User Panel
User Panel
User Panel
USA
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Posted: 5/3/2016 7:16:21 PM EDT
I have been entertaining the idea of an AR15 upper in one of the 6mm wildcats, and I have seen that they are most commonly set up with 24"-26" barrel for high power.
With the new mid-range "tactical" AR prone matches, which, with a max range of 600 yds would work at the club I belong to, I am thinking that a 6mm AR upper with a barrel under the 20" limit would be perfect for this type of match. Any reason why not? |
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MN, USA
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Posted: 5/4/2016 2:16:07 AM EDT
[#1]
Originally Posted By kc3:
I have been entertaining the idea of an AR15 upper in one of the 6mm wildcats, and I have seen that they are most commonly set up with 24"-26" barrel for high power. With the new mid-range "tactical" AR prone matches, which, with a max range of 600 yds would work at the club I belong to, I am thinking that a 6mm AR upper with a barrel under the 20" limit would be perfect for this type of match. Any reason why not? I'm thinking about doing one too. Perhaps the 6mm AR Turbo 40 Improved or 6mm Hagar: http://www.6mmar.com/6mmAR_Turbo_40_Improved.php I have a .224 Temeyok/6.8 Kunz right now. It's a 6.8 SPC case necked down to .224 with the shoulder bumped forward. |
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Posted: 5/4/2016 12:04:50 PM EDT
[#2]
Glad to see a thread on this.
I had a similar thought - why WOULDN'T you go with a 6mmAR-type versus a 6.5 Grendel? |
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Posted: 5/4/2016 2:00:47 PM EDT
[#3]
Yes, for wildcats, the 6mm's will be the ones to beat due to BC and speed.
Hagar limits your use of VLDs to single load. |
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Posted: 5/5/2016 11:57:25 AM EDT
[#4]
Quote HistoryOriginally Posted By LRRPF52:
Yes, for wildcats, the 6mm's will be the ones to beat due to BC and speed. Hagar limits your use of VLDs to single load. What's the advantage of the Grendel over the 6mmAR? Your posts are going to eventually cost me money. 
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Posted: 5/5/2016 12:08:04 PM EDT
[#5]
Quote HistoryOriginally Posted By USPcompact:
What's the advantage of the Grendel over the 6mmAR? Your posts are going to eventually cost me money.
Quote HistoryOriginally Posted By USPcompact:
Originally Posted By LRRPF52:
Yes, for wildcats, the 6mm's will be the ones to beat due to BC and speed. Hagar limits your use of VLDs to single load. What's the advantage of the Grendel over the 6mmAR? Your posts are going to eventually cost me money.
Factory ammo support and hunting. I know 6mm will kill, and is very popular for coyote hunting, but I personally prefer to use 6.5mm at a minimum for mule deer and elk. The 6mm wildcats are really good for target, since they are so flat, fast, with BCs in the .5's for G1. |
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MI, USA
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Posted: 5/6/2016 12:02:29 PM EDT
[#6]
A 20 inch would have less muzzle blast and rifle length gas.
You can have it fluted if weight is a concern. I went with a 22 inch krieger and its 1/2 MOA with 105 A max and 107 SMK. Like the 6mmAR the most since it shoots the 105 weight bullets. With an SLR adjustable gas block its very smooth shooting. The 6mm fat rat is real good also if you like fire forming for more speed. |
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Posted: 5/6/2016 12:05:20 PM EDT
[#7]
Quote HistoryOriginally Posted By LRRPF52:
Factory ammo support and hunting. I know 6mm will kill, and is very popular for coyote hunting, but I personally prefer to use 6.5mm at a minimum for mule deer and elk. The 6mm wildcats are really good for target, since they are so flat, fast, with BCs in the .5's for G1. Quote HistoryOriginally Posted By LRRPF52:
Originally Posted By USPcompact:
Originally Posted By LRRPF52:
Yes, for wildcats, the 6mm's will be the ones to beat due to BC and speed. Hagar limits your use of VLDs to single load. What's the advantage of the Grendel over the 6mmAR? Your posts are going to eventually cost me money.
Factory ammo support and hunting. I know 6mm will kill, and is very popular for coyote hunting, but I personally prefer to use 6.5mm at a minimum for mule deer and elk. The 6mm wildcats are really good for target, since they are so flat, fast, with BCs in the .5's for G1. Barrel life measured in boxes? 
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Posted: 5/6/2016 12:48:29 PM EDT
[#8]
Pretty much the biggest disadvantage with the 6mm wildcats, .243, etc.
Barrel life is pretty short. No free lunches. I'm still not sure what the barrel life is with 6.5 Grendel. Les Baer has one that was over 22,000 rounds and still holding 1/2 MOA, and that Black Hills load he offers is hot. |
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MI, USA
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Posted: 5/6/2016 9:20:15 PM EDT
[#9]
With a cut rifled high quality steel barrel from Krieger you will spend far more money on ammo or reloads than the cost of the barrel.
For a couple hundred dollars more than a regular barrel you're better off. Getting an accurate load is easy. Every load in my 6mmAR shoots sub moa I think my barrel will shoot the way it does now for several years. The grendel is extremely good with a barrel length you're considering but the 6mm will be a couple hundred fps faster with a bullet having the same BC. They're both good but the 6mm has a slight edge in wind deflection and a little flatter shooting. |
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Posted: 5/7/2016 12:18:04 AM EDT
[#10]
Yes, you can increase barrel life with steel quality.
The harder stainless pipes like Krieger and Bartlein will resist throat erosion and accuracy loss longer, especially if you polish the throat every 100-250rds. My buddy's 20" 6mm AR is basically recoilless. A lot of guys here and in Idaho like them for yotes because they are so flat, and buck the wind so well. 6mm is plenty for yotes too. |
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MB, CAN
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Posted: 12/13/2018 2:52:02 PM EDT
[#11]
For a newbie, what is the recommended twist rate and rifling for the 6mm AR. I have a guy to make me a barrel from a blank, he only does 6 groove rifling. I was going to go with a medium contour 20" barrel. Just looking for opinions.
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Posted: 12/13/2018 8:29:49 PM EDT
[Last Edit: SuperJlarge]
[#12]
Curious at 20” which would win out. A 224 Valkyrie/22 grendel pushing a 88eld or 95 smk over a 6mm AR pushing 105/107’s.
I was pretty set with going with a 6mmAR Turbo for gas gun tactical matches, but I think the 224VALKYRIE may work very well, and there’s factory ammo for when I don’t want to reload. |
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Posted: 12/13/2018 10:29:21 PM EDT
[#13]
Here's a 27" .223 Wylde:
Christmas build.  Attached FileTurns out that's a 27" bbl from muzzle to bolt face - from a 27" Green Mountain Blank. Paladin Machine Service rocks! https://www.facebook.com/pages/Paladin-Machine-Service/106042336407804 My FIL made the bayonet lug from a P-14 lug and cleaned up the Chassepot rifle bayonet and it's 22" blade made in 1869. |
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OH, USA
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Posted: 12/19/2018 9:59:50 PM EDT
[#14]
I went 22” on my fat rat and don’t have any regrets. Long enough to still get good velocity but short enough where it’s very easy to maneuver.
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MD, USA
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Posted: 12/20/2018 8:58:35 AM EDT
[#15]
I have a 20" 6mm Fat Rat and use it to push Sierra 107's to 2750 fps. It's nice and handy at that length barrel, but in hindsight I wish I would have went with a 22-24" with extended gas system.
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