really not a good idea to go plinking on any public land, DOC or otherwise. very fast way to give the shooting community a bad name, and quite possibly meet your local armed offender squad...
if you just want to plink, and maybe do the occasional competition, then join your local NZDA, and shoot at their range
or, find suitable private land where you can shoot with permission. most lifestyle and semi-rural areas seem to be ok shooting subsonic 22 with a can (with permission of course).
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