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Just finished assembling my latest AR10 (.375 Raptor).
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 Location: Central Washington(Wenatchee area). Joined: Tue Aug 16, 2011 Posts: 439 Real Name: Landon 
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UPS finally delivered the scope, mount and trigger yesterday evening. swapped the Mil-Spec trigger out and got the scope squared and mounted. I ordered some Lehigh Defense 250gr Controlled Fracturing bullets along with some Cutting Edge "Maximus" bullets but they won't be delivered until the 26th. For now I'll zero it and break in the barrel with the 250gr Sierra's.
The .375 Raptor case is simply formed. One pass with a .308 Win case, through a .375 Raptor full length die. Then trim to length and load. The .375 Raptor produced 3360+ foot pounds of energy at the muzzle with the 250gr Sierra's and is still a heavy hitter with the 350gr Sierra Match King's subsonic. .375 Raptor Aero Precision M5 upper, lower set Aero Gen II 15" Keymod handguard 18" X-Caliber stainless barrel 10 twist Mid length gas SPR contour 11/16-24 muzzle threads Anderson adjustable gas block Wilson Combat TR-QCOMP NIB coated bolt carrier group Ambi selector/safety Odin extended Mag release Phase 5 extended bolt catch/release CMC flat two stage 2/2 trigger Ant rotation pins Magpul grip MILBUS carbine stock Kinetic Development Group Sidelok 30mm mount Leupold 4.5-14x50 Long Range Precision (LRP) Impact 32 MOA reticle  .308 case left/ .375 Raptor right.    _________________ The true eye sees not the despair of its victims, only the elegance of equilibrium. It's a demonstration of superior judgment. |
| Thu Dec 21, 2017 1:57 pm |
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Site Moderator   Location: Marysville Joined: Thu Mar 22, 2012 Posts: 13503 Real Name: Mike
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Never heard of that caliber, time to do some research. Good looking build bud! I love the CMC flat 3.5lbs triggers!
_________________ Licensed/Bonded/Insured Hardwood Floor Installer/Finisher http://www.hardwoodfloorsnw.com/ |
| Thu Dec 21, 2017 2:28 pm |
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 Site Admin   Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 52031 Real Name: Steve
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Whoa. OK, that looks like a pile of fun right there.
Awaiting pics showing a 0.3 MOA group from "cold barrel, just breaking it in with some random factory ammo I found."  _________________ Steve Benefactor Life Member, National Rifle Association Life Member, Second Amendment Foundation Patriot & Life Member, Gun Owners of America Life Member, Citizens Committee for the Right to Keep and Bear Arms Legal Action Supporter, Firearms Policy Coalition Member, NAGR/NFGR Please support the organizations that support all of us. Leave it cleaner than you found it. |
| Thu Dec 21, 2017 2:31 pm |
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Site Supporter   Location: West Olympia Joined: Mon May 28, 2012 Posts: 6817 Real Name: Matt
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I have been wanting to do a 338 federal or 358 Winchester for years. Did not know someone had taken it up another caliber. Only makes sense. Are projectiles high as hell?
_________________ "I'm Hub McCann. I've fought in two World Wars and countless smaller ones on three continents. I led thousands of men into battle with everything from horses and swords to artillery and TANKS! I've seen the headwaters of the Nile, and tribes of natives no white man had ever seen before. I've won and lost a dozen fortunes, KILLED MANY MEN! And loved only one woman, with a passion a FLEA like you could never begin to understand. That's who I am. NOW, GO HOME, BOY!" "I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones". Albert Einstein 1947 |
| Thu Dec 21, 2017 2:56 pm |
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Location: Central Washington(Wenatchee area). Joined: Tue Aug 16, 2011 Posts: 439 Real Name: Landon
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mcyclonegt wrote: I have been wanting to do a 338 federal or 358 Winchester for years. Did not know someone had taken it up another caliber. Only makes sense. Are projectiles high as hell? I paid $120.00 for 100 Lehigh 250gr Controlled Fracturing bullets It's $82.00 per 50 for the 256gr Hammer bullets and $65.00 per 50 for the Cutting Edge Bullets 250gr "Maximus". Those are all specialty lathe turned bullets. It was $45.00 per 100 for the 250gr Sierra Gamekings. 260gr Accubond's (Which I really like) are around $40.00 per fifty. I'm going to keep checking the Nosler "Second page" and when they show up I can purchase them as "Seconds" or "Over runs" at half their retail price. _________________ The true eye sees not the despair of its victims, only the elegance of equilibrium. It's a demonstration of superior judgment. |
| Thu Dec 21, 2017 3:23 pm |
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Site Supporter  Location: RENTON Joined: Fri Mar 25, 2011 Posts: 20771 Real Name: John
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AR's really don't impress me much, but That AR is Just Bad MF'ing Ass.
