|
|
Post by GLSHOOTER on Apr 27, 2013 10:56:18 GMT -8
Hi Hogwild, What would be the advantage of using the 6075 Rather than the one with the Higher Tensile Strength? Is it easier to stamp a Logo on one type as opposed to the OTHER type? Eric Just easier to machine and a bit harder overall. Other than that for teh consumer nadda. Also never forget the COOL FACTOR Greg |
|
|
|
Post by hogwild on Apr 27, 2013 18:57:55 GMT -8
I am far from an expert, and even though I have hunted for many years, this is my first AR build. Since I wanted to build a 6.8 SPC for hog hunting in Texas I needed help. I chose a builder in Texas (Lone Star Armory) as they were recommended to me by people I know in Dallas. They proposed using their 6061 billet receivers, which I believe are made for them by Sun Devil Manufacturing. I had read that 7075 was a better aluminum alloy than 6061, but both were adequate for the purpose.
In doing a little research on Sun Devil I found the following:
"Sun Devil Manufacturing has done extensive research and testing for optimum metallurgy. David, the owner of Sun Devil Manufacturing, tells me that for safety reasons they have chosen not to manufacture receivers in the traditional 7075 aluminum, he feels that due to improvements in available materials and processes there are now superior alloys. Sun Devil Manufacturing prefers 6061, an alloy used extensively in aircraft. David explained that 6061 has better elasticity than 7075 and is less likely to fragment into pieces in the event of a catastrophic case failure. Yet another reason to go billet"
I have no way to judge the accuracy of this statement and there is much more support for 7075 in many forums. The receivers looked great to me, so I decided to stay with their recommendation.
John
|
|
|
|
Post by hogwild on Apr 27, 2013 19:08:30 GMT -8
|
|
|
|
Post by Tooreal on Apr 29, 2013 20:31:04 GMT -8
Thank you Greg & John, I had No idea there was that much difference in 6061 Billet & 7075 Billet, I learned something.!.. Thank you Both for sharing that information, I guess the 7075 is Brittle like Tungsten, it's the Heaviest Metal, but it's also Brittle. I've tried to cut 1/8" Round sticks of Tungsten with Lineman pliers but it won't cut, it will almost shatter instead? It's interesting stuff to say the least? I was wondering why my Billet Upper & Lowers were so incredibly light weight, although they are thicker & Beefier than regular forged receivers. I will have to try out a 6061 Billet Lower just to see the difference in the two different types of Billet? I built a .50 Caliber Beowulf when I ran across a Bolt & Barrel that I just couldn't pass up. Being concerned about the upper receiver thickness & Strength was a Big factor in my choice of using a Slick sided DPMS Tall railed upper receiver for mounting Optics ( and Competition shooting? maybe) . I had too open up the side of that upper receiver so the Brass would eject and get out of the Gun when I fired it. Man, I'm here to Tell you, That was NO EASY TASK AT ALL!!! I started using a Drimmel tool then an End mill using a rather Large Drill Press, while holding the upper by hand ( Not Smart) I Knew Better but I was in a Hurry because I wanted to shoot that Hog Legged Bullet SO BAD  . After being Slung Around the Bench a few times I Finally stopped that and moved on to an Air driven Nibbler. With that and a Good Bit of Time, I was able to finish opening it up and straightening out the wavy cuts that I left with the End Mill and smoothing the edges out and then making it all Black again. When you are cutting a piece of 1/4" Aluminum at a 45° Angel it's more like cutting 3/8" to 1/2" Aluminum Billet (I think)?But that was A LOT HARDER THAN I WOULD HAVE EVER IMAGINED it would be, and Very time consuming too! I'm pretty sure that was 6061 Billet Aluminum, man that was done tough stuff.   ;D I Love my Wulf, but I won't use an Upper like that ever again, if I have to do any major work altering the upper and that's a Fact!. That AR is one of the Best shooting, Crowd Gathering Hand Cannons I have ever shot, & it's accurate too! A 400 Grain Flat Tipped seems to shoot the Best for me so far, and I would Bet that it would go thru an engine Block easily! It is a Disastrous Cavern leaving weapon that leaves HUGE Holes in whatever you shoot. I just got a Box of 50 Sierra 350 Grain Hollow Points, and a Box of 325 Grain soft point bullets to load up and try out & I am sure they will be Great. I would Love to try out some 500 Grain Solid Brass Bullets, just to see what it won't go through ;D   . I bet they will go thru just about anything? I can't wait to try those out, it's Got to be Awesome. Thanks for sharing your knowledge with me. John, I love the looks of your Billet Receivers, The Logo is really Cool looking by the way, and Congrats on an Awesome Build. Have you ever shot a Hog with a .50 Caliber Beowulf AR-15? I'm sure it would do a Really good job of putting that lil piggy down! See Ya Eric |
|
|
|
Post by hogwild on Apr 29, 2013 22:55:22 GMT -8
Eric
This build is my first AR, so I haven't shot any hogs with any AR. I am building the 6.8 SPC hoping it will do an adequate job on then. While I live in Washington, I have a small place in Texas and was able to shoot some hogs this February and March. I was surprised how tough they are. I hunted them under a feeder light at night and it was a fun challenge. I used a 308 bolt action and Barnes ammo, but plan on using the AR next year during the same time frame.
John
|
|
. After being Slung Around the Bench a few times I Finally stopped that and moved on to an Air driven Nibbler. With that and a Good Bit of Time, I was able to finish opening it up and straightening out the wavy cuts that I left with the End Mill and smoothing the edges out and then making it all Black again. When you are cutting a piece of 1/4" Aluminum at a 45° Angel it's more like cutting 3/8" to 1/2" Aluminum Billet (I think)?But that was A LOT HARDER THAN I WOULD HAVE EVER IMAGINED it would be, and Very time consuming too! 
. I bet they will go thru just about anything? I can't wait to try those out, it's Got to be Awesome.