence the sound travel (think bass v treble when the yuppies are driving down the road with their windows down blaring out some rubbish they think is music). Lower frequencies seem to travel further.
HMR is inherently more accurate than the WMR, and a lot less drift in the wind, and most importantly if you are shooting in close proximity to houses, less prone to ricochets. The ultimate for this situation - .17HM2
Less noise than the HMR, with 80-90% of the HMR ballistics, and low ricochet potential.
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