Visit the SWFA.com site to check out our current specials. |
Leupold mark 4 TMR, mil-accurate magnification |
Post Reply |
Author | |
puppezed
Optics GrassHopper Joined: December/31/2008 Location: Finland Status: Offline Points: 44 |
Post Options
Thanks(0)
Posted: October/15/2009 at 07:47 |
I cannot find information from Leupold website regarding the Mark 4 TMR (second focal plane) reticle subtensions on different magnifications. Could someone tell the mil-accurate magnifications for 6.5-20x and 8.5-25x Mark 4 TMR scopes, so the subtensions would be like presented in the image below (0.5 mrad between a large and a small line and 1.0mrad between two large lines). |
|
Dale Clifford
Optics Jedi Knight Joined: July/04/2004 Location: United States Status: Offline Points: 5087 |
Post Options
Thanks(0)
|
The problem is -- you will have to find out if the magnification reading is really that magnification by placing a known ht. object at a known distance. The relationship is linear such that the subtension expressed by the highest power will be some ratio or fraction of that based on the magnification.
|
|
puppezed
Optics GrassHopper Joined: December/31/2008 Location: Finland Status: Offline Points: 44 |
Post Options
Thanks(0)
|
I asked the same question on other forums too: both scopes are mil-accurate on their maximum magnification.
|
|
Dale Clifford
Optics Jedi Knight Joined: July/04/2004 Location: United States Status: Offline Points: 5087 |
Post Options
Thanks(0)
|
Thats the point-- only on the max. magnification. If you turn down the power to say 10 power it doesn't really mean that its really 10 x, you must measure the subtension of a known ht. object at a known distance on the power -- if you are using a top of 20x and it shows that the target (using a target of 1 mil subtension) subtends 1 mil at 100 yds, and you turn the power down to 14 and it subtends 1/2 mil then the 14 marking is really 10x.
|
|
puppezed
Optics GrassHopper Joined: December/31/2008 Location: Finland Status: Offline Points: 44 |
Post Options
Thanks(0)
|
Thanks for the tip.
I just wanted to know what was the correct magnification for the scope to be mil accurate. Like Bushnell claims their 4200 Tactical is mil accurate at 12x, Leupolds are mil accurate on their maximum magnification. |
|
0311GRUNT
Optics Apprentice Joined: November/14/2009 Status: Offline Points: 88 |
Post Options
Thanks(0)
|
Exactly correct. I had this same question when I started using mil-dot based systems and some buddies over in 29 palms with Raven Plt (1/7 Snipers) said to correctly coralate the mil-magnification you must "measure with known distance and target to make approximations about that particular piece. Oh bye the way he personally uses US OPTICS. |
|
You cant hit what you cant see
|
|
sscoyote
Optics Journeyman Joined: October/05/2004 Status: Offline Points: 328 |
Post Options
Thanks(0)
|
My 8.5-25x TMR is supposed to be accurate at 25x. Haven't measured mine, but i will as soon as i get it back from my buddy.
|
|
Steve
|
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |