Yay! They're finally making it.

Discussion in 'Mossberg MVP Rifle General Discussion' started by spamassassin, Dec 2, 2016.

  1. spamassassin Well-Known Member

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    I guess I harangued Black Hole Weaponry (now Columbia River Arms) enough and they've capitulated and put my barrel in the queue, it's paid for and there's no turning back. I had been going to do a 6x45 but I also still have other .223's laying about that people other than me tend to shoot and as I've come to find out before having both in the same house in that situation is a bigger risk than I want to deal with. So, .223 it is.

    26" finished length, 1:7 twist, black cerakote, threaded muzzle, untapered.

    I'm looking at stout charges of N550 or BL-C(2) under 75 grain ELD-M's. So, begin the 10 week wait. Now I need to run off and buy the PTG barrel nut.

    I'm going to take that course record for .223 next year.
  2. Keith Moderator

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    Isn't 26" a bit long for a .223 or is the length necessary due to the charges you plan on running? I ask because I thought either 22" or 24" was considered optimum for that cartridge.

    EDIT: And congrats on getting the barrel made. Any idea on why the name change? Did they get bought out?
  3. spamassassin Well-Known Member

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    Yeah, CR bought them as I understand but that just puts more resources behind them and broadens their channel market.

    You won't see 26's much outside extreme varminting and F-class but they're out there, actually then they grow to as much as 28" or more. When you want to shoot the heavies, 80's and 90's, you need as much barrel as you can get so you can load up slow burning high density powders like N550 and eeek out every last FPS. The load I'm looking at for these is 28 grains of N550 under a 75gn pill. Should come out right around 3000fps. The extra couple inches doesn't add much but I want my 3K fps. That's all dependent on the chamber coming out right for running them on the long side.
    Fritz373 and Keith like this.
  4. GrocMax Active Member

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    LOL 26" is my minimum it seems. Friggin' 'carbine' shooters...............;)
    Fritz373 likes this.
  5. wood chucker Moderator

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    Loll.
    When I was a kid the arguments ran hot as to whether 22 inch barrels were carbine or rifle.
    It made sense that 22 inch was carbine because all the rifles on the dealers racks and all the milsurp rifles had 24 inch barrels as the standard and sometimes longer.
    It also made sense that 22 inch was rifle because all .30-30 carbines had 20 inches of barrel and milsurp carbines had less.
  6. spamassassin Well-Known Member

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    Well, that was sick fast. My barrel should be here tomorrow. That's 1 month and 1 week on a normally 8 week order. It's a 7 twist instead of an 8 but that's no loss for me really, didn't plan on shooting of slugs heavier than 75gn except maybe as an experiment. PTG barrel nut is on the way too. Looks like I'll probably be able to make the first match of the year with the new setup.

    On the other side, I blew up the intercooler on my car a couple weeks ago. 175K miles on a turbo car that I flog unrepentantly so not bad there. Decided to replace the turbo at the same time since the stock one was never intended to go much beyond 120K miles. In the process there were a pair of o-rings and a gasket that the mechanic needed so they ordered them. Turned out they're coming from Reno. Shit. I80 from Reno to Truckee is closed due to a blizzard meaning my parts might not make it until spring if things keep going the way they have been with the weather. So yay. One up, one down.
  7. spamassassin Well-Known Member

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    It's here and it's a 7 twist. The shipping label I got email'd said 8 but it came with 1x7 noted on the barrel itself so yay. I can shoot up to 90 grain pills now.

    I also finally got my damned car back. 1800 bucks in labor but new turbo, intercooler, air filter, MAF sensor, thermostat, and all kinds of gaskets and o-rings. It's fast like it was when it was new. Bigger intercooler means there's more air stored up when I go from hammer down to off the gas so the blow off is much louder now. Boost takes no more time to spool up though.
    Keith and wood chucker like this.
  8. wood chucker Moderator

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    Hybrid turbo will fix that lag :D :cool:


    7 twist and 90 grainers...woo hoo !!! Can't wait for the pics:)
  9. spamassassin Well-Known Member

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    Just ordered an A2 flash hider and crush washer. Trying to find my pipe wrench so I can jerk that old barrel off there. The new one follows the same taper but has no flutes. Never liked fluting.
    wood chucker likes this.
  10. boostless Active Member

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    And the pics...?
  11. spamassassin Well-Known Member

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    Coming soon. Have to get done answering emails from work before I scan bugger off the rest of the day on my own muddles.
  12. wood chucker Moderator

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    I have a gorilla special MVP barrel nut wrench you can borrow if you like.
  13. spamassassin Well-Known Member

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    Pics as promised along with pics of my reloading bench cluttered with .223 stuff and 7BR stuff during a changeover.

