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

Please explain R2 reticle advantages.

 
LinkBack Thread Tools Display Modes
  #8  
Old 01-05-2004, 05:36 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: Please explain R2 reticle advantages.

I figured you understood it thuroughly, I just wanted to say even with my NF, I don't trust not doing it and that I really have had great results dialing this way. [img]images/icons/smile.gif[/img]

Unless I'm in dim light conditions where this rangefinder works best, I'm limited to how far it works. That, and I don't practice out beyond 1200 yards anyway, and then practice beyond 1000 is not enough for me to say I'm comfortable hunting there yet.

Out to 1000 yards I've held over with the R2 and dialed both, I can say I've seen no difference, just that the way my rifle is zeroed on the main crosshair at 100 yards, at 600-1000 yards I'm quite a ways off the center using holdover, where you are not. Canting the rifle becomes less critical for you as it increases for me, as the referance bar I'm using is aways away from optical center, and you are much closer.

As for cold weather, most of this back and forth between the two methods were all done during the summer time, not very cold at all, so I guess I could, and should check it again here while it COLD, real cold.

Do you think I'll come up short, need to dial more in, or the opposite?

The one load I tested here when it was cold, I never did test it yet with the R2, but it did take less MOA. I just figured the JLK might be shooting faster, as it did increase over the Berger a little in MV when it settled in. I'll match 'em up next time I'm out and see what turns up, about zero deg out today.
__________________
Brent Moffitt
Reply With Quote
  #9  
Old 01-05-2004, 06:01 PM
Silver Member
 
Join Date: Nov 2002
Location: St. Louis
Posts: 189
Re: Please explain R2 reticle advantages.

You know, Brent, the only target I remember clearly from my tests last January is one where I dialed down 1/2 MOA in elevation on the NF, and it gave me between 3/4 and 1 minute of POI shift that would creep back up where it should be by the third shot.

The reason I remember this so vividly is that when you use the R2 the way I do, you absolutely must have a perfect zero. If the center of your group is 1/2 MOA off at 600, you are hosed the farther out you go...

I was driving myself crazy trying to get perfect zero when I realized I just needed to put a few downrange each time I made an adjustment to take care of the issue!

Other than that, I got all kinds of crazy results with the other scopes that only served to prove the concept to me, and I quit.

I'll be amazed and pleasantly suprised if you don't find the same thing. But even so, the benefits of a system that requires no interaction from the shooter are still there, and would keep me on the dark side!
__________________
STL. Principal Consultant and Managing Partner - Association of Bifurcated Tangential Ballistic Apologists, LLP.
Reply With Quote
  #10  
Old 01-05-2004, 06:44 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: Please explain R2 reticle advantages.

I'm kind of surprised that when you dialed and it crept back on you, you had dialed "down" when it did that. "Up" I could see, but how it creeps against the turret which is solid, I can't wrap my head around. I'll look for the vertical string after the adjustments at each range I shoot next time. My load with the Berger had roughly twice the vertical spread as it was horizontal, but was consistant from group to group, but did not shift shortly after an adjustment. This load with the JLK appears at first to be more round, but I've got a few more groups to test before that's really confirmed, that and it's grouping ability. So far it looks good, but with the small sample I fired I can't be too sure yet. It looks to be running right near 3200 fps, and would be okay to use, although I hope I could run it to 3300 as it would integrate even better.

I remember one night my Dad and I were out clangin steel at 500 yards, don't even remember what rifle I had my new NF on back then (300 Ultra?) but it was a bitch to see the vernier scale on the turrets so I went to hold over as soon as we moved back from 200 where he'd zeroed in his Springfield scope on his 308 at. I remember 7.5 MOA as the dope and I held for that and was on ctr first shot before he set down at his bench to shoot.

Love that lit reticle at times, but the R2 was what made the shots happen. His BDC reticle didn't quite work out with that load at 500 and was shooting off the steel for what seemed like 10 shots before he landed one. I know what MOA I need, and the scale is right there in view, his scale is??? for the 308 match load and everything else deviates. Now that the Springfield scopes of his rest on a 300 WSM, and the 300 WM, neither of them two integrate. The other SA scope is mildot on the 338 WSM, so it's not as bad. The 6.5 WSM has the 8-32 NF R2 and works perfectly with 140's.

I do know what you mean about being dead zero. I scratched my head once just last year shooting the A-Max at 1k yards, only to find in the end that I was off 3/4 MOA on my zero. I knew my MV was dead nuts on, and the BC wasn't over .6 for the 178, so that left one thing...
__________________
Brent Moffitt
Reply With Quote
  #11  
Old 01-06-2004, 07:19 AM
Platinum Member
 
Join Date: May 2001
Location: Casper Wy
Posts: 1,318
Re: Please explain R2 reticle advantages.

Another advantage I learned from prairie dogin with STL is that you can gauge your spotter shots a lot better with the R2.
This came in very handy the next trip out.We where shooting past 2000 and the other guy had a 30WSM shooting 240MK @ 2450fps.He had a Harbor engineering mount and a 24x Leupold.As I remember he had to dial 170MOA to get that far and even if the prairie dog ran a few yards we had to adjust.By useing the R2 I could tell him how many MOA his last shot missed by and he could dial the correction.
CJ
__________________
"Make everything as simple as possible, but not simpler." -Albert Einstein (1879-1955)
Reply With Quote
  #12  
Old 01-08-2004, 10:39 AM
JD JD is offline
Bronze Member
 
Join Date: Feb 2003
Posts: 37
Re: Please explain R2 reticle advantages.

I have a question for you guys that seem to know alot about the R2 reticle, as Im seriously considering buying a NF scope. As I understand it, the R2 is designed to integrate with a high BC bullet moving around 32-3300fps? I have a 300WM and am waiting on a 6.5 x 284 to be built. How hard would it be to get either calibers to "work" with this reticle? What BC bullet at what velocity would make it work the best in either caliber. Thanks in advance
Reply With Quote
  #13  
Old 01-09-2004, 12:21 AM
Silver Member
 
Join Date: Nov 2002
Location: St. Louis
Posts: 189
Re: Please explain R2 reticle advantages.

JimD,

Here's an easy way for you to find out approximately how the R2 would work for you.

Use any ballistic program you have some degree of faith in. Plug in the numbers from your load. If you don't have one, here's a link to start with...
http://www.beartoothbullets.com/resc...ors/balistics/

Now, generate the ballistic solution using varying zero distances. For instance, here's mine using a 600 yard zero.

Range Vel Energy Drop

0 3305.2 5093.9 ---
100 3150.4 4627.8 7.9
200 3000.8 4198.7 7.2
300 2856.1 3803.5 5.8
400 2716.0 3439.6 4.1
500 2580.5 3104.8 2.1
600 2449.2 2797.1 -0.0
700 2322.3 2514.6 -2.3
800 2199.3 2255.4 -4.8
900 2079.5 2016.2 -7.5
1000 1963.4 1797.5 -10.5
1100 1851.6 1598.6 -13.6
1200 1744.3 1418.6 -17.1
1300 1641.7 1256.6 -20.9
1400 1544.0 1111.6 -25.0
1500 1452.2 983.4 -29.5

Note that the drop column is in MOA.

Now, notice that closer than 600 yards, the POI are basically on the 2 MOA tick marks (with 100 and 200 yards being so close as to be a non-issue)?

If you're familiar with the R2 reticle on the 5.5x22, you know that 20 MOA are printed on the reticle below the main crosshair, so how far can I shoot without making an elevation adjustment? In the conditions I specified in the ballistic solution, out to 1300 yards...

Now, in your case, simply vary the range at which you zero the rifle, and watch the MOA drop numbers until a suitable solution appears. My .223 requires at 200 yard zero, my 6mm Rem shooting the 105 AMax at 3250 fps fits a 300 yard zero well, and the Wolf works excellently with a 600 yard zero.

There's a number of combinations that come to mind, once you understand the simple principle.

You'll note for all except the fastest, highest BC cartridges, that mil-dot spacing may work better than 2 MOA. But for the fast, really flat stuff - give me as many ticks as you can separated by 2 MOA!

I don't use the mil-dot (3.44 blah blah blah, huh?!?) even for the slow stuff because I want the math for only one system imprinted in the old noggin... [img]images/icons/smile.gif[/img]

[ 01-08-2004: Message edited by: STL ]
__________________
STL. Principal Consultant and Managing Partner - Association of Bifurcated Tangential Ballistic Apologists, LLP.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Please explain R2 reticle advantages.
Thread Thread Starter Forum Replies Last Post
Any advantages of the 300/7mm wsm? OKbow87 Rifles, Bullets, Barrels & Ballistics 7 01-12-2013 12:06 AM
advantages 30.06AI VS STD. cheeta732 Rifles, Bullets, Barrels & Ballistics 6 11-20-2012 08:54 PM
Reloading advantages? Shooter98 Reloading 27 02-08-2011 06:36 PM
What are the advantages& disadvantages joelbiltz Reloading 4 03-14-2005 08:53 PM
Advantages of a 30-338RUM ? CanadianLefty Rifles, Bullets, Barrels & Ballistics 2 02-18-2005 10:22 PM


All times are GMT -5. The time now is 03:09 AM.


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