AR-15 Builders

#126
#126
InVOLuntary said:
I was contemplating that until these guys pointed out that it was balistically similar to a 30/30.
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What do u not like about the balistics? A hot loaded .300 BLK, 30/30 and 7.62 are all pretty similar, from what I understand.
 
#127
#127
ACvol3 said:
What do u not like about the balistics? A hot loaded .300 BLK, 30/30 and 7.62 are all pretty similar, from what I understand.
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Ammo availability is the large drawback with the Blackout. It tends to be more expensive and limited to a few sources.
 
#128
#128
Not going to quote, but that was great info GV, thanks so much. I'm happy that I was already aware of a number of things you mentioned, so I feel like I've been educating myself sufficiently. I printed out Brownells AR-15 parts checklist and have been researching the various subsystems. I'm pretty set on the 20" barrel, as I'm specifically wanting range on the rifle. I will dig into your recommendations and pop back with questions when they come up, as I know they will.
 
#130
#130
ACvol3 said:
What do u not like about the balistics? A hot loaded .300 BLK, 30/30 and 7.62 are all pretty similar, from what I understand.
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Nothing really against it. I just don't personally have a use for it. I would rather do a larger AR10 in .308. With the Ammo being so expensive it's not something I would shoot a lot. Even with a .223 it's still $10 to empty a 30 round mag.

I thought a 7.62x39 had a little more firepower behind it. One thing I don't know is if they've perfected the 7.62x39 in the AR platform.
 
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#131
#131
ACvol3 said:
But, swap out barrels, and u can shoot your 556 ammo.
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I have no problems with the .300 Blk under certain conditions. As Dave said, it's great in the subsonic range with a suppressor (though I don't have either) and makes a decent brush caliber. But it's a niche caliber that honestly has limited range.

I believe the 6.8 has the most capabilities for the platform. Personal opinion of course.
 
#132
#132
Grand Vol said:
I have no problems with the .300 Blk under certain conditions. As Dave said, it's great in the subsonic range with a suppressor (though I don't have either) and makes a decent brush caliber. But it's a niche caliber that honestly has limited range.

I believe the 6.8 has the most capabilities for the platform. Personal opinion of course.
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What about the 7.62x39 in the AR? Does it perform well both mechanically and ballistically? Is the 6.8 a better round for hunting deer and pigs?
 
#133
#133
InVOLuntary said:
What about the 7.62x39 in the AR? Does it perform well both mechanically and ballistically? Is the 6.8 a better round for hunting deer and pigs?
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The magazine has been and will likely continue to be the weak link in any 7.62x39mm AR platform. There just hasn't ever been a reliable magazine that's compatible with the platform save the LAR-47 which uses the AK mags. Though with a goofy mag release.

The 6.8 is perfectly fine for pigs and deer. Especially with the Hornady 120 grain SST or the Federal Fusion 115 grain softpoint.
 
#134
#134
Grand Vol said:
The magazine has been and will likely continue to be the weak link in any 7.62x39mm AR platform. There just hasn't ever been a reliable magazine that's compatible with the platform save the LAR-47 which uses the AK mags. Though with a goofy mag release.

The 6.8 is perfectly fine for pigs and deer. Especially with the Hornady 120 grain SST or the Federal Fusion 115 grain softpoint.
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I'd like to build another that I would feel comfortable shooting deer and hogs. I'll likely do the 6.8. I hope those lowers go on sale again soon so I can order a couple more.
 
#136
#136
I'm assuming that no answer to my question is a "No". I already have a 20" long range rifle, just dropped and wilson combat trigger single stage in it. Getting ready to replace the gas block from the A2 front sight to a low profile gas block and install some ATI free float hand guards with a FS8 nose cone. My next project will be to use the warlock system to build a mill spec AR15 chambered in 5.56 and the other barrel will be 7.62x39.
I know there are a few systems out there where you can fairly easily and quickly change out the barrel. I'm looking forward to seeing how this works.
 
#137
#137
AllVols said:
I'm assuming that no answer to my question is a "No". I already have a 20" long range rifle, just dropped and wilson combat trigger single stage in it. Getting ready to replace the gas block from the A2 front sight to a low profile gas block and install some ATI free float hand guards with a FS8 nose cone. My next project will be to use the warlock system to build a mill spec AR15 chambered in 5.56 and the other barrel will be 7.62x39.
I know there are a few systems out there where you can fairly easily and quickly change out the barrel. I'm looking forward to seeing how this works.
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Please keep us informed. I know nothing of the system but I gonna read up on it for sure.
 
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#138
#138
AllVols said:
I'm assuming that no answer to my question is a "No". I already have a 20" long range rifle, just dropped and wilson combat trigger single stage in it. Getting ready to replace the gas block from the A2 front sight to a low profile gas block and install some ATI free float hand guards with a FS8 nose cone. My next project will be to use the warlock system to build a mill spec AR15 chambered in 5.56 and the other barrel will be 7.62x39.
I know there are a few systems out there where you can fairly easily and quickly change out the barrel. I'm looking forward to seeing how this works.
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From what I see in the Warlock video, you really are replacing everything from the barrel nut on forward as well as the BCG. It looks deceptively simple, but I'm not seeing the huge savings here as you only "save" on the upper receiver itself. I'd be curious as to tests on their return to zero after installing such items. As well as the headspacing issue.

Your money my friend...
 
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#139
#139
Grand,

Do you have any experience with the .450 Bushmaster? This might be a decent alternative for hunting big game.
 