    Black shot peened finish (pretty certain that's cerakote) with bronze label. 7 twist, stainless, 3-land Caudle polygonal, 5.56 NATO chamber (longer leade than .223rem) at 26" and heavy.
    [IMG]

    Reloading bench in mid-changeover from 7BR to .223.
    [IMG]

    1/2x28 muzzle threading along with some CCI SRP's and some Hornady 75gn HPBT's
    [IMG]

    Tenon threads over Berger 70gn VLD.
    [IMG]
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  14. boostless Active Member

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    Looks pretty good, the Blackhole Weaponry barrel I had shot good with match type ammo but I got rid of it since I just wanted to plink with it and it shot cheap ammo horribly.
  15. spamassassin Well-Known Member

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    What did you have it on? An AR or bolt gun.

    From what I know of I'm the only guy so far to get a pre-fit drop-in barrel with barrel nut on an MVP .223. All the other barrel companies I called would only do a blank. Chucker offered me a barrel nut wrench for the factory MVP nut so I'll wait to take my rifle apart till that gets here. Still waiting for my barrel nut and a few other bits and bobs. Today I need to add a quarter to half inch of additional lift on my cheek riser. The Razor II scope is a good bit higher off the mounting base than the ST-10 or 16x42SS. Cheek weld isn't that solid. Going to take some kydex I've had laying around and make an adjustable cap to fit over my 3/4" tall Magpul MOE cheek riser for my MVP and another that goes 1/2-1 inch for my Savage 10FPSR.
  16. boostless Active Member

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    It was on a 308AR
  17. GrocMax Active Member

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    I gots one in 223AI its fer sale. Also have another 20 cal on order unchambered.
  18. spamassassin Well-Known Member

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    Specs on that 223AI?

    <Unending stream of foul language>

    So my barrel nut showed up and I thought, wow, that looks really small. Turns out the drawing we've been circulating around here is incorrect. It's got a .875" (22.2mm) major diameter on the threads but the .223 MVP has a .838" (21.3mm) major diameter. Yup I'm screwed. So, I've sent that info off to Black Hole/Columbia River and my local smith has agreed to take a break from making ultra precision ground thickness gauges (accurate to +/-.00001" thickness) for an aerospace manufacturer to set up my barrel for me so I can start my match season on time. F*ck F*ck F*ck F*ck. You know what I mean? To top things off I ordered and received an A2 birdcage for the new barrel and literally the moment I removed it from the package I looked over in a box of brass and found the one I'd misplaced sometime back.

    On the upside the PTG barrel nut is spanky nice and I checked my factory recoil lug and it's as flat as they come. Not stamped by the looks of it. So I'm about to run off to Fremont and pick up my barrels from my coach who was trying to get one of our normal silhouette smiths to do the barrel and blueprint the action while it's all apart.

    If someone can post an accurate machinist drawing for .223 mvp barrel tenons I'd appreciate the hell out of it so I can send it to black hole and correct their files.

    </language>

    So, I'm in a foul mood and now I have to drop a few hundred bucks on more gunsmithing work.
  19. GrocMax Active Member

    Member Since:
    Jun 12, 2014
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    Had mine cut to the 7/8x28 UN 2A standard off the aforementioned print and it fit perfect. Just threaded chambered crowned and installed the 223AI Savage barrel last night, this afternoon I'll take apart the MVP and measure. I recall verifying the original barrel and it was within the specs below for major diameter.

    You may be OK take a look at this-

    http://www.efunda.com/designstandards/screws/unified.cfm?start=148&finish=227

    It may just need some sandpapering the tops off or general deburring, they may not have a thread gauge for that oddball thread.
  20. GrocMax Active Member

    Member Since:
    Jun 12, 2014
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    OK my barrel is .870" major (OD), PTG nut is .828" minor (ID), receiver is .832" minor (ID). Its 7/8x28 2A/2B.

    PTG nut threads are too sharp on the crest, I'd buff the tops off the nut and barrel, they may not have used a fully sharp tiny tip radius bit to cut the barrel threads so there's a big radius at the root if your measurements are close to the above. The important part is the pitch diameter its probably close to correct. If you have some 800-1200 grit lapping compound you can correct a pitch diameter interference pretty quickly.

    The 223AI is a 10t 6 groove 24" straight taper to .750" at muzzle, Varmint stock needs the forend channel enlarged.

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