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“Quarter” Minute of Angle (Page 2 of 4)
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Originally Posted By Kuraki:
Drew these in AutoCad then colored them in MS Paint. The inside diameter of the black outline is .955" when printed to scale. Here are TIFF images: http://i65.tinypic.com/282jkuh.jpg http://i67.tinypic.com/21r7kz.jpg Here are PDFs: Orange Green For some reason those won't print correctly for me. When I open the files in Adobe Reader, it says that your document is 22.9" x 17.7". ... |
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Here's the two rows of quarters target . . .
.pdf download . . . two rows of 5 quarters target |
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That's weird. I don't have full Adobe at home. I will try to fix them tomorrow. I just tried the tiff images and they are correct.
ETA: You were right. I fixed them and put them back into the links above. Somehow I exported them wrong. But they both now print 8.5 x 11 at full size no scaling. |
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Link in the spirit of Quarter shooting....
NOT looking to start a discussion about it....it is just a interesting article.... http://bulletin.accurateshooter.com/2016/01/punching-a-quarter-at-800-yards/ |
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
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JAFOM
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Originally Posted By Kuraki:
ETA: You were right. I fixed them and put them back into the links above. Somehow I exported them wrong. But they both now print 8.5 x 11 at full size no scaling. Much better! |
All that is necessary for Trolls to flourish, is for good men to do nothing.
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I put two .308 rounds through a dime (100yds) a few years ago, I thought I missed with the first shot so I fired a second. The first shot stretched the dime out of shape enough that I got the second one through without breaking the hole from the first. Once in a lifetime and unfortunately not something I could likely repeat if I had 100k rounds to try.
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Originally Posted By phylodog:
I put two .308 rounds through a dime (100yds) a few years ago, I thought I missed with the first shot so I fired a second. The first shot stretched the dime out of shape enough that I got the second one through without breaking the hole from the first. Once in a lifetime and unfortunately not something I could likely repeat if I had 100k rounds to try. http://i670.photobucket.com/albums/vv63/phylodog/IMG00030-20090317-1050.jpg http://i670.photobucket.com/albums/vv63/phylodog/IMG00028-20090317-1049.jpg That's awesome |
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Life Member: AR15.com, NRA, NYSRPA, SAF
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Originally Posted By fish223:
That's awesome Originally Posted By fish223:
Originally Posted By phylodog:
I put two .308 rounds through a dime (100yds) a few years ago, I thought I missed with the first shot so I fired a second. The first shot stretched the dime out of shape enough that I got the second one through without breaking the hole from the first. Once in a lifetime and unfortunately not something I could likely repeat if I had 100k rounds to try. http://i670.photobucket.com/albums/vv63/phylodog/IMG00030-20090317-1050.jpg http://i670.photobucket.com/albums/vv63/phylodog/IMG00028-20090317-1049.jpg That's awesome Wow. I'd have that mounted in some fancy display if I ever pulled off something like that. |
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This post is solely the opinion of ARBarsh and does not reflect the views of ar15.com
This post is solely the opinion of ARBarsh and does not reflect the views of ar15.com
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Went to the range Sunday to shoot the printed quarters. Rifle was a Bushmaster XM-15E2S with 20" barrel (1:9 twist), ammo was 55 gr. PMC Bronze (pretty sure flat-based, not boat-tailed, can get exact SKU later) .223 Remington.
