300 WSM Build

[@rogerdavis2056]

Just caught your video and im in love with that weapon, great job.

[@azreloader5968]

Thanks.

[@ricosroughnecks1223]

When I see that “big dogs” shirt, I know this man is a good dad hahaha. Takes his kids to Hilton head every year, has a margaritaville margarita maker, and uses any excuse to cook on the smoker. The shirt says it all.

[@azreloader5968]

Hahaha. Damn right! 😂

[@TimMayville]

Found 26.5" barrel, fluted. Magnum gas. Only issue, I think I will need an adjustable gas block. It's hurting brass, too much, too soon but, just this side of ejecting while still pushing so, the 2 ejector holes dig into the case base. lol Probably going to go with the Superlative Adjustable block and, I'm going to order that same hand guard you found; mines fine but, keymod. Oh, and widen the port, mines is ejecting but, will flip brass backwards ejecting.. Second shot Is mixed, might eject, might get caught sideways... I forgot about that when I was working on my 450 Marlin, which shares the lower and BCG with this beast... 🤣💪 Yes, 26.5" with a brake...it's loud...

[@azreloader5968]

Yea that gun with the break is loud. I forget to put my ears on and fired a shot and the noise hurt my ears so bad they were ringing for 2 days. I’ll never make that mistake again. Since I’m doing my load development, I have fine tuned my adjustable gas block, but most of my brass is ejecting forward. Which means it’s over gassed, but I’ll figure that out when it comes time. So far I’ve come across a load that I’m shooting just barely over 1” groups at 300 yards.

[@CarlosHernandez-vp2jn]

I build the same with a 24 in custom made fluted barrel , came at 7 1/2 pounds with out the scoup

[@12345678971926]

Thanks brother I’m gonna make one to

[@anthonygant5620]

I've been interested in this idea for some time . I saw this video awhile ago. I have not seen any "follow up" videos since. Did you run it and blow off some didgets.... what ? Would like to see more work and development with this cartridge in the AR platform. Let's go already.... 🤠

[@im2lost]

Looking to build something like this

[@laurenpetre90able]

Omg l would love one

[@jerryrichards8172]

I think the barrel is twisted flute.

[@azreloader5968]

Yes it is spiral fluted.

[@1deadpool11]

Nice unique rifle

[@azreloader5968]

Thanks! It’s a blast to shoot.

[@SerfsR-WE]

​@@azreloader5968how much did this one weigh in at??

[@azreloader5968]

17 pounds empty with the scope attached.

[@azreloader5968]

It was a blast to shoot. I dismantled it a few months ago because the barrel got fracture in it. I get am constantly getting into different cartridges, so I plan on doing a different build with the rifle.

[@Extaordignarly]

Hey there! Found your video and just want to say it's great as I am building effectively the same rifle. (Just waiting on the barrel.) Lots of great info that answers a lot of questions that I had. One question I do have for you though. Have you tried and or had any luck with longer magazines? I've tried a few different brands both polymer and metal. and after about 6 or 7 rounds in they jam up the follower and bulge the magazine.

[@azreloader5968]

Hello. Thanks for the complement. No I have not tried any longer magazines. I don’t intend to at least at this time.

[@azreloader5968]

@Rom vin the trigger is a Elftmann tactical ELF straight trigger.

[@jakek09]

Best solution ive found is 10 rd pmag downloaded to 5. Also on the inside just below the feed lids is a little nub, dremel that off. It keeps shell from fully engaging the feed lip. The rounds stay in there much more securely.

[@RollingRigTraction]

😂 good clean, self etching primer and Rust-Oleum camouflage paint, save your money with all the anodization nonsense which doesn't look even remotely natural in the woods. Yes thise stocks are heavy AF, just built a MKXII SPR clone with one and a 6.5 Grendel long range build with that stock, definitely CHONKY. I wouldn't mind building an AR10 and sorta like the idea of a .300 WSM although the 7.62x51mm NATO or the 6.5mm Creedmore would be the obvious option for ease of sourcing ammunition in an off situation. I have the old venerable .300 Win Mag bolt rifles but the short mag seems just as capable of not moreso.

