Simon & John,
I've just bought a 20mw laser + a mounting device for the scope. If I hand hold the laser, in cold conditions it holds it's strong beam for a long time (1 min) but if I mount it on the scope, the lower section of my 12"LB and it's left off for a few minutes the beam is very weak and does not get any brighter.
Now I know batteries don't like cold conditions, but the instructions on the laser says " does not work well under 15C "
I'm thinking of insulating the laser or heating the tube.
I'll let you know how it works
