telf Posted December 2, 2015 Report Share Posted December 2, 2015 hi all im thinking of upgrading my scope(going back on all ive said before) to a meopta,the tube size on the meopta is 25mm,whereas the scopes i have at the moment are 30mm,is there any advantage in the bigger diameter or not Quote Link to comment Share on other sites More sharing options...
Wingman Posted December 3, 2015 Report Share Posted December 3, 2015 Light transfer will be better with the larger tube size so better in low light conditions. That said alot depends on the quality of the optics and Meopta are excellent. I had a 25mm Schmidt and Bender on my Blaser LRS2 for a while and it was fine in pretty dim conditions so if its a top quality scope there shouldn't be a vast difference. Really depends on what its used for and conditions. Quote Link to comment Share on other sites More sharing options...
matone Posted December 3, 2015 Report Share Posted December 3, 2015 30mm is to allow greater windage & elevation travel for the 5 mile sniper gang.Doesn`t improve light transmission. Quote Link to comment Share on other sites More sharing options...
Savhmr Posted December 3, 2015 Report Share Posted December 3, 2015 (edited) Light transfer will be better with the larger tube size so better in low light conditions. That said alot depends on the quality of the optics and Meopta are excellent. I had a 25mm Schmidt and Bender on my Blaser LRS2 for a while and it was fine in pretty dim conditions so if its a top quality scope there shouldn't be a vast difference. Really depends on what its used for and conditions. Sorry, but that is not right. Tube size has little to do with light transmission and everything to do with increasing the amount of adjustability in the erector tube for windage and elevation. You get more adjustment in a larger tube. Light transmission is a factor of other things like lens quality, twightlight factor, lens coating quality and size of image captured at ocular in relation to your pupil size (7mm being optimal). Edited December 3, 2015 by Savhmr Quote Link to comment Share on other sites More sharing options...
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