Re: Scope question
[Re: Mike in A-town]
#6995187
09/20/20 08:37 AM
09/20/20 08:37 AM
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Joined: May 2012
Posts: 5,895 michigan,USA
seniortrap
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In measuring degrees there is a reference. Using a circle at 360 degrees.
For every inch (1) a degree is .0175". That's of an inch. 12 inches of one degree measures .21".
One degree at 120 inches its 25.2" So at 100 yards a degree is moving 63 feet. 1/4 moa is 15.75.
Now everyone can figure that out further.
Last edited by seniortrap; 09/20/20 09:05 AM.
Vietnam--1967 46th. Const./Combat Engineers
"Chaotic action is preferable to orderly inaction." "After the first shot, all plans go out the window!"
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Re: Scope question
[Re: Mike in A-town]
#6995264
09/20/20 10:28 AM
09/20/20 10:28 AM
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Joined: Sep 2013
Posts: 18,374 Green County Wisconsin
GREENCOUNTYPETE
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Yes Pete, that's it. And I am using the MRAD reticle with the dot in the center... I believe it's reticle #1 in the link you shared.
Mike being digital I am not sure the conventional rules apply the same as a second focal plane unless otherwise stated generally highest magnification is where the recital is calibrated I think I would set up a calibration square of say 30 centimeters place that at 100 meters and then proceed to see how the calibration actually is in the scope
America only has one issue, we have a Responsibility crisis and everything else stems from it.
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Re: Scope question
[Re: Mike in A-town]
#6995289
09/20/20 11:05 AM
09/20/20 11:05 AM
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Joined: Jan 2011
Posts: 3,241 Indiana
keystone
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So you have to think about the target changing size as you increase and decrease the magnification, the reticle does not change size. When your sighting in for 700yds you have to use the exact holdover mark at the exact magnification that you will always use at that particular distance. The distance between your holdover marks stays the same since your reticle doesn’t change size but your target gets much larger at higher magnification.
I think I understand what you're saying. Here's what I'm trying to wrap my head around... When I zoom from 4x to 32x my target gets 8 times bigger. This was evidenced by my little 5 yard experiment. Now if I'm at 700 yards and using 4x power and hitting with 5.5 mils of holdover and I zoom to 32x my target is now 8x bigger than it was at 4x. So is it correct to think that I would divide my 5.5 mil holdover by 8 to account for that? The math would seem to make that right but that's assuming it's proportional. Or is it easier/more accurate to move back to 100 yards and rezero at 32x and go from there? Mike Like you said as long as your holdover’s are proportional that would make sense but i would definitely think it would be easier to move back and zero at 32 power, or whatever power you would feel you would use from say 300 out to 700. SFP is perfectly fine when adjusting with the turrets, when using the holdover it becomes a pain in the butt, especially because the holdovers don’t account for wind. Instead of having a 4-32 power scope it’s like you have a 4 power and a 32 power. Or a 4 power and whatever other power you choose. There’s to much complication in between.
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Re: Scope question
[Re: robert.d12]
#6995333
09/20/20 12:28 PM
09/20/20 12:28 PM
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Joined: Feb 2014
Posts: 13,057 Ky
jbyrd63
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Yes, your reticle change as you change the magnification. Usually a reticle is designed for max magnification, but on a 32x scope it might not be. What brand and model is it? You should be able to google what magnification the reticle is set for WHAT !!! About this time last year I had the same problem but not at that distance and I was told no way. Changing magnification doesn't effect zero....
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Re: Scope question
[Re: Mike in A-town]
#7015052
10/11/20 09:52 PM
10/11/20 09:52 PM
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Joined: Sep 2013
Posts: 10,404 Northeast Oklahoma
Mike in A-town
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Quick update...
It looks like the biggest problem was the ammo. I stated earlier that I was using Federal American Eagle 150 gr FMJ. They just don't shoot well in the gun. So I worked up some hand loads with Nosler 150 gr. Ballistic Silvertips. Best group was about 1.5" at 100 yards. Still not good enough.
So I researched and asked around. I was told to try heavier bullets so I picked up some Sierra Match King 168 HPBT. I loaded 10 to try out... 5 at the starting load and another 5 loaded at the mid range. Went out and shot them at 100 this afternoon...
Still have to fine tune the load some but the groups were much better. I had a few fliers which is probably me being jerky on the trigger. Without the fliers my groups were about 1/2"
If I can tune the load and keep my groups at 1/2" I'll start working back up to that 700 yard target... 700 is just about the max I can safely shoot at this spot.
I may look into upgrading my trigger too. The factory trigger breaks pretty clean but it feels like it takes about 14 pounds to make it break.
Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Scope question
[Re: Mike in A-town]
#7015111
10/11/20 11:17 PM
10/11/20 11:17 PM
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Joined: Sep 2013
Posts: 18,374 Green County Wisconsin
GREENCOUNTYPETE
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good to hear it is getting better
I found my 1:10 twist 308 didn't much care for 150 federal either , they were about 2 1/2 inches at 100 yards
this was from bolt action rifles
the 165 and 180 were better
America only has one issue, we have a Responsibility crisis and everything else stems from it.
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Re: Scope question
[Re: keystone]
#7015135
10/11/20 11:47 PM
10/11/20 11:47 PM
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Joined: Sep 2013
Posts: 4,822 Nevada
nvwrangler
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Yes, your reticle change as you change the magnification. Usually a reticle is designed for max magnification, but on a 32x scope it might not be. What brand and model is it? You should be able to google what magnification the reticle is set for On a SFP the reticle does not change, the target does. The reticle is placed behind the magnification lense so it never changes size. This First focal plane the reticle changes size Second focal plane it stays the same size but is normally only correct at the highest magnification for moa or mill
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Re: Scope question
[Re: GREENCOUNTYPETE]
#7015805
10/12/20 07:33 PM
10/12/20 07:33 PM
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Joined: Sep 2013
Posts: 10,404 Northeast Oklahoma
Mike in A-town
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good to hear it is getting better
I found my 1:10 twist 308 didn't much care for 150 federal either , they were about 2 1/2 inches at 100 yards
this was from bolt action rifles
the 165 and 180 were better
It was a substantial improvement. I have some Hornady 195 gr ELD Match bullets and a pound of CFE 223... I may load up 5 or 10 just to see how well they shoot just for kicks. Mike
One man with a gun may control 100 others who have none.
Vladimir Lenin
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Re: Scope question
[Re: Mike in A-town]
#7015811
10/12/20 07:41 PM
10/12/20 07:41 PM
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Joined: Sep 2013
Posts: 18,374 Green County Wisconsin
GREENCOUNTYPETE
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I like to load 180 BTSP but I got a good price on a Few 165 BTSP they work on deer also heck inside 200 I don't know if I or the deer can tell
if this bullet shortage lasts a long time I will be shooting 165 for closer targets and save some 180 for when I feel I need the extra weight
I load H4895 not the highest velocity but works in the M1 , 308 , 223 , 30-30 it does a decent job
America only has one issue, we have a Responsibility crisis and everything else stems from it.
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