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Joined: Jun 2013
Posts: 227
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OP
Campfire Member
Joined: Jun 2013
Posts: 227 |
Interestingly enough, Quickload has a wildcat with approx. the same case capacity as this round. Won't do even close to 2750 without getting into pressures too high for an AR (or at least one I'm shooting). Keep in mind its not using a standard bolt. So what kind of pressures can you run with this super bolt? I really don't know what they are getting. http://www.ar15performance.com/_6br___800_series_bolts"The sets(only sold in sets) available currently use a standard thread .812-16TPI extension like most AR15s, The long extensions are not avail at this time. The bolt face allows the use of .473 or 308 rim sized cases in a AR15. The bolts fit any mil spec AR15/M16 carrier. The bottom 2 lugs are clearanced to pass over rounds in the mag. BR(308) diameter cases feed from 6.8 mags, either CPD or PRI mags allow loading to 2.295 OAL. 10 fit in a 15 round mag. 8/10/12" ![[Linked Image]](http://pm.b5z.net/i/u/6132121/i/6br_ezr.jpg)
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Joined: Aug 2005
Posts: 15,652 Likes: 3
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,652 Likes: 3 |
I just love how it's .277" anything and we are talking about "long range"...
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Joined: Nov 2011
Posts: 31,104 Likes: 5
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,104 Likes: 5 |
So, in other words......you have no idea what pressure levels would be reasonable considered safe with this "super" bolt....super thin walled bolt???
With QL, if I take the parent case 6.5x47 Lapua sideways, I can get 130gr bullet out at 2800.....at 63K psi.....
What's the H20 Capacity at overflow?
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Joined: May 2007
Posts: 7,766
Campfire Outfitter
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Campfire Outfitter
Joined: May 2007
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So, in other words......you have no idea what pressure levels would be reasonable considered safe with this "super" bolt....super thin walled bolt???
With QL, if I take the parent case 6.5x47 Lapua sideways, I can get 130gr bullet out at 2800.....at 63K psi.....
What's the H20 Capacity at overflow? Don't forget the bottom two lugs that are "clearanced"... That HAS to make them stronger right? And H20 capacity?....  Um hello obvious uh right up to the case mouth.
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Joined: Jan 2013
Posts: 3,081
Campfire Tracker
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Campfire Tracker
Joined: Jan 2013
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I may be interested, waiting for verdict on the pending "gay/not gay"decision. Pighunter, can I order directly from you, or do I need to go through your website?
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Joined: Jun 2013
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Campfire Member
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OP
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Posts: 227 |
I'm not affiliated just posting up info for the trolls to insult me with;)
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Joined: Nov 2011
Posts: 31,104 Likes: 5
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,104 Likes: 5 |
I'm not affiliated just posting up info for the trolls to insult me with;) If you've got the info, what's the H2o capacity at overflow?
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Joined: Jun 2013
Posts: 227
Campfire Member
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OP
Campfire Member
Joined: Jun 2013
Posts: 227 |
I'm not affiliated just posting up info for the trolls to insult me with;) If you've got the info, what's the H2o capacity at overflow? I don't have it but the developer said it was the same as the Remington 30AR so that should be on the net somewhere. I googled it and came up with the number 44 but not sure what to do with it.
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Joined: Jun 2005
Posts: 27,500
Campfire Ranger
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Campfire Ranger
Joined: Jun 2005
Posts: 27,500 |
To me, this whole AR-15 big game cartridge business is like trying to make a pickup truck out of a Pinto. Just buy a Damned pickup truck!
If I want to hunt big game with an AR (I don't) Give me an AR-10 in some kind of '08 based cartridge, most likely a 6.5/08. Even then I am not going to be really happy about it because to me, medium to big game cartridges all burn 70-90 grs of powder and push monolithic bullets with a good BC and SD out the snout at 3000fps or more and 3500 or more is better still.