Used a 100-yard shooting tunnel to minimize wind influence (it was SUPER windy that day). Yeah...didn't go too well. One thing: my scope only goes up to 4.5x. This is woefully inadequate to see anything more than a slightly bumpy line at 100 yards. thing two: Scope wasn't zeroed at 100 yards. Got it there by the end of the session though. Takeaway: I need a better scope. Not only magnification-wise, but with a bigger objective (20mm was not enough) and better optics quality (the chromatic aberration was almost physically painful). Looking at the Nikon M223 series. |
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Originally Posted By Molon:
“Quarter” Minute of Angle Here’s a simple exercise that you can conduct to assess the consistency of the overall performance of your AR-15, ammunition, scope and zero. You will need to down-load one of the 100-yard targets (in .pdf format) that are pictured below, from the links at the end of this article (whichever target you prefer.) https://app.box.com/shared/static/xwn2opb1s8t3rp9hxo4sem7qb2dsu2y9.jpg https://app.box.com/shared/static/i1lxn802604d30pyuj02xp4h614ac4qy.jpg As you can see in the pic above, the targets consist of the images of ten U.S. quarters in a row (or two rows of five quarters), on an 8.5” x 11” piece of paper. The nominal diameter of a U.S. quarter is 0.955”; in other words, it is a sub-minute of angle target at a distance of 100 yards. Post the target at a distance of 100 yards from your shooting point. Shooting from any position that you choose, with or without any support that you want, fire one shot and one shot only, at each of the ten “quarters” on the target. In order to score a “hit” on an individual quarter, the center of your bullet-impact must break the outline of the quarter. The quarters should be shot at in consecutive order (left to right or right to left) in order to more easily keep track of any “collateral damage” (hitting one quarter when you were actually aiming at another.) Take as much time as you like in-between each shot, but at the end of the exercise you can only have ten bullet holes on the target. As an example, the target pictured below was shot from the bench using one of my Krieger barreled AR-15s with match-grade hand-loads. https://app.box.com/shared/static/3zi4kw2n5qokx2fbiqvtm530u9katm0a.jpg Is the performance of your AR-15, ammunition, scope and zero consistent enough to make a single shot on a sub-minute of angle target 100% of the time; ten out of ten attempts? 90% of the time; 9 out of 10 attempts? 50% of the time; 5 out of 10 attempts? Down-load the target and find out! Links to targets, in .pdf format: one row of 10 quarters target two rows of 5 quarters target …. I like! Im totally ripping this off to add to my classes. 
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Originally Posted By Objekt:
. . . ammo was 55 gr. PMC Bronze (pretty sure flat-based, not boat-tailed, can get exact SKU later) .223 Remington. The PMC Bronze 55 grain ammunition uses a FMJ bullet with a boat-tail. ... |
All that is necessary for Trolls to flourish, is for good men to do nothing.
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Originally Posted By TaylorWSO:
pffft I use real quaters <a href="http://s42.photobucket.com/user/taylorwso/media/PICT2383.jpg.html" target="_blank">http://i42.photobucket.com/albums/e303/taylorwso/PICT2383.jpg</a> i love your threads thanks for coming back the secrete service will be out to visit you soon, that's a felony! not that i care. |
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Originally Posted By mr_h:
the secrete service will be out to visit you soon, that's a felony! not that i care. Originally Posted By mr_h:
Originally Posted By TaylorWSO:
pffft I use real quaters <a href="http://s42.photobucket.com/user/taylorwso/media/PICT2383.jpg.html" target="_blank">http://i42.photobucket.com/albums/e303/taylorwso/PICT2383.jpg</a> i love your threads thanks for coming back the secrete service will be out to visit you soon, that's a felony! not that i care. Only if you are defacing it to alter its value I do believe. |
Harden The Fuck Up!
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"Section 331 of Title 18 of the United States code provides criminal penalties for anyone who 'fraudulently alters, defaces, mutilates impairs, diminishes, falsifies, scales, or lightens any of the coins coined at the Mints of the United States.'
This statute means that you may be violating the law if you change the appearance of the coin and fraudulently represent it to be other than the altered coin that it is. As a matter of policy, the U.S. Mint does not promote coloring, plating or altering U.S. coinage: however, there are no sanctions against such activity absent fraudulent intent." (Source U.S. Mint) |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
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Originally Posted By DM1975:
I like! Im totally ripping this off to add to my classes.
Originally Posted By DM1975:
Originally Posted By Molon:
“Quarter” Minute of Angle Here’s a simple exercise that you can conduct to assess the consistency of the overall performance of your AR-15, ammunition, scope and zero. You will need to down-load one of the 100-yard targets (in .pdf format) that are pictured below, from the links at the end of this article (whichever target you prefer.) https://app.box.com/shared/static/xwn2opb1s8t3rp9hxo4sem7qb2dsu2y9.jpg https://app.box.com/shared/static/i1lxn802604d30pyuj02xp4h614ac4qy.jpg As you can see in the pic above, the targets consist of the images of ten U.S. quarters in a row (or two rows of five quarters), on an 8.5” x 11” piece of paper. The nominal diameter of a U.S. quarter is 0.955”; in other words, it is a sub-minute of angle target at a distance of 100 yards. Post the target at a distance of 100 yards from your shooting point. Shooting from any position that you choose, with or without any support that you want, fire one shot and one shot only, at each of the ten “quarters” on the target. In order to score a “hit” on an individual quarter, the center of your bullet-impact must break the outline of the quarter. The quarters should be shot at in consecutive order (left to right or right to left) in order to more easily keep track of any “collateral damage” (hitting one quarter when you were actually aiming at another.) Take as much time as you like in-between each shot, but at the end of the exercise you can only have ten bullet holes on the target. As an example, the target pictured below was shot from the bench using one of my Krieger barreled AR-15s with match-grade hand-loads. https://app.box.com/shared/static/3zi4kw2n5qokx2fbiqvtm530u9katm0a.jpg Is the performance of your AR-15, ammunition, scope and zero consistent enough to make a single shot on a sub-minute of angle target 100% of the time; ten out of ten attempts? 90% of the time; 9 out of 10 attempts? 50% of the time; 5 out of 10 attempts? Down-load the target and find out! Links to targets, in .pdf format: one row of 10 quarters target two rows of 5 quarters target …. I like! Im totally ripping this off to add to my classes.
