Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Long Range Scopes and Other Optics

Long Range Scopes and Other Optics Nightforce Optics


Reply

Real bad heat mirage

 
LinkBack Thread Tools Display Modes
  #1  
Old 03-28-2005, 06:53 PM
Silver Member
 
Join Date: Feb 2004
Location: Madison, WI
Posts: 171
Real bad heat mirage

I was shooting on the 100 yard line this past sunday, temp was around 45 (which is real warm, compared to earlier weeks). Anyways, I was shooting my 6.5, which has a Weaver T-36 on top. The heat mirage was so bad, I could barely get a bead on the target. I don't remember ever having this problem during the summer, so I'm at a loss. Could it have something to do with the sun/warm weather and the still frozen ground? I noticed slight mirage with my 8x Leopold(edit: it was barely noticeable, not even a problem), but it was horrible with my 36X scope. Any thoughts?
Reply With Quote
  #2  
Old 03-28-2005, 07:41 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,204
Re: Real bad heat mirage

My explanation is that mirage is caused by the temp difference between the surface and the air above it. The greater the difference the more the mirage. This explanation works for me during the summer here in Idaho.

However, I haven't figured out what the deal is in the winter. Mirage is as bad as in the summer, at times.

36X is pretty much useless with heavy mirage. When I was shooting a 26 Leupold on a 222 40X @ 100 & 200 it gave me fits in the afternoon. About 10X maybe 16X is as about as much when mirage is running.

HTH, at least a little bit.
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
  #3  
Old 03-28-2005, 08:54 PM
Gold Member
 
Join Date: Nov 2004
Posts: 877
Re: Real bad heat mirage

Roy hit the nail on the head.
Its not the temp, its how much the sun heats the ground.
I shot back in December, 20 degrees, then the sun came out. My 5" of black bullseye at 400yds flat disappeared. Wild stuff, but it happens!
Reply With Quote
  #4  
Old 03-31-2005, 09:42 AM
Silver Member
 
Join Date: Jan 2005
Location: Suffolk,.UK
Posts: 154
Re: Real bad heat mirage

I read somwhere that heat from the barrel can cause a mirage that makes the sight picture appear to move?

Jeza
Reply With Quote
  #5  
Old 03-31-2005, 09:49 AM
Silver Member
 
Join Date: May 2004
Location: southeast michigan
Posts: 495
Re: Real bad heat mirage

...you're correct ...often in benchrest you'll notice "shields" attached to the barrels to prevent mirage in front of high magnification scopes...
Reply With Quote
  #6  
Old 03-31-2005, 12:59 PM
Silver Member
 
Join Date: Feb 2004
Location: Madison, WI
Posts: 171
Re: Real bad heat mirage

As said, you are correct, but it would take quite a few shots to warm up the Lilja that bad.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Real bad heat mirage
Thread Thread Starter Forum Replies Last Post
Is the site loading real real slow for anyone else? ICANHITHIMMAN General Discussion 14 02-07-2011 09:00 AM
A Real Man in a Real Truck! Eaglet General Discussion 17 05-06-2009 07:10 PM
Hey from AZ...home of the heat ryandetailer Member Introductions 2 04-04-2009 08:08 PM
shooting in the heat? oldfamily Long Range Hunting & Shooting 18 07-22-2006 01:59 PM
Rifle barrel heat mirage deflector... Pete K. Long Range Scopes and Other Optics 1 04-13-2005 10:54 PM


All times are GMT -5. The time now is 06:03 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC