jeanclaudesegal Posted September 1, 2015 Report Share Posted September 1, 2015 Whats up all my 308 forum peeps..Im new here..I thought i would introduce my new 8" SBR 338 federal project that ive been working on for about a year..Today it is complete and i have chronographed it with some pretty interesting results.. Shooting a few of the Federal Factory 180gr Accubond Nosler Ballistic tips i was clocking in around 2139fps-2171fps and shooting some of the American Eagle 185gr soft point factory ammo i was getting around 2087fps-2106fps...I still have some more testing to do with some lighter loads such as the Barnes 160gr ballistic tips..And i have some video footage that i will be releasing of my test results later this week.But for now i have attached a few photos for your viewing..Please tell me what you think. Quote Link to comment Share on other sites More sharing options...
shepp Posted September 1, 2015 Report Share Posted September 1, 2015 Sweet SBR!! welcome from Wisconsin Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 1, 2015 Author Report Share Posted September 1, 2015 thanx.glad to be here among you good folks Quote Link to comment Share on other sites More sharing options...
Tripledeuce Posted September 1, 2015 Report Share Posted September 1, 2015 Welcome! Interesting idea! Purpose? pigs at night in the brush?Respectfully Terry Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted September 1, 2015 Report Share Posted September 1, 2015 Welcome! I'm finding myself torn between jealousy of your fine weapon and irritation at my state officials that stop me from owning such a fine thing.......... Quote Link to comment Share on other sites More sharing options...
shepp Posted September 1, 2015 Report Share Posted September 1, 2015 Welcome! I'm finding myself torn between jealousy of your fine weapon and irritation at my state officials that stop me from owning such a fine thing..........I've always found that odd.... Liberal Illinois and Minnesota sure but Iowa?! Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted September 1, 2015 Report Share Posted September 1, 2015 Iowa is bi-polar, the eastern half is mostly liberal while the western half, where I call home, is conservative. This has produced some very strange compromises that don't satisfy either side. It also secures our spot of first in the nation caucus as the "honest arbiters" of the candidates......hard to throw a rock and not hit a presidential candidate! Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 1, 2015 Report Share Posted September 1, 2015 Damn nice looking SBR! Quote Link to comment Share on other sites More sharing options...
Sisco Posted September 1, 2015 Report Share Posted September 1, 2015 Nice SBR. How is muzzle blast/flash? Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted September 1, 2015 Report Share Posted September 1, 2015 Welcome from AZ ! Nice gun. Notice the velocity dropped about 600 fps with the 8" barrel. How does it cycle ? What the muzzle flash like ? What brake are you using ? Quote Link to comment Share on other sites More sharing options...
GreyGoose Posted September 1, 2015 Report Share Posted September 1, 2015 (edited) Hey welcome from the Idaho Panhandle!Funny, when I picked up my stripper AP lower the other day, as we were doing the paperwork the fella asked me if I was building a pistol or a rifle...I said "a rifle of course, its a .308 receiver for f**k sake", and he smiled at me and said, 'you'd be surprised how many guys are building SBR's with these things".I guess I always thought an SBR would be best served by being chambered in more manageable cartridge, 5.56, maybe 300 Blackout, etc., and never really thought a .308, .338 Fed, or other big bore pistol/SBR made much practical sense.But hey... just looking at that thing, I suppose I could come up with some practical uses for it. ;-)How did it go together, what barrel extension (Armalite or DPMS) did you use? Any particular advice on building on the AP receivers you can pass along?Good lookin rig brother, congrats and post the vids when you get a chance, would luv to see that thing run. Edited September 1, 2015 by GreyGoose Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 1, 2015 Author Report Share Posted September 1, 2015 (edited) Thanx for commenting..glad you guys like it..It was 1 yr in the making..there were alot of uncertainties in the begining due the type of cartridge that was being used to shoot through such a short barrel..Alot of people and some gun smiths never thought it would cycle or function as it does..I was told that i was gonna get horrible velocities ..some gun smiths told me that it either would not cycle or it would cycle too fast causing alot of damage to my upper....Well they were both wrong..... As you can see from the velocity tests i am getting some pretty decent results.. on average im getting close to 2200 fps using the nosler accubond 180gr factory loads, and after calculating the energy in ft lbs it comes out to 2100lbs...There is actually alot of use for it in the real world within a 200yard distance..At close range it should be able to handle some of americas largest game..I like the fact that it uses all of the same 308 components excluding the barrel..I had my machinist gunsmith friend John Barr from Barr Peformance make me a custom stabalizing barrel shroud to keep down the muzzle rise..Below is a list of the pros and cons Pros: Factory loaded Ammunition is widely available at your local sporting goods store and is a Saami standardized round Ammo cost starts at $15.90 per box of 20 Velocity out of an 8" Barrel using a 180gr Nosler Accubond is very close to 2200fps Average Energy in ft lbs is around 2100 Works with your standard .308 Magazines with no modifications and are widely available in your local sporting goods store Ammo capacity in a magpul mag can go up to 25rounds 50 round workable drum is currently available Shots can easily reach over 200yards from a 8"barrel and still be very effective on medium sized game Recoil is the same as a .308 so multiple follow up shots can be fired without loosing too much of your accuracy Very lethal at CQB range on Americas Dangerous Game Compact and more powerful than your average 8" SBRs Works with your standard DPMS Cut AR10 pattern parts and accessories,All upper and lower parts excepting the barrel are interchangable with your standard 308 parts Compact and easy to carry in an automobile and ready for quick draw through a window Reloading components and Bullets are widely availableCons: Loss of velocity from what the bullet was originally designed to do DPMS pattern AR-10 parts and accessories cost more than your average AR15 parts Overall size of lower and upper frame is slightly larger and heavier than your AR15s Very Very Loud Can possibly burn somebodies eyebrows off at close range Charging a round into the chamber must be given more effort due to the larger BCG and stiffer recoil spring Total cost as shown is around $2000 to build from scratch including NFA tax Stamp Edited September 1, 2015 by jeanclaudesegal Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 1, 2015 Author Report Share Posted September 1, 2015 (edited) Hey welcome from the Idaho Panhandle!Funny, when I picked up my stripper AP lower the other day, as we were doing the paperwork the fella asked me if I was building a pistol or a rifle...I said "a rifle of course, its a .308 receiver for f**k sake", and he smiled at me and said, 'you'd be surprised how many guys are building SBR's with these things".I guess I always thought an SBR would be best served by being chambered in more manageable cartridge, 5.56, maybe 300 Blackout, etc., and never really thought a .308, .338 Fed, or other big bore pistol/SBR made much practical sense.But hey... just looking at that thing, I suppose I could come up with some practical uses for it. ;-)How did it go together, what barrel extension (Armalite or DPMS) did you use? Any particular advice on building on the AP receivers you can pass along?Good lookin rig brother, congrats and post the vids when you get a chance, would luv to see that thing run.Thanx for commenting..The Aero precision upper and lower M5 308 recievers are probably one of the best on the market for any custom build..They build to exact specs and they are machined from 7075-T6 Forged Aluminum...My only gripe with them is the front take down pin needs to be slightly longer than your average 308 lower pins..So if you decide to use a DPMS lower parts kit,you will need to buy a longer front take down pin..everything else works great..The recoil from the 8" barrel does not beat you up..if feels very similar to shooting your standard .308..I cant say much for the muzzle blast..It will wake the dead and light up the surrounding areas like the 4th of july..It is extremely loud..Much louder than my 10.5" 50 Beowulf SBR..Here is a video of me shooting my 50 Beowulf SBR in Full Auto https://www.youtube.com/watch?v=uqduhDe8mDo ...My barrel was made custom through Mcgowen Precision Barrels https://www.mcgowenbarrel.com/ ... The BCG and upper and lower are all made by AeroPrecision..Below is my parts list..thanx again for looking Aero Precision M5 Lower with matching upper and BCGSyrac Ordnance Adjustable Gas BlockSamson Carbine Star Quad RailMcgowen Precision 8" BarrelHogue ButtstockCAA Interchangeable pistol GripVortex Spitfire 3x Prism ScopeCMMG Lower parts kitOdin Works Gen2 Enlarged Mag release ButtonBarr Performance Triangular Stabalizing barrel shroud Edited September 1, 2015 by jeanclaudesegal Quote Link to comment Share on other sites More sharing options...
392heminut Posted September 2, 2015 Report Share Posted September 2, 2015 Welcome from New Mexico. That is one badassed looking SBR! Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted September 2, 2015 Report Share Posted September 2, 2015 This is sooooooo freakin awesome!!!! Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 2, 2015 Author Report Share Posted September 2, 2015 Thanx..Glad yall like it.. Here is some more of my SBR Collection .. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted September 2, 2015 Report Share Posted September 2, 2015 (edited) Select fire AP Lower ? You a Manufacturer ? Using a different Registered Lower for testing ? Edited September 2, 2015 by survivalshop Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 2, 2015 Author Report Share Posted September 2, 2015 Select fire AP Lower ? You a Manufacturer ? Using a different Registered Lower for testing ?No i am not a manufacturer and my lower is not select fire..the previous video that i posted of myself shooting my 50 beowulf in full auto was my friends registered NFA fullauto lower..We wanted to see what it was like to shoot the 50 Beowulf at a full rate of fire..And as you can see from the video it was fun and painful at the same time lol Quote Link to comment Share on other sites More sharing options...
survivalshop Posted September 2, 2015 Report Share Posted September 2, 2015 Video was cool , it looked like it had some fire power . Nice selection of SBR's , also . Quote Link to comment Share on other sites More sharing options...
Rsquared Posted September 2, 2015 Report Share Posted September 2, 2015 I do love me some SBR's. And here I thought that my 11 inch AR-10 was spitting some fire. That 50 is pretty bad-ass. Nice job! Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 2, 2015 Author Report Share Posted September 2, 2015 Video was cool , it looked like it had some fire power . Nice selection of SBR's , also .thanx glad u liked it ..The 50 has its weakness in my heart everytime i take her out on a range date.. Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 2, 2015 Author Report Share Posted September 2, 2015 I do love me some SBR's. And here I thought that my 11 inch AR-10 was spitting some fire. That 50 is pretty bad-ass. Nice job!Your 11" AR10 probably looks like my 8" 338 federal when fired..I love to make me some unnecessary noise :) Quote Link to comment Share on other sites More sharing options...
Rsquared Posted September 2, 2015 Report Share Posted September 2, 2015 Yep. She can make some noise while spitting a little flame. But it's also kinda fun to run her quiet from time to time. Well.....quiet is a relative term I guess. Quote Link to comment Share on other sites More sharing options...
jeanclaudesegal Posted September 2, 2015 Author Report Share Posted September 2, 2015 (edited) Nice Rifle,I like that Elcan .I was torn between buying one of those or an Acog.. But for what i was doing with my rifle Hunting/Recreational Shooting, i went with something a little more cheaper but very durable Vortex Spitfire3...If our country ever goes to war on our home grounds i wouldnt hesitate to blow $1200-$2000k on one of them bad boys..What kind of velocities are you getting out of your 11" barrel? Edited September 2, 2015 by jeanclaudesegal Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted September 2, 2015 Report Share Posted September 2, 2015 Hey! Eyes off the Elcan!! I already claimed it in the Will. Lol. Quote Link to comment Share on other sites More sharing options...
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