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#140
#140
Grand Vol said:
From what I see in the Warlock video, you really are replacing everything from the barrel nut on forward as well as the BCG. It looks deceptively simple, but I'm not seeing the huge savings here as you only "save" on the upper receiver itself. I'd be curious as to tests on their return to zero after installing such items. As well as the headspacing issue.

Your money my friend...
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I watched a YouTube video and you don't have to change out the whole BCG, just the bolt itself. Maybe firing pin too, not sure.
 
#141
#141
InVOLuntary said:
Grand,

Do you have any experience with the .450 Bushmaster? Thus might be a decent alternative for hunting big game.
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No, read a bit about it some years ago, but that's about it. If I recall correctly, of the two calibers the .458 SOCOM has more going for it.
 
#142
#142
InVOLuntary said:
I watched a YouTube video and you don't have to change out the whole BCG, just the bolt itself. Maybe firing pin too, not sure.
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You still should be checking the headspace each and every time you do anything with the barrel. On the site, they claim you only need to do it once upon installation of the system. And technically, any time you change out a bolt it should be checked as well, though many don't.

I'm one of those people that would rather be safe than sorry.
 
#143
#143
Grand Vol said:
You still should be checking the headspace each and every time you do anything with the barrel. On the site, they claim you only need to do it once upon installation of the system. And technically, any time you change out a bolt it should be checked as well, though many don't.

I'm one of those people that would rather be safe than sorry.
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You're the expert so I'm going with you. :)
 
#144
#144
InVOLuntary said:
You're the expert so I'm going with you. :)
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I'm by no means an expert. And perhaps they extensively tested that system with headspace in mind and came up with a big fat goose egg in the end. And just didn't list the results on the site. (It'd give some of us a warm fuzzy if they did)

I think it's a novel concept and likely "saves" in the long run if you are running three or more calibers with the same scope (having to rezero it each time though) and other associated parts like a charging handle. But I'm also of the mind having a separate upper for each caliber along with the scope and pulling two pins is easier. You don't have to worry about the headspace issue and don't have to worry about zeroing a scope in again. To each their own though and if folks want to give it a whirl, it's their money and I have no say-so in the matter.
 
#145
#145
Grand Vol said:
I'm by no means an expert. And perhaps they extensively tested that system with headspace in mind and came up with a big fat goose egg in the end. And just didn't list the results on the site. (It'd give some of us a warm fuzzy if they did)

I think it's a novel concept and likely "saves" in the long run if you are running three or more calibers with the same scope (having to rezero it each time though) and other associated parts like a charging handle. But I'm also of the mind having a separate upper for each caliber along with the scope and pulling two pins is easier. You don't have to worry about the headspace issue and don't have to worry about zeroing a scope in again. To each their own though and if folks want to give it a whirl, it's their money and I have no say-so in the matter.
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That's kind of my feelings on the matter too. I noticed in the video they mentioned milling the ejection port slightly for the larger calibers (450, 458) to allow more clearance. That didn't give me a good feeling either.
 
#146
#146
I'll keep you informed. They claim you can run 60 different calibers. I'm just trying 2 for now. Also in the future I'd like to try the 300 black out, but before I buy that, I'm going to invest in the C308 by century arms, but that gun in not for this thread.
 
#147
#147
GV, earlier in the thread you posted the picture of the various ways to match up barrel feed to the upper receiver. The two "good" options were rifle feed to rifle receiver and M4 feed to M4 receiver. Shopping around barrels and upper receivers, almost all of what I'm finding is M4 to M4. If I'm going with the 20" rifle barrel, do I need to find a true rifle to rifle set, or is it sufficient to mate a 20" barrel with M4 extension to a regular M4 receiver?
 
#148
#148
UTVolinExile said:
GV, earlier in the thread you posted the picture of the various ways to match up barrel feed to the upper receiver. The two "good" options were rifle feed to rifle receiver and M4 feed to M4 receiver. Shopping around barrels and upper receivers, almost all of what I'm finding is M4 to M4. If I'm going with the 20" rifle barrel, do I need to find a true rifle to rifle set, or is it sufficient to mate a 20" barrel with M4 extension to a regular M4 receiver?
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Yes, one doesn't have anything to do with the other so to speak. The extension is the critical part you are looking for and as long as that has the M4 style ramps, you'll be good to go.

Long story short, the extension is screwed into the barrel. It comes as a complete set and already torqued down from most manufacturers. So you can have a "rifle" barrel with an M4 extension.
 
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#149
#149
InVOLuntary said:
I'd like to build another that I would feel comfortable shooting deer and hogs. I'll likely do the 6.8. I hope those lowers go on sale again soon so I can order a couple more.
Click to expand...

You can use the .223 bullets for deer/hogs...people do it all the time...but you do need to be aware of the bullets. There are lots of bullets for blasting and target shooting but a more limited selection that are actually intended for shooting game and at the heavier end of what your barrel will stabilize. (I'd be wanting no less than a 1-8 twist anyway) I'm partial to Barnes TSX and Sierra GameKings but there's several others.

Now having said the above a 6.8 would probably be even better as a dedicated hunting caliber.
 
#150
#150
hndog609 said:
You can use the .223 bullets for deer/hogs...people do it all the time...but you do need to be aware of the bullets. There are lots of bullets for blasting and target shooting but a more limited selection that are actually intended for shooting game and at the heavier end of what your barrel will stabilize. (I'd be wanting no less than a 1-8 twist anyway) I'm partial to Barnes TSX and Sierra GameKings but there's several others.

Now having said the above a 6.8 would probably be even better as a dedicated hunting caliber.
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You should check out the Federal bonded 62 grain softpoints.

Nasty expansion on them.
 
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