Barrel Heat Affecting Scope?


Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Optics & Mounts > Barrel Heat Affecting Scope?

Reply
 
LinkBack Thread Tools Display Modes
Old 09-26-2009, 03:19 PM   #1
Feedback Score: 0 reviews
 
Join Date: Jun 2009
Posts: 11
Default Barrel Heat Affecting Scope?

I mounted a Nikon scope onto my .223 and the objective lens is about 1/16th of an inch above the barrel. When the barrel heats up will this cause damage to my scope? I searched the forums but couldn't find an answer. Thanks for any help...

-mmhoium



__________________
mmhoium is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 09-26-2009, 04:38 PM   #2
Feedback Score: 0 reviews
 
RL357Mag's Avatar
 
Join Date: Apr 2008
Location: Albany,New York
Posts: 3,251
Liked 5 Times on 5 Posts

Default

Quote:
Originally Posted by mmhoium View Post
I mounted a Nikon scope onto my .223 and the objective lens is about 1/16th of an inch above the barrel. When the barrel heats up will this cause damage to my scope? I searched the forums but couldn't find an answer. Thanks for any help...

-mmhoium

As long as it's not in direct contact with the barrel you should be fine. The only effect you will notice is convection currents caused by the heat, which may or may not interfere with your aiming. It would take much more contact than from one point on the objective bell, over a long time to cause seal leaks or lens separation. The epoxy's used in lens assemblies today are much more tolerant of heat and shock than they were years ago, as are the seals in the scope tubes which prevent nitrogen leaks.


__________________
Guns Have Only Two Enemies-Rust and Politicians
"The United States Constitution (c) 1791 - All Rights Reserved"
If Guns Kill, Do Pencils Mis-spell Words?
Pain is Weakness Leaving the Body - USMC
"Qui desiderat pacem, praeparet bellum"

Last edited by RL357Mag; 09-26-2009 at 04:43 PM.
RL357Mag is offline  
 
Reply With Quote
Old 09-26-2009, 04:43 PM   #3
Feedback Score: 0 reviews
 
Join Date: Jun 2009
Posts: 11
Default

Thanks for the help!

__________________
mmhoium is offline  
 
Reply With Quote
Old 09-27-2009, 12:42 AM   #4
Feedback Score: 0 reviews
 
mrm14's Avatar
 
Join Date: Jan 2009
Location: Sacramento, California
Posts: 2,389
Liked 314 Times on 209 Posts
Likes Given: 27

Default

The barrel heating will not affect modern scopes, however, the heating of the barrel will affect the accuracy of the rifle in adverse ways especially if it is a stock barrel and you are shooting for longer range accuracy.

__________________
mrm14 is offline  
 
Reply With Quote
Old 09-27-2009, 01:15 AM   #5
Feedback Score: 0 reviews
 
Join Date: Mar 2008
Location: I see you, and you will not know when I will strike
Posts: 24,301
Liked 3479 Times on 1609 Posts
Likes Given: 3590

Default

mm - You would have to be doing a TON of shooting, on a hot day, to even see the heat from the barrel in the glass ( convection like RL is talking about ). Even if your barrel is pencil thin, it would take a lot to heat the outside of the barrel to the point of giving off "excessive" heat. We are talking thousands of rounds of sustained or heavy fire.

If the day is that hot, I would be more worried about mirage downrange than the heat from the barrel.

Almost all modern scopes have coatings on the lenses that are applied to resist scratches and by products from firing, including "barrel heat".

I think you will be just fine.

JD

__________________
Dillinger is offline  
 
Reply With Quote
Old 09-27-2009, 01:58 AM   #6
Feedback Score: 0 reviews
 
masterPsmith's Avatar
 
Join Date: May 2009
Location: Barstow area, Kalifornia
Posts: 1,347
Liked 89 Times on 67 Posts
Likes Given: 25

Default

I chimed in a little late, but, "NO" it will not affect your scope at all. I thought I'd make it a short answer..........

Jim..................

__________________
masterPsmith is offline  
 
Reply With Quote
Old 09-27-2009, 05:42 AM   #7
Feedback Score: 0 reviews
 
layton's Avatar
 
Join Date: Jul 2009
Posts: 568
Liked 1 Times on 1 Posts

Default

If you are firing for effect, then the heat will affect shot groups,You only want to fire 3/5 rounds, then let the barrel cool to touch, then fire the next series.

Layton

__________________
layton is offline  
 
Reply With Quote
Old 09-27-2009, 05:44 PM   #8
Feedback Score: 0 reviews
 
Join Date: Oct 2007
Location: Stafford, Virginia,The state of insanity.
Posts: 14,043
Liked 34 Times on 29 Posts

Default

You may see heat waves in the scope if it is of a higher power. I had a 36x scope on my 223 for a while and abut abotu 10 ot 12 shots I could see the heat and on a hot day in the virginia sun I could hardly see a target.

A lot of it has to do with the power of your scope. If you are running the boring 3-9x40mm scope then I highly doubt you will see any differance. If youa re running a 36x or something like a nightforce 12-42x56mm then yes your going to see a differance at longer ranges.

__________________
cpttango30 is offline  
 
Reply With Quote
Old 09-27-2009, 06:01 PM   #9
Feedback Score: 0 reviews
 
Join Date: Dec 2007
Posts: 7,152
Liked 22 Times on 7 Posts

Default

Quote:
Originally Posted by RyanG23 View Post
I don't have an answer either and don't wanna tell you anything incorrect, but I do have a question. do you have a picture to show your mounted nikon scope on your .223?
Why do you ask for folks to put up pictures in nearly every post you make? Are you working for the administration, documenting us evil gun owners and the toys we have?
__________________
NGIB is offline  
 
Reply With Quote
Old 09-27-2009, 06:18 PM   #10
Feedback Score: 0 reviews
 
Join Date: Jun 2009
Posts: 11
Default

Haha, agreed on the picture comment...

It is a "boring 3-9x40" scope, at least for now. I'm poor so I can't afford the nightforce just yet. But it is a Nikon scope going on a SU-16CA so I don't imagine that I will be pounding out hundreds of rounds a minute. And I hate high rise rings, but I didn't want to mess up a new scope either. Thanks everybody for the input!



__________________
mmhoium is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Picatinny rail for Mossy 500 w/ heat shield... supergus General Shotgun Discussion 5 07-11-2009 11:59 PM
Heat Seeking Bullets! OH KNOEZ!!! gregs887 The Club House 6 03-26-2009 10:31 AM
Eye in the Sky: New Flying Laser Will Stop Heat-Seeking Missiles sculker The Club House 0 05-22-2008 10:25 PM
Canned Heat! Samhain General Handgun Discussion 2 03-10-2008 03:20 AM