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Posted: 9/21/2018 12:19:37 PM EDT
[#1]
I thought 6.5 was more of a flat shooter, maybe hand loads?
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Posted: 9/21/2018 12:26:00 PM EDT
[#2]
Sorry. 12" barrel. I'll edit the OP.
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Posted: 9/21/2018 1:49:21 PM EDT
[#3]
Thanks for the data, was it Federal M855? What make of barrel?
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Posted: 9/21/2018 5:48:35 PM EDT
[#4]
You're getting close to what Eagle got with his 12" 6.5g with the exception of the Wolf. He only averaged 2142 fps (nearly 200fps less than you) which I think surprised a lot of us.
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Posted: 9/21/2018 8:25:59 PM EDT
[#5]
Quote HistoryQuoted:
Sorry. 12" barrel. I'll edit the OP. |
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Posted: 9/25/2018 3:55:51 AM EDT
[#6]
Quote HistoryQuoted:
I thought 6.5 was more of a flat shooter, maybe hand loads? |
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Posted: 9/25/2018 2:28:21 PM EDT
[#7]
Quote HistoryQuoted:
Thanks for the data, was it Federal M855? What make of barrel? |
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Posted: 9/25/2018 4:46:26 PM EDT
[#8]
Thanks for your report, the Critical Defense stats are surprisingly disappointing.
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Posted: 10/4/2018 9:11:39 PM EDT
[#9]
Chrono some common factory ammo today. SBR with factory ammo.
11.5 factory complete Daniel Defense Upper with M4-2000: CBC Magtech 77 Mk262 = 2,400 fps : This round did alright, but has some weird groups with this upper for some reason. IMI M855 62gr green tip = 2,569 fps : This round is a solid 1 MOA with this barrel, which is nice. 12.5" upper with KAK midlength gas barrel with TREK-T : CBC Magtech 77 Mk262 = 2,492 fps : This round is a solid 0.8 MOA with this barrel, which is nice. IMI M855 62gr green tip = 2,680 fps 16" Ballistic Advantage barrel upper with TREK : CBC Magtech 77 Mk262 = 2,620 fps : This round is slightly sub 1 MOA with this barrel, which is nice. 9" BCM factory blackout upper with Omega : 110 Barnes TAC-TX black tip blk = 2,128 fps : this is about a 3 MOA round/barrel combo. 10.3" Ballistic Advantage 300 blackout barrel with SDN6 : 125gr Fiocchi blue tip SST 125 = 2,030 fps : This round is a solid 1.3 MOA with this barrel, which is nice. Ammo used: https://www.sgammo.com/product/223-556mm-ammo/temporary-sale-1000-rounds-556mm-62-grain-green-tip-fmj-m855-imi-ammo-made-is https://www.sgammo.com/product/223-556mm-ammo/1000-round-case-556x45-otm-77-grain-smk-hollow-point-magtech-first-defense-sn https://www.sgammo.com/product/fiocchi/25-round-box-300-aac-blackout-125-grain-300-spec-sst-fiocchi-ammo-300blkha https://www.midwayusa.com/product/430384/barnes-vor-tx-ammunition-300-aac-blackout-110-grain-tac-tx-polymer-tipped-spitzer-flat-base-lead-free-box-of-20 |
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Posted: 10/5/2018 8:53:07 AM EDT
[#10]
Awesome! Good work.
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Posted: 10/5/2018 2:50:32 PM EDT
[#11]
Quote HistoryQuoted:
Awesome! Good work. |
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Posted: 10/5/2018 3:43:45 PM EDT
[#12]
Yeah, I guess. Was it cold?
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Posted: 10/16/2018 8:23:41 PM EDT
[#13]
Quote HistoryQuoted:
Yeah, I guess. Was it cold? |
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Posted: 10/17/2018 10:36:49 AM EDT
[#14]
Well, it was probably well over 100°F when I tested. That might explain the difference in velocity. I'm not sure.
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Posted: 10/17/2018 11:08:20 AM EDT
[#15]
The rule of thumb is to expect a roughly 1 FPS velocity change per degree F of temperature. IE, if you test an ammo at 50 degrees F, it would be roughly 50 FPS faster if you shot it at 100 degrees F.
Something to consider. |
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Posted: 10/18/2018 4:30:28 PM EDT
[#16]
Altitude affects velocity some too.
Down here at sea level, we typically have faster race times at the track, but you guys at higher altitude get the benefit of faster moving bullets. |
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Posted: 10/19/2018 3:14:57 PM EDT
[#17]
Quote HistoryQuoted:
Well, it was probably well over 100°F when I tested. That might explain the difference in velocity. I'm not sure. Will you PLEASE PLEASE PLEASE do a gel test with the 77 Magtech Mk262 clone round with a 10." barrel. It seems very popular and its extremely accurate. I think its a different bullet than Black Hills and IMI. https://www.sgammo.com/product/223-556mm-ammo/50-round-box-556-x-45-77-grain-smk-hollow-point-magtech-ammo-556c Ill send you the money haha. |
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Posted: 10/19/2018 3:25:16 PM EDT
[#18]
Quote HistoryQuoted: Interesting, maybe my chrono was at an angle or off, I'll have to try again. Will you PLEASE PLEASE PLEASE do a gel test with the 77 Magtech Mk262 clone round with a 10." barrel. It seems very popular and its extremely accurate. I think its a different bullet than Black Hills and IMI. https://www.sgammo.com/product/223-556mm-ammo/50-round-box-556-x-45-77-grain-smk-hollow-point-magtech-ammo-556c Ill send you the money haha. 