Be sure to post some of the results! ... |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
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7 out of 10 hits. Nice work!
Originally Posted By castiel:
Finally got to do this! I am VERY happy with the results. I expected far far worse from myself. I blame the wonderful weather this morning. https://i.sli.mg/sUX5V3.jpg https://i.sli.mg/nHTdsm.jpg https://i.sli.mg/sSnWfe.jpg https://i.sli.mg/CCoCeY.jpg https://i.sli.mg/niStZR.jpg |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
In God We Trust. Everyone else must post data.
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Originally Posted By Molon:
7 out of 10 hits. Nice work! Originally Posted By Molon:
7 out of 10 hits. Nice work! Originally Posted By castiel:
Finally got to do this! I am VERY happy with the results. I expected far far worse from myself. I blame the wonderful weather this morning. https://i.sli.mg/sUX5V3.jpg https://i.sli.mg/nHTdsm.jpg https://i.sli.mg/sSnWfe.jpg https://i.sli.mg/CCoCeY.jpg https://i.sli.mg/niStZR.jpg Thanks Molon. I think it was mostly luck this time. |
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Originally Posted By castiel:
Thanks Molon. I think it was mostly luck this time. Originally Posted By castiel:
Originally Posted By Molon:
7 out of 10 hits. Nice work! Originally Posted By castiel:
Finally got to do this! I am VERY happy with the results. I expected far far worse from myself. I blame the wonderful weather this morning. https://i.sli.mg/sUX5V3.jpg https://i.sli.mg/nHTdsm.jpg https://i.sli.mg/sSnWfe.jpg https://i.sli.mg/CCoCeY.jpg https://i.sli.mg/niStZR.jpg Thanks Molon. I think it was mostly luck this time. Unless the hit on the 4th quarter, is actually collateral damage from your shot at the 5th quarter, I don't think your results were due to luck. One way to be sure; repeat the exercise, but use the target with two rows of quarters. ... |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
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Originally Posted By Molon:
Unless the hit on the 4th quarter, is actually collateral damage from your shot at the 5th quarter, I don't think your results were due to luck. One way to be sure; repeat the exercise, but use the target with two rows of quarters. ... Originally Posted By Molon:
Originally Posted By castiel:
Originally Posted By Molon:
7 out of 10 hits. Nice work! Originally Posted By castiel:
Finally got to do this! I am VERY happy with the results. I expected far far worse from myself. I blame the wonderful weather this morning. https://i.sli.mg/sUX5V3.jpg https://i.sli.mg/nHTdsm.jpg https://i.sli.mg/sSnWfe.jpg https://i.sli.mg/CCoCeY.jpg https://i.sli.mg/niStZR.jpg Thanks Molon. I think it was mostly luck this time. Unless the hit on the 4th quarter, is actually collateral damage from your shot at the 5th quarter, I don't think your results were due to luck. One way to be sure; repeat the exercise, but use the target with two rows of quarters. ... I'm fairly confident I remember aiming at the 4th quarter for my 5th shot. It was a strange feeling shooting at a different target for each shot. I skipped the 5th one and continued on. Also on the first shot I wasn't sure where exactly I needed to aim. My first 3 shots were at 50 yards and I was around 1/4" low if I remember, so I jumped straight to the 100 yard quarters and over estimated and held too high. After the quarters I shot a 5 round group at 100 which unfortunately I didn't get a picture of. I should have shot that first so I knew where my zero was. Lessons learned 
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..... And this is how I learn what gear works and what doesn't, including me. Thanks Molon |
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General education should not be mere job training, but training of the mind to reason. http://www.welltrainedmind.com/classical-education/
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Originally Posted By castiel:
Finally got to do this! I am VERY happy with the results. I expected far far worse from myself. I blame the wonderful weather this morning. https://i.sli.mg/sUX5V3.jpg https://i.sli.mg/nHTdsm.jpg https://i.sli.mg/sSnWfe.jpg https://i.sli.mg/CCoCeY.jpg https://i.sli.mg/niStZR.jpg FWIW and YMMV.... try sorting your Fed. 50gr Tipped Varmint by weight.... I just got done separating 800rds into 5 weight groups. It "seems" to help eliminate those fliers. The lightest loaded round was 170.9 grains total weight v. the heaviest being 174.4grs total weight. I just did it last week.... but it was so rainy and windy..... that I realized I was wasting ammo trying to shoot the challenge. It was great practice and educational.... but, to many variables at play. for that matter one quarter I fired at 4 times and the shots all were off the quarter, towards 5 o'clock every shot. 
