If the scope manufacturer assures waterproofness without the caps then they can be left off.
From memory my Kahles 3-9x42 Helia CT needs its caps on to be watertight, so they stay on !
Type: Posts; User: 7mmsaum
If the scope manufacturer assures waterproofness without the caps then they can be left off.
From memory my Kahles 3-9x42 Helia CT needs its caps on to be watertight, so they stay on !