[@azreloader5968]

What are you trying to loose your gun in the woods? 😂 Who cares what color it is. Whatever you hunt isn’t going to be tipped off by the color of your gun 🙄

[@JeffAcuff-c5e]

If you had to do it all over again what would you change or do different. I'm doing the same thing with 6.5 prc or 6.5 wsm . Is the barrel to long ? Or good

[@azreloader5968]

I would not do it in 300 wsm and I wouldn’t do a Bull barrel. Don’t get me wrong, I love it, I just wish I would have searched it more. I’m not getting the accuracy out of it like I wanted. It is accurate, but not bolt action accurate. My expectations were to high and to an extent probably unrealistic for a rifle in the AR platform. I probably would have done the build in a smaller cartridge like 6 creedmoor or 6.5 creedmoor. The amount of money I put in it, I could have built or bought a good bolt action rifle chambered in 300 wsm. Again it’s fun as heck to shoot. I get a lot of people that are in awe of it and want to shoot it when I’m at the range. So that awesome.

[@JeffAcuff-c5e]

I have one in 6.5 creedmoor and 308 super accurate one wilson combat barrel and one a faxon .. Do you think the accuracy is bad because of deadshot barrels ? They have no guarantee or return policy there not know for super accurate stuff . But that doesn't mean there barrels aren't. I know you can get very good accuracy out of an ar 10 , I'm just not sold on deadshot . That's my question. Just FYI of you had a creedmoor or 308 you would want a wsm we always want what we don't have lol !

[@JeffAcuff-c5e]

Wanna do a 20 inch 6.5 wsm short barrel blowing away a 26 inch creedmoor by 250 fps.

[@azreloader5968]

So the barrel is a green mountain barrel. It’s accurate, sub moa. My expectations were just higher than what they should’ve been. It shoots 2-1/4” groups at 500 yards with one load I worked up. For whatever reason I wanted 1/4 moa 😂 that’s what I’m getting out of old 30-06 bolt action

[@EMfanatiks]

how much filing did you do on the mag feed lips? any bending? trying to figure out mag modifications myself but dont know how much to file

[@azreloader5968]

I didn’t have to file to much. You’ll have to keep filing until it feeds right. The opening between the feed lips is about 25 thousands bigger than the brass case.

[@EMfanatiks]

@@azreloader5968 ill just use the calipers to measure 25 thousandths more than the brass width and try. i have one of the same exact mag and my 20rd steel dpms mags are junk even with 308. thanks

[@Lure-Benson]

I build and sell AR 10 uppers in WSM cartridges with the current one is in 375-300WSM which I use Pac Nor super match barrels - KAK WSM bolts and any brand of AR 10 bolt carriers work KAK does sell AR 10 uppers for WSM cartridge builds. I went to using the 18.5 inch gas tube to stop the early opening of the bolt and it stopped the smoked residue on the casings and stopped sometime fire from the opening the both on firing when even the adjustable gas block is tuned correctly. Firing WSM cartridges in the AR 10 is to much flame from unburnt powder to use shorter gas tubes. No problems for me with steel magazines using AR Stoner 20 round mags

[@renaissanceman7145]

I'm interested in building a WSM upper myself (I already have a Mo 70 switch barrel in 300 WSM - factory barrel - and 7mm WSM -Douglas XX premium) for either DPMS or (my preference would be) Armalite platform. I know the overlords hate links in the comments but could you maybe come up with a cryptic and temporary way to insert a way to find you?

[@Lure-Benson]

@@renaissanceman7145 There isn't any AR 10 bolts made for the Stoner system in WSM magnums. It took me 8 years for the start of sales of my AR 10 uppers in WSM magnums to find the bolts. Thanks for asking and I am an easy person to ask questions from to pass on the how to do something to people not an asshole.

[@Lure-Benson]

@@renaissanceman7145 I have remembered another importance I learned building AR10 uppers with these magnums is to use a White Oak 18.5 inch gas tube to delay bolt opening stopping smoke and sometimes fire coming from a bolt opening under pressure. Just look up white oak gas tubes then look for the 18.5 inch ones. If you get black smoke residue on the fired cases the bolt is opening under pressure, and you don't want that so change the timing of the bolt opening with the longer 18.5 gas tube.

[@renaissanceman7145]

@@Lure-Benson thanks for the replies! I've found a lot of valuable information on the web but there's no substitute for experience. I have a Bridgeport mill and a Jet 1340T lathe so I have the necessary machinery for the job. I don't have the experience. Where safety is involved I have always paid someone with the proper experience. But, I should probably work toward gaining the necessary experience rather than working toward saving up enough money to pay someone.(?)

[@brrrt7623]

How many rounds do you get in the stoner mags?

[@TimMayville]

I'm still looking for a barrel, any pointers on where a good barrel is? around 24"...

