20” steel 300WSM barrel weight & profile question

KYAggie

KYAggie

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    • Oct 2, 2014
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    Kentucky
    #1
    Details:

    I have a Origin short action and a Peak44 Bastion stock that’s channeled for Remington Mag Sporter profile barrels which will not fit carbon barrels. So overall my goal is a 20” 300WSM steel barrel threaded to 5/8x24 that’s as light as possible that still makes a good suppressor host, and fits in my Peak44 stock. I’m hoping for 2.5# or less in barrel weight, so I may have to flute it, and or have the barrel profiled back out at the muzzle to be able to thread it 5/8x24. This is going to be a hunting rifle, not a range toy.

    What profile would you pick for such a project? Flutes, or no flutes? Flare at the muzzle for threads or not needed?

    If you have such a barrel, do you know what it weighs? How do you like?

    I know, I know, the carbon barrels are all the rage and the easy button, but they are expensive, I would have to buy a different stock, and they are really not that light at around 3# for a 20”.

    Here’s what I’m working with stock clearance wise:

    IMG_2315.jpeg
     
    #2
    The preferred barrel blanks .750 taper less contour is probably the lightest you can go and still thread it 5/8-24. It should be a little under 3lbs fluted. I don’t think the 8oz extra barrel weight would matter though. Especially shooting a wsm and trying to spot your own impacts
     
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    #3
    wpeach1912 said:
    The preferred barrel blanks .750 taper less contour is probably the lightest you can go and still thread it 5/8-24. It should be a little under 3lbs fluted. I don’t think the 8oz extra barrel weight would matter though. Especially shooting a wsm and trying to spot your