[ARCHIVED THREAD] - Apparently ammo can affect accuracy (Page 1 of 2)
Posted: 11/1/2016 1:40:58 PM EDT
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I didn't think it could be this bad though.
I'm not a great rifle shooter by any means. But I started today by shooting the ZQI crap, and I thought, I can't possibly be this bad! 
Here is 10 shots at 100 yards. After the 1st 5, I adjusted my turrets a little bit. 
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If using scope, check to make sure your scope rings are tight (but not TOO tight, yes that is possible) around the scope body, your scope rings are locked tightly onto the scope base, and your scope base is locked tightly onto the upper receiver.
Check your muzzle device to make sure it is locked down tight and does not move at all. Remove your muzzle device to inspect the crown for chips or dings. Finally, check to see if there is a gap between the muzzle and the interior "back wall" of the muzzle device, effectively creating a baffle. A Yankee Hill flash suppressor on my A2 HBAR caused that to happen to me. Replacing it with a Smith Enterprise Vortex flash suppressor whose insides were snug against the muzzle cut my groups from 3 MOA to .5 MOA. |
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Not knowing the history of OP and his gun, my guess is that there's something wrong other than ammo. Brand new gun, not broken in yet. I installed the scope and tightened everything just before shooting. As you can see, my last 5 shots with the federal power shok are within 2 inches at 100 yards. |
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Brand new gun, not broken in yet. Quoted:
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Not knowing the history of OP and his gun, my guess is that there's something wrong other than ammo. Brand new gun, not broken in yet. Seriously.... maybe pull a bullet from a few rounds, compare bullet diameters/weights and charge weights? |
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PMC bronze is the worst stuff I have ever shot. Quoted:
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I have a 1/4 case of PMC Bronze 145 gr. that shoots like too. Shot it through 4 different guns now with the same results. PMC bronze is the worst stuff I have ever shot. Interesting I love PMC bronze for .223 ammo I swear around 08 or so that shit was super accurate. |
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Interesting I love PMC bronze for .223 ammo I swear around 08 or so that shit was super accurate. Quoted:
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I have a 1/4 case of PMC Bronze 145 gr. that shoots like too. Shot it through 4 different guns now with the same results. PMC bronze is the worst stuff I have ever shot. Interesting I love PMC bronze for .223 ammo I swear around 08 or so that shit was super accurate. PMC bronze has treated me fairly well in everything but the .308 I've tried (in 145 gr.). I really like PMC XTAC 5.56 in either 55 or 62 gr LAP. Wolf Gold .223 too. |
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Seems like this topic was just brought up.
yeah, that ZQ ammo is crap. actually, saying its crap is giving it to much credit. SPECIALLY for any precision work. and by precision, i mean you are trying to hit the broad side of a barn. Yeah, but the brass is good. And the bullets, if you download it. The issue is a shittily inconsistent powder charge. I HAVE gotten a lot that shot very well, then another lot that was shotgun-pattern accurate. |
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The accuracy of factory ammo, whatever the brand, is an 'accuracy crap-shoot'. OP, that same factory load that shoots so badly in one rifle may shoot much better in a different rifle. The charge weight may be a better match to the harmonic sweet-spot of one rifle as opposed to the other. In reality, the only way to maximize accuracy of a given rifle is to match the charge weight to that individual barrel's harmonics profile. Pushing a projectile with good 'flight dynamics' is also a contributing factor. If you want to tighten your groups, you're going to need to reload and run ladder tests on each weapon you own. What works well in one rifle may be barely acceptable in another identical rifle because they each have their individual harmonic profile. |
| Impossible. I was assured in this thread that ZQI is 1 MOA capable. My experience is that it gives 4-5" groups at 100 yards... |
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Impossible. I was assured in this thread that ZQI is 1 MOA capable. My experience is that it gives 4-5" groups at 100 yards... Exactly this. |
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The accuracy of factory ammo, whatever the brand, is an 'accuracy crap-shoot'. Given the fact that each and every rifle has it's own unique barrel harmonics, finding factory ammunition that shoots well through it is a 'hit or miss' proposition. Many times high-end ammo shoots no better than cheap ammo. It depends entirely on how well it meshes with the individual weapon's barrel harmonics. OP, that same factory load that shoots so badly in one rifle may shoot much better in a different rifle. The charge weight may be a better match to the harmonic sweet-spot of one rifle as opposed to the other. In reality, the only way to maximize accuracy of a given rifle is to match the charge weight to that individual barrel's harmonics profile. Pushing a projectile with good 'flight dynamics' is also a contributing factor. If you want to tighten your groups, you're going to need to reload and run ladder tests on each weapon you own. What works well in one rifle may be barely acceptable in another identical rifle because they each have their individual harmonic profile. Come on man, you can't just post a real, accurate, technical answer in here. This is GD. Lol
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Then I switched to some commercial stuff and suddenly the group shrank to 2".
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Going from 50 moa to 2 moa isn't surprising?  Quoted:
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I am not surprised. Going from 50 moa to 2 moa isn't surprising? Military Ammo Accuracy |
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I am not surprised. Going from 50 moa to 2 moa isn't surprising? Military Ammo Accuracy I will mail you the rest of the ZQI crap I have and you can do a Box O' Truth! Or I can meet you in Texas if you aren't in west or south east cartel land. Compare it to some commercial hunting ammo like the federal power shok I used. |
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I will mail you the rest of the ZQI crap I have and you can do a Box O' Truth! Or I can meet you in Texas if you aren't in west or south east cartel land. Compare it to some commercial hunting ammo like the federal power shok I used. Quoted:
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I am not surprised. Going from 50 moa to 2 moa isn't surprising? Military Ammo Accuracy I will mail you the rest of the ZQI crap I have and you can do a Box O' Truth! Or I can meet you in Texas if you aren't in west or south east cartel land. Compare it to some commercial hunting ammo like the federal power shok I used. I am near Beaumont. IM me if you want to send me some. I will compare it to my handloads and see if it is "accurate". |
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I use PMC Bronze .223 in my 10.5" Noveske barreled SBR cheapest brass ammo I can find (won't run steel through it) and it shoots sub MOA 10 shot groups... http://replygif.net/i/1459.gif Not joking at all, shit shoots as good as any other factory ammo that I've bought, bought a case from bulk ammo back at the beginning of the year and it shoots as good or better than any other range ammo I've tried... maybe I got a lucky batch but I'm not joking... |