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Joined: Dec 2021
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Campfire Greenhorn
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Campfire Greenhorn
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I [b][/b]have a question regarding duplex scopes. I have 3 rifles that all perform the same way. 1)An Abolt 30-06 shooting 180gr nosler partition PP over a max charge of IMR4064
2)M70 .375H&H shooting 260gr nosler partitions over a max charge of IMR4895
3)Savage 11 30-06 shooting 180gr TTSX over a max charge of Superperformance
All three sighted to hit point on at 200yds, (slightly varying amounts high at 100yds) but they all also print dead on at 300yds, if I use as an aiming point, the part is the lower vertical cross hair that is the arrow portion where it goes from thick to thin.
Am I just lucky, or was this purposeful from the scope manufacturers?
Scopes are two Leupold VX III and one Nikon Monarch
Last edited by savage220; 02/12/23.
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Joined: Dec 2021
Posts: 91
Campfire Greenhorn
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Campfire Greenhorn
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Sorry for the confusion. I meant they print dead on at 300yds using the arrow portion of the duplex!
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Joined: Apr 2004
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Campfire Tracker
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Campfire Tracker
Joined: Apr 2004
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Easy to check out. Set up a graph paper, marked in inches, at 100 yrds, exactly, turn the scope up to full power, see where the "point" falls, inches low, then refer to your known ballistic chart.
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Joined: Jun 2004
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
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I have several 308s set up that way with simple scopes. For my hunting it makes things quick and easy.
"In the real world, think of the 6.5 Creedmoor as the modernized/standardized/optimized version of the 6.5x55/.260." John Barsness 2019
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Joined: Dec 2021
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Campfire Greenhorn
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Campfire Greenhorn
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Again I think I was confusing. I know where it prints at 100 and 200. What I find interesting is that each rifle/scope combo prints dead on at 300 where the lower crosshair becomes thicker. It’s incredibly useful.
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Joined: Dec 2014
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Campfire Tracker
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Campfire Tracker
Joined: Dec 2014
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A lot of ballistic info missing but yeah, nothing amazing figuring a 7.6 moa subtension...it is amazing that it is in your words "dead on" at 300yds. I've never been that fortunate. I would guess that 7.6 moa subtension was no coincidence on behalf of the engineers.
Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.
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Joined: Oct 2009
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Campfire Regular
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Campfire Regular
Joined: Oct 2009
Posts: 894 |
Again I think I was confusing. I know where it prints at 100 and 200. What I find interesting is that each rifle/scope combo prints dead on at 300 where the lower crosshair becomes thicker. It’s incredibly useful. The issue that you are going to have is that it is that way when dialed up to max at the bench. Try it when it is set at 5X (or any X below max) and the results will be quite different.
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Joined: Sep 2010
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Campfire Tracker
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Campfire Tracker
Joined: Sep 2010
Posts: 3,609 |
You just have very similar ballistics from those three and they just happen to work with your scopes. The 375 is just an overgrown 30-06.
I am continually astounded at how quickly people make up their minds on little evidence or none at all. Jack O'Connor
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Joined: Nov 2006
Posts: 9,273
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 9,273 |
At one time, I knew at what level of magnification to set the 1-4 Leupold on my .45-70 Guide Gun so that, when sighted in at 100 yards, the lower "point" of the duplex would put me on at 200 yards.
Mathew 22: 37-39
Happy escapee from NY
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Joined: Dec 2021
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Campfire Greenhorn
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Campfire Greenhorn
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I guess I’m just lucky. I have a Savage M12 (varmint style , heavy fluted barrel) with a 4.5-14x50 Ill. That has a fine crosshair, a space, then mildots. The bottom of the crosshair as an aim point is exactly where my bullet lands at 300yds when it is sighted dead on at 200. That rig shoots 165gr Nosler ballistic tips over 43grains of IMR4895. It’s my only load that isn’t max, but it is way more accurate than I can shoot it. I borrowed a fellow’s chrono one day at the range and it was 2616fps. I’ve used it to take make 40 NC sized deer. Only 1 made it more that 30 yards.
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Joined: Aug 2010
Posts: 42,488
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 42,488 |
A lot of ballistic info missing but yeah, nothing amazing figuring a 7.6 moa subtension...it is amazing that it is in your words "dead on" at 300yds. I've never been that fortunate. I would guess that 7.6 moa subtension was no coincidence on behalf of the engineers. "Dead on" to one guy, may not necessarily be "dead on" to another guy. Just sayin. His dead on may be like many others where if he's on a 12" steel plate at 300 yards, that is good enough.
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Jan 2008
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Campfire Regular
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Campfire Regular
Joined: Jan 2008
Posts: 1,788 |
Again I think I was confusing. I know where it prints at 100 and 200. What I find interesting is that each rifle/scope combo prints dead on at 300 where the lower crosshair becomes thicker. It’s incredibly useful. The issue that you are going to have is that it is that way when dialed up to max at the bench. Try it when it is set at 5X (or any X below max) and the results will be quite different. True that. Find the power that puts the tip of the bottom tapered crosswire at poi at desired range and you've got a useful second aiming point. Write that power and range down.
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Joined: Dec 2021
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Campfire Greenhorn
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Campfire Greenhorn
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No, I mean dead on at 300. If the wind isn’t blowing, and I do my part (the harder thing to count on!), I can put em in a 3-5” group at the aiming spot at 300 using that point to aim. The Abolt has a heavy duplex so it is a hunting scope not a target model.
Deer hunting in NC is often a last minute of light deal and I find a heavy duplex or illuminated scope necessary.
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