  _________________ Mr. Q wrote: so basically, if you have to smoke some asshole, make sure they become fertilizer and then Bounce? got it. Guntrader wrote: Huh, maybe I was an asshole. NRA Member/RSO SAF 5 Year Donor GOA Member |
| Thu Dec 21, 2017 11:13 pm |
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Location: Central Washington(Wenatchee area). Joined: Tue Aug 16, 2011 Posts: 439 Real Name: Landon
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 _________________ The true eye sees not the despair of its victims, only the elegance of equilibrium. It's a demonstration of superior judgment. |
| Sun Dec 24, 2017 12:21 pm |
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Site Supporter  Location: Everett Joined: Mon Apr 22, 2013 Posts: 3421 Real Name: Ron
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That is sweet! Very impressive build. I'd like to see your groups once you get her out too.
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| Sun Dec 24, 2017 3:47 pm |
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Site Supporter  Location: Lake Stevens Joined: Mon Oct 31, 2011 Posts: 310
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I also have always wanted a 338 federal AR-10. I no longer have any reloading supplies, but this makes me want to get back into it!
_________________ "It is what it ain't" |
| Tue Dec 26, 2017 3:26 pm |
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Site Supporter  Location: The banana belt of MT Joined: Wed Dec 30, 2015 Posts: 8584 Real Name: Brian
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why don't I see images?
_________________ "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me."- Hunter S. Thompson |
| Wed Dec 27, 2017 2:30 pm |
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Site Admin Location: Renton, WA Joined: Sun Mar 13, 2011 Posts: 52031 Real Name: Steve
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sportsdad60 wrote: why don't I see images? Because Photobucket. Gotta stop using it, people. _________________ Steve Benefactor Life Member, National Rifle Association Life Member, Second Amendment Foundation Patriot & Life Member, Gun Owners of America Life Member, Citizens Committee for the Right to Keep and Bear Arms Legal Action Supporter, Firearms Policy Coalition Member, NAGR/NFGR Please support the organizations that support all of us. Leave it cleaner than you found it. |
| Wed Dec 27, 2017 2:48 pm |
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Site Supporter Location: The banana belt of MT Joined: Wed Dec 30, 2015 Posts: 8584 Real Name: Brian
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I can see photos now. Beautiful build, Landon!
_________________ "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me."- Hunter S. Thompson |
| Thu Dec 28, 2017 5:38 am |
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Site Supporter  Location: Everson, WA Joined: Sun Jan 6, 2013 Posts: 28177 Real Name: Ace Winky
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That is a sweet sweet AR.
Wow. What is the finished weight? _________________ Why does the Penguin in Batman sound like a duck? Because the eagle sounds like a hawk. |
| Thu Dec 28, 2017 8:28 am |
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Location: Central Washington(Wenatchee area). Joined: Tue Aug 16, 2011 Posts: 439 Real Name: Landon
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Well, well, well ... The damn thing shoots!
Loaded up 5 rounds with the Lehigh Defense 250gr Controlled Fracture bullets. Just to see if it would go bang and not come apart! This is the first 5 shot group at 100 yards. The cold/clean bore shot was out but the next four stacked up a hair over half inch.   The above 43.5 grain load was seriously compressed and I had a little more primer flow around the firing pin Strike that's I care for. So I backed it off half a grain to 43gr of 10X. I didn't make a scope adjustment and fired three at the 200 yard line for a three shot group @ .496. I'LL TAKE IT!! I'm going to load up a bunch on his evening, zero it at 200 yards and call it good. 200 yards.   From the target back to the bench.  _________________ The true eye sees not the despair of its victims, only the elegance of equilibrium. It's a demonstration of superior judgment. |
| Thu Dec 28, 2017 2:29 pm |
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Location: Central Washington(Wenatchee area). Joined: Tue Aug 16, 2011 Posts: 439 Real Name: Landon
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   _________________ The true eye sees not the despair of its victims, only the elegance of equilibrium. It's a demonstration of superior judgment. |
| Thu Dec 28, 2017 2:30 pm |
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