Nothing that will run in an AR is ever going to be a 257WBY or a 7mm Mashburn Super or a 340 or a ......
And they are heavy for the amount of power you get, and ugly.
I have had a few, got a really nice one with a Schneider barrel and Jewel Trigger for sale right now and wen it sells I will probably will get another. But a proper big game rifle, they ain't.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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Joined: Sep 2001
Posts: 19,093 Likes: 5
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,093 Likes: 5 |
QuickLoad database has case volume of the 30 Rem AR as 44.0gr.
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Joined: Sep 2001
Posts: 19,093 Likes: 5
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,093 Likes: 5 |
Ran some quick calcs on QuickLoad based on edited 30 AR case. 20" bbl, 55k PSI, BL-C2.
Ballpark velocity predictions
130 Ballistic tip - 2650 fps
140 Accubond - 2550 fps
150gr Ballistic tip - 2450 fps.
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Joined: Jun 2013
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Campfire Member
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OP
Campfire Member
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Ran some quick calcs on QuickLoad based on edited 30 AR case. 20" bbl, 55k PSI, BL-C2.
Ballpark velocity predictions
130 Ballistic tip - 2650 fps
140 Accubond - 2550 fps
150gr Ballistic tip - 2450 fps. Can you run some scenarios with more allowed PSI? Try using Accurate 2520 powder.
Last edited by SanCalPigHunter; 07/16/13.
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Joined: Sep 2001
Posts: 19,093 Likes: 5
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,093 Likes: 5 |
I can do that.
give me:
- max psi
- bullet
- powder
- barrel length
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Joined: Jun 2005
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Campfire Ranger
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Campfire Ranger
Joined: Jun 2005
Posts: 27,500 |
Those numbers are weaker than what the puny and obsolete 300 Savage brings to the table.
Hmmmm, 150grs at 2450.... sounds kinda like a 30/30 to me. Hard to get too riled up about a plastic stocked and homely 30/30 clone.
Ran some quick calculations based on this round compared to about any normal bolt action rifle round and it looks like this:
WEAK AND ANEMIC
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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Joined: Jun 2013
Posts: 227
Campfire Member
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OP
Campfire Member
Joined: Jun 2013
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- max psi 65,000
- bullet 130gr Hornady SST
- powder Accurate 2520 39gr
- barrel length 20in
Last edited by SanCalPigHunter; 07/16/13.
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Joined: Feb 2010
Posts: 1,717
Campfire Regular
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Campfire Regular
Joined: Feb 2010
Posts: 1,717 |
Why are guys so horned up about utilizing the AR-15 for heavier duty cartridges? Buy a R-25 in 7-08 and go and wreck schit. I don't get all the fuss.
If I were smart enough, which apparently I'm not
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Joined: Sep 2001
Posts: 19,093 Likes: 5
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,093 Likes: 5 |
Looks like 2750-ish fps at 65K psi
Cartridge : .30 Rem AR, edited to .277 bore and bore square area
Bullet : .277, 130, Hornady SST InterLock 27302
Cartridge O.A.L. L6: 2.260 inch or 57.40 mm
Barrel Length : 20.0 inch or 508.0 mm
Powder : Accurate 2520
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.703% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-27.0 77 27.00 2031 1191 25234 6501 89.9 1.491
-24.3 80 28.00 2107 1281 27811 6805 91.7 1.433
-21.6 83 29.00 2182 1375 30620 7095 93.3 1.378
-18.9 86 30.00 2258 1472 33675 7367 94.8 1.325
-16.2 89 31.00 2334 1572 37035 7621 96.1 1.274
-13.5 91 32.00 2409 1676 40742 7852 97.2 1.219
-10.8 94 33.00 2485 1782 44836 8059 98.1 1.167
-08.1 97 34.00 2559 1891 49363 8240 98.9 1.117 ! Near Maximum !
-05.4 100 35.00 2634 2003 54376 8393 99.4 1.070 !DANGEROUS LOAD-DO NOT USE!
