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AR 10 lower vs AR multi cal lower
#3536957
09/03/12 04:54 AM
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Joined: Aug 2012
Posts: 1,486
Kung Fu Widgeon
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What is the difference in the two? If the multi cal can function with such a wide range of uppers, why not the 308? Why does the 308 have to be AR 10 lower?
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Re: AR 10 lower vs AR multi cal lower
[Re: Kung Fu Widgeon]
#3537000
09/03/12 05:36 AM
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Joined: Sep 2008
Posts: 16,745
KC
THF Celebrity
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THF Celebrity
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Magazine well dimension for one.
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Re: AR 10 lower vs AR multi cal lower
[Re: KC]
#3537007
09/03/12 05:43 AM
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Joined: Aug 2012
Posts: 1,486
Kung Fu Widgeon
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I thought a 50 beowolf could fit on a multi cal which would require a larger mag well than a 308, right?
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Re: AR 10 lower vs AR multi cal lower
[Re: Kung Fu Widgeon]
#3538039
09/03/12 06:14 PM
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Joined: Sep 2011
Posts: 3,078
Vern1
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It's the LENGTH of the magazine and the extra distance the AR10 has to cycle the bolt to load longer ammo.
A multi caliber AR15 lower will shoot multiple calibers of bullets but they are limited in length by the magazine.
Put an AR10 receiver and an AR15 receiver side by side and the difference is VERY obvious.
Cheers, Vern1 Texans since The Old 300 in 1824 NRA Lifetime Member
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Re: AR 10 lower vs AR multi cal lower
[Re: Kung Fu Widgeon]
#3538152
09/03/12 07:01 PM
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Joined: Sep 2006
Posts: 33,150
kmon11
junior
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junior
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I thought a 50 beowolf could fit on a multi cal which would require a larger mag well than a 308, right? Nope the Beowulf fits a standard M4 or AR15 lower. Also I see several posts in this thread refering to Long action. While the AR10 is longer and larger than the AR15 the AR10 is chambered for what are considered short action calibers when talking other gun types ie bolt or lever. The AR10 is designed around the 7.62 Nato (308 Winchester) cartridge and can be found with barrels for some of the other 308 family of cartridges that share the same case but different bullet diameters like 243, 260, 7mm-08, 308 and 338 Federal plus some others of the same overall legnth.
lf the saying "Liar, Liar your pants on fire" were true Mainstream news might be fun to watch
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Re: AR 10 lower vs AR multi cal lower
[Re: kmon11]
#3539288
09/04/12 01:36 AM
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Joined: Nov 2011
Posts: 1,202
Adelbridge
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The AR-10s are also built to handle significantly higher pressures. AR-10s weigh about 2-3 lbs more on average. My unloaded AR-10 is was advertised at 11 lbs. Add a scope and a full mag and it is suited for bench shooting and blind hunting. When I bought mine I thought I would get a .243 for my kid to hunt with but it is too heavy for her.
Last edited by Adelbridge; 09/04/12 01:37 AM.
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Re: AR 10 lower vs AR multi cal lower
[Re: Adelbridge]
#3541446
09/04/12 08:27 PM
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Joined: Sep 2012
Posts: 126
fonzo
Woodsman
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Woodsman
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just to add on, the beowulf works just fine on the multi-cal lowers, that's what mine is on. standard mags work just fine also. the ammo fits just fine in a magpul or metal magazine also, i tend to use the metal magazines though
 First one down, many many more to come!
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Re: AR 10 lower vs AR multi cal lower
[Re: Adelbridge]
#3541897
09/04/12 11:09 PM
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Joined: Sep 2006
Posts: 33,150
kmon11
junior
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junior
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The AR-10s are also built to handle significantly higher pressures. AR-10s weigh about 2-3 lbs more on average. My unloaded AR-10 is was advertised at 11 lbs. Add a scope and a full mag and it is suited for bench shooting and blind hunting. When I bought mine I thought I would get a .243 for my kid to hunt with but it is too heavy for her. 556 is loaded to higher PSI than 308 or 243, the larger cartridges do have more square inches though because they are bigger. The AR10 is physically bigger to function with a bigger cartridge, not neceaaarly higher pressure
lf the saying "Liar, Liar your pants on fire" were true Mainstream news might be fun to watch
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Re: AR 10 lower vs AR multi cal lower
[Re: kmon11]
#3544265
09/05/12 05:00 PM
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Joined: Aug 2012
Posts: 22
TeeTen
Light Foot
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Light Foot
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556 is loaded to higher PSI than 308 or 243, the larger cartridges do have more square inches though because they are bigger. The AR10 is physically bigger to function with a bigger cartridge, not neceaaarly higher pressure
There's No Replacement For Displacement 
If we have our health we have everything. Be Well.
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Re: AR 10 lower vs AR multi cal lower
[Re: TeeTen]
#3544784
09/05/12 07:34 PM
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Joined: Sep 2006
Posts: 33,150
kmon11
junior
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junior
Joined: Sep 2006
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There's No Replacement For Displacement Very true.
lf the saying "Liar, Liar your pants on fire" were true Mainstream news might be fun to watch
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Re: AR 10 lower vs AR multi cal lower
[Re: TeeTen]
#3545304
09/05/12 10:33 PM
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Joined: Jul 2008
Posts: 6,577
Chopped54
THF Trophy Hunter
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There's No Replacement For Displacement Forced induction!!!
Wealth is of the heart and mind and not of the pocket
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Re: AR 10 lower vs AR multi cal lower
[Re: Chopped54]
#3546530
09/06/12 03:47 AM
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Joined: Jun 2012
Posts: 47
B MADIGAN
Light Foot
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Light Foot
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There's No Replacement For Displacement Forced induction!!! +1
Blake Madigan Social Media Rep Liberty Suppressors 817-999-2825
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Re: AR 10 lower vs AR multi cal lower
[Re: B MADIGAN]
#3547696
09/06/12 05:45 PM
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Joined: Nov 2011
Posts: 1,202
Adelbridge
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put a whipple on your flatop
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Re: AR 10 lower vs AR multi cal lower
[Re: Adelbridge]
#3547712
09/06/12 05:50 PM
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Joined: Jul 2008
Posts: 6,577
Chopped54
THF Trophy Hunter
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THF Trophy Hunter
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put a whipple on your flatop I laughed....
Wealth is of the heart and mind and not of the pocket
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