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Posted: 10/19/2018 4:10:54 PM EDT
[#19]
Quote HistoryQuoted: Interesting, maybe my chrono was at an angle or off, I'll have to try again. Will you PLEASE PLEASE PLEASE do a gel test with the 77 Magtech Mk262 clone round with a 10." barrel. It seems very popular and its extremely accurate. I think its a different bullet than Black Hills and IMI. https://www.sgammo.com/product/223-556mm-ammo/50-round-box-556-x-45-77-grain-smk-hollow-point-magtech-ammo-556c Ill send you the money haha. I think all he asks is for you to send him a few of the rounds that you want to see tested. |
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Posted: 10/19/2018 5:15:16 PM EDT
[#20]
Quote HistoryQuoted: Interesting, maybe my chrono was at an angle or off, I'll have to try again. Will you PLEASE PLEASE PLEASE do a gel test with the 77 Magtech Mk262 clone round with a 10." barrel. It seems very popular and its extremely accurate. I think its a different bullet than Black Hills and IMI. https://www.sgammo.com/product/223-556mm-ammo/50-round-box-556-x-45-77-grain-smk-hollow-point-magtech-ammo-556c Ill send you the money haha. https://youtu.be/pzicw0Q8HRg |
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Posted: 10/20/2018 10:23:26 AM EDT
[#21]
Also,
I was under the impression that the Magtech CBC 77 uses a 77 SMK without Cannelure, the Black Hills has a Cannelure which helps in fragmentation, and the IMI uses their own special 77gr bullet that fragments but also expands. Has anyone pulled these? I would be happy to send money for him to order the ammo and try the exact 77 CBC that I would use. |
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Posted: 10/20/2018 3:01:40 PM EDT
[#22]
Quote History |
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Posted: 10/20/2018 3:02:22 PM EDT
[#23]
Quote HistoryQuoted: They are all just basically an MK262 clone using the same bullet. Here's a a test @bluefalcon did of the IMI 77 grain Razor Core from a 10.5" barrel. https://youtu.be/pzicw0Q8HRg |
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Posted: 10/20/2018 9:20:55 PM EDT
[#24]
Quote HistoryQuoted:
Altitude affects velocity some too. Down here at sea level, we typically have faster race times at the track, but you guys at higher altitude get the benefit of faster moving bullets. Little to no impact on muzzle velocity though. It can have a dramatic effect at 1000yds. Where I live has modest elevation, 2800'. A dope card compared to sea level is VERY different. |
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Posted: 10/20/2018 9:48:53 PM EDT
[#25]
Quote HistoryQuoted: I was under the impression that the Magtech CBC 77 uses a 77 SMK without Cannelure, the Black Hills has a Cannelure which helps in fragmentation, and the IMI uses their own special 77gr bullet that fragments but also expands. https://magtechammunition.com/products/5-56x45mm-hpbt-77gr-cannelured/ |
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Posted: 10/21/2018 1:04:01 AM EDT
[#26]
Quote HistoryQuoted:
Sorry. 12" barrel. I'll edit the OP. |
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Posted: 10/21/2018 1:17:45 PM EDT
[#27]
Quote HistoryQuoted: Awesome, thanks for the Grendel info, any plans to try the 90g tnt in gel? |
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Posted: 10/21/2018 1:30:14 PM EDT
[#28]
Quote HistoryQuoted: He can't answer because he is banned. What happened? |
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Posted: 10/21/2018 2:00:48 PM EDT
[#29]
Quote HistoryQuoted: He can't answer because he is banned. |
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Posted: 10/21/2018 4:34:27 PM EDT
[#30]
Quote HistoryQuoted:
He can't answer because he is banned. Quote HistoryQuoted:
Quoted: Awesome, thanks for the Grendel info, any plans to try the 90g tnt in gel? Also, I Chronod the 90gr TNT from my Howa 16" barrel bolt gun and it averaged 2,812 fps. But I think they discontinued it? I can't it any more. Which sucks because its a nice round. |
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Posted: 10/21/2018 9:49:50 PM EDT
[#31]
Bluefalcon of youtube's "The Chopping Block" who does all of AR15.com's gel tests is banned??? How / why?
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Posted: 10/21/2018 10:14:14 PM EDT
[#32]
Quoted:
.223 Rem Hornady Critical Defense 73 grain FTX 10.5" AR 2,252 2,229 2,232 2,042 2,134 Average: 2,159.3 StdDev: 90.4 Min: 2,042 Max: 2,232 Spread: 190 |
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Posted: 10/21/2018 10:19:51 PM EDT
[#33]
Just realized he's banned.
Maybe because of his Why do mods allow racist BS thread in GD on Friday? |
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Posted: 10/22/2018 10:04:29 AM EDT
[#34]
Quote HistoryQuoted:
Just realized he's banned. Maybe because of his Why do mods allow racist BS thread in GD on Friday? At least velocity postings help people 
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Posted: 10/22/2018 10:41:55 AM EDT
[#35]
Quote HistoryQuoted: Interesting, maybe my chrono was at an angle or off, I'll have to try again. Will you PLEASE PLEASE PLEASE do a gel test with the 77 Magtech Mk262 clone round with a 10." barrel. It seems very popular and its extremely accurate. I think its a different bullet than Black Hills and IMI. https://www.sgammo.com/product/223-556mm-ammo/50-round-box-556-x-45-77-grain-smk-hollow-point-magtech-ammo-556c Ill send you the money haha. https://m.youtube.com/watch?v=pzicw0Q8HRg |
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