[@azreloader5968]

Unfortunately I can’t help you with that. I know manufacturers are having a hard time acquiring barrel blanks.

[@daniel0130]

How does it do with the brass? Is it reusable or does it chew it up pretty bad?

[@azreloader5968]

All the brass is reusable. You might have a little ding on it from ejection, but it still works for reloads.

[@timmcfarland3311]

I am very interested in doing this build I was wondering 300 prc or WSM and I like the WSM case better. Weight doesn’t bother me the heavier the better. My .308 bolt gun weighs 26lbs

[@timmcfarland3311]

I forgot to ask. Is that or do they offer a long action upper? Just so you can load the long high BC bullets

[@azreloader5968]

You can’t do 300 prc in an AR10 platform because the length of the cartridge is way to long. You’d have to do a bolt action gun.

[@timmcfarland3311]

@@azreloader5968 They make them in 300 win mag 300 Norma and 338 lapua but Must be a total custom job then and that’s why they are $5k each

[@karlcockrum8684]

Hello, I built almost the same 300WSM as yours, and I'm having magazine feeding issues. Could you give me a break down of the mag modification?

[@azreloader5968]

Did you use a metal magazine? Mine are made by ASC if I remember correctly. I cut about a half inch off of the plastic limiter that is in the magazine and I cut two coils off the spring. I can fit four rounds in the modified mag.

[@karlcockrum2458]

I have the same brand of metal magazines that you have

[@azreloader5968]

I forgot to mention that I did have to file down the feed lips a little on the magazine.

[@12345678971926]

I wonder can you make me a custom barrel that’s 1/2 twist

[@andrewharp2233]

What mags will run the 300 wsm

[@azreloader5968]

Saying you’ll have to modify the feed lips on the magazine, any metal magazine for 308 Winchester will work. The magazines I bought are ASC magazines.

[@andrewharp2233]

Whats your OAL on your reloads?

[@douglasgrissom8643]

I have tried to get a hold of dead shots and I can’t get anyone to contact me, how did you get a hold of them?

[@azreloader5968]

Try under the “contact” tab on his website. That’s how I was able to get ahold of him. It took a few attempts.

[@christianwade1344]

What did you use to file the upper to make it so flat? Just a standard file?

[@azreloader5968]

First I used a course file then once I thought the opening was big enough I used a finishing file to make it smooth.

[@user-oe7jh1ee4o]

What Oz buffer and spring did you ues ?

[@azreloader5968]

I used the standard rifle buffer tube from Aero.

[@Lure-Benson]

@@azreloader5968My AR 10 I have done in 375 -300 WSM so I went to a longer 7 position buffer tube and a 5.3 weight buffer to tune down the hammer effects of shooting this dangerous game AR.

[@hunterjager9538]

How does it feed?

[@azreloader5968]

It feeds great! No issues at all.

[@hunterjager9538]

@azreloader5968 do you know what your oal is on your hand loads? Im thinking they barely fit in the mag. I'm thinking about doing one of these in 325 wsm ( 8mm ).

[@azreloader5968]

@@hunterjager9538 my 168gr A-Max load is my longest at 2.840”. I’d say as long as you stay with a max C.O.L. of 2.860” you should be fine.

[@Mase326]

She a hefty gurl

[@ComeInBlueOver]

is that a standard aero ar10 upper?

[@azreloader5968]

Yes it is.

[@ComeInBlueOver]

@@azreloader5968 have you come into any headaches or problems with this yet? such as ejector fractures or breaks? im currently building a ar 10 and want more speed than a 308 but more umph than a 6.5.

[@azreloader5968]

@@ComeInBlueOver I have not had any issues as of yet. I’ve got about 468 rounds through it and have not had any issues so far. I have a load worked up in a 168gr Nosler accubond long range bullet that is flying at an average of 3,217fps.

[@ComeInBlueOver]

Did you have to file the upper any? Or have any ejection problems

[@ComeInBlueOver]

@@azreloader5968 how much did you end up having to file off? did you file top and bottom?

[@MorrisOutdoors98]

Rattlecanning is superior

[@azreloader5968]

I’ve thought about, but it’s hard when you’ve got so much money wrapped up into one rifle 🤷‍♂️

[@norrisdillahuntjr4570]

Me to

[@norrisdillahuntjr4570]

17lbs damn

[@TimMayville]

🤣 Barely even bucks when it goes off...lol

[@JessieWallace-n5w]

What did you use for a magazine?

[@azreloader5968]

ASC mags.