And Molon is correct... The target with two rows of quarters is "easier" to focus on. |
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM
JAFOM
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I tried again this weekend....
20" BCM SS FF.... I can say.... I now know how this barrel acts when it starts to heat up.... it moves towards the 10:00 position... then down towards the 4:00 position.... Lol .... not by much, 3/4 moa, but enough that it is noticeable. Also I need to find a way to cover the Keymod rail with something slick..... I swear it would catch / snag on something, on one of the quarters and consistently pull that one shoot.... including any "Well I flubbed that... may as well try again" shot. This is a great way to learn to shoot better. |
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM
JAFOM
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Originally Posted By HighpowerRifleBrony: Having trouble with your computer too, it seems.  Originally Posted By HighpowerRifleBrony: Originally Posted By jaqufrost: I've got targets printed, but I'm having a little trouble with my mount   Having trouble with your computer too, it seems. |
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Originally Posted By TaylorWSO:
pffft I use real quaters <a href="http://s42.photobucket.com/user/taylorwso/media/PICT2383.jpg.html" target="_blank">http://i42.photobucket.com/albums/e303/taylorwso/PICT2383.jpg</a> i love your threads thanks for coming back Isn't the cost of ammunition bad enough? |
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Originally Posted By jaqufrost:
I've got targets printed, but I'm having a little trouble with my mount https://youtu.be/V3TnMeqNjXo
Yikes. 
... |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
In God We Trust. Everyone else must post data.
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Originally Posted By Molon: Yikes. ... Originally Posted By Molon: Originally Posted By jaqufrost: I've got targets printed, but I'm having a little trouble with my mount https://youtu.be/V3TnMeqNjXoYikes. ...  |
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I cant wait to get my build done and try this.
How much time are you allowing between shots? have you found it is more forgiving with a 223 then a 308? or does the larger heavier bullet stay more consistent? and after seeing those 2 vids. Note to Self: dont buy a Borbro! |
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Originally Posted By donho00:
How much time are you allowing between shots? Originally Posted By donho00:
How much time are you allowing between shots? As much time as you want. Originally Posted By donho00:
have you found it is more forgiving with a 223 then a 308? Just remember that the center of your bullet hole must break the outline of the quarter in order to count as a hit. ... |
All that is necessary for Trolls to flourish, is for good men to do nothing.
In God We Trust. Everyone else must post data.
In God We Trust. Everyone else must post data.
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Originally Posted By jaqufrost: The replacement Bobro mount arrived last night. I'll be selling it soon as it will move on any rail that doesn't have a full cross lug. https://youtu.be/O1JCadv8IuAOriginally Posted By jaqufrost: Originally Posted By Molon: Originally Posted By jaqufrost: I've got targets printed, but I'm having a little trouble with my mount https://youtu.be/V3TnMeqNjXoYikes. ... https://youtu.be/O1JCadv8IuARelated to that, it taught me that when mounting anything, I always place the lug as far forward in the picatinny slot as possible before tightening. That way, under recoil, there is no where for the mount to go even if it wasn't torqued properly(lights, optics, etc.). |
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Originally Posted By jaqufrost:
I'll have to give this a try next range trip. ETA: I've had lots of good five round groups, it's definitely time to move on to 10rd groups. This is a 107 yard target. http://www.ar15.com/media/viewFile.html?i=82344 Nice shooting there. |
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“Quarter” Minute of Angle (Page 2 of 4)
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