-02.7 103 36.00 2708 2117 59940 8515 99.8 1.025 !DANGEROUS LOAD-DO NOT USE!
+00.0 106 37.00 2781 2233 66129 8605 100.0 0.983 !DANGEROUS LOAD-DO NOT USE!
+02.7 109 38.00 2854 2351 73036 8667 100.0 0.942 !DANGEROUS LOAD-DO NOT USE!
+05.4 111 39.00 2926 2472 80769 8720 100.0 0.904 !DANGEROUS LOAD-DO NOT USE!
+08.1 114 40.00 2998 2594 89463 8765 100.0 0.867 !DANGEROUS LOAD-DO NOT USE!
+10.8 117 41.00 3069 2720 99281 8802 100.0 0.832 !DANGEROUS LOAD-DO NOT USE!
+13.5 120 42.00 3141 2848 110430 8829 100.0 0.798 !DANGEROUS LOAD-DO NOT USE!
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Joined: Jun 2013
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Campfire Member
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OP
Campfire Member
Joined: Jun 2013
Posts: 227 |
Why are guys so horned up about utilizing the AR-15 for heavier duty cartridges? Buy a R-25 in 7-08 and go and wreck schit. I don't get all the fuss. Because thats no fun i can't build it with a 80% lower and all the rest of the fun stuff i enjoy. I want to build it and load it and develop loads for it and hunt with it.
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Joined: Jun 2013
Posts: 227
Campfire Member
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OP
Campfire Member
Joined: Jun 2013
Posts: 227 |
Looks like 2750-ish fps at 65K psi
Cartridge : .30 Rem AR, edited to .277 bore and bore square area
Bullet : .277, 130, Hornady SST InterLock 27302
Cartridge O.A.L. L6: 2.260 inch or 57.40 mm
Barrel Length : 20.0 inch or 508.0 mm
Powder : Accurate 2520
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.703% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-27.0 77 27.00 2031 1191 25234 6501 89.9 1.491
-24.3 80 28.00 2107 1281 27811 6805 91.7 1.433
-21.6 83 29.00 2182 1375 30620 7095 93.3 1.378
-18.9 86 30.00 2258 1472 33675 7367 94.8 1.325
-16.2 89 31.00 2334 1572 37035 7621 96.1 1.274
-13.5 91 32.00 2409 1676 40742 7852 97.2 1.219
-10.8 94 33.00 2485 1782 44836 8059 98.1 1.167
-08.1 97 34.00 2559 1891 49363 8240 98.9 1.117 ! Near Maximum !
-05.4 100 35.00 2634 2003 54376 8393 99.4 1.070 !DANGEROUS LOAD-DO NOT USE!
-02.7 103 36.00 2708 2117 59940 8515 99.8 1.025 !DANGEROUS LOAD-DO NOT USE!
+00.0 106 37.00 2781 2233 66129 8605 100.0 0.983 !DANGEROUS LOAD-DO NOT USE!
+02.7 109 38.00 2854 2351 73036 8667 100.0 0.942 !DANGEROUS LOAD-DO NOT USE!
+05.4 111 39.00 2926 2472 80769 8720 100.0 0.904 !DANGEROUS LOAD-DO NOT USE!
+08.1 114 40.00 2998 2594 89463 8765 100.0 0.867 !DANGEROUS LOAD-DO NOT USE!
+10.8 117 41.00 3069 2720 99281 8802 100.0 0.832 !DANGEROUS LOAD-DO NOT USE!
+13.5 120 42.00 3141 2848 110430 8829 100.0 0.798 !DANGEROUS LOAD-DO NOT USE!
Ok so its all about how much PSI his super bolt can handle. If its in the high 60's then his numbers are completely legit.
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Joined: Nov 2011
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,104 Likes: 5 |
Modern bolt action rifles are generally rated at 65k.
With that in mind, do you want to chance it with his "super bolt" at 66k?
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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