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50mm vs 42mm

 
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  #1  
Old 01-10-2010, 09:21 PM
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Join Date: Feb 2004
Location: ERIE, PA
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50mm vs 42mm

Im just starting out upgrading my savage model 16"s optics, but i cant make up my mind between the nikon monarch 3 x 12 x 42 or the 4 x 16 x 50. I know that with the 50mm that the scope will be higher, but what are any other advantages or dis-advantages of either that this newbie might not know or thought of. The gun is a 300wsm that is used for deer & elk hunting mostly, but i also shoot alot of targets and woodchucks in the summer practicing. The gun is also going to the shop for some tunning and a new barrel this spring. Just figguerd i would see what you guys suggest before i shell out the 400 George Washingtons that i have been saving by packing my lunch the last 2 months. Please dont tell my wife, she gives me my lunch money every day !!! Thanks.....J.R.
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Old 01-10-2010, 10:10 PM
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Re: 50mm vs 42mm

Well in my opinion you can't beat the 50mm.Much better relative brightness.This helps in early morning&late evening hunting.The light gathering factor can be seen if you go to a store and look at the same model scope and compare before u buy. Some will say the large objectives are bulky &heavier.Those few onces are worth the exta in sight picture. Dskiper
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Old 01-11-2010, 12:39 PM
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Re: 50mm vs 42mm

I have a 4-16X42 and love it. I imagine the 4-16X50 would be even better.
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Old 01-13-2010, 01:39 PM
NJS NJS is offline
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Re: 50mm vs 42mm

Quote:
Originally Posted by tpbscha View Post
I have a 4-16X42 and love it. I imagine the 4-16X50 would be even better.


In our society bigger is better... right? Well not always... The difference in the image from a 42mm scope and a 50mm scope is only barely noticeable the last couple of minutes in the early morning or late evening. If you do a lot of shooting or hunting at night or the first or last minutes of the day I'd go for a 50mm objective. If not, you are paying for capabilities you won't use, plus the negatives of higher mounting, larger & heavier unit, and additional cost. Unless you hunt at night, I'd stick to the 42mm size objective. NJS
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Old 01-13-2010, 05:26 PM
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Re: 50mm vs 42mm

Quote:
Originally Posted by NJS View Post

In our society bigger is better... right? Well not always... The difference in the image from a 42mm scope and a 50mm scope is only barely noticeable the last couple of minutes in the early morning or late evening. If you do a lot of shooting or hunting at night or the first or last minutes of the day I'd go for a 50mm objective. If not, you are paying for capabilities you won't use, plus the negatives of higher mounting, larger & heavier unit, and additional cost. Unless you hunt at night, I'd stick to the 42mm size objective. NJS
Good response - I'd add this:

Ideally, during low light use you would want an exit pupil of about 6mm. In the 42mm objective that would be achieved with the power set on 7X. With a 50mm objective scope that would be achieved with the power set on 8.3X.

Sooo.. you could get the same amount of usable light from either scope except that the 50mm will allow you to get it at slightly higher magnification. Naturally, the comparison assumes that the two scopes are essentially the same except for the size of the objective lens.
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Old 01-13-2010, 05:41 PM
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Re: 50mm vs 42mm

Save your bucks and go with the 42mm for the same reasons as others have mentioned. IMHO a few extra minutes in the am/pm isn't worth it.
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  #7  
Old 01-13-2010, 08:10 PM
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Re: 50mm vs 42mm

Thanks for the info guys. Im going to go shopping with the boys this weekend and try & decide on which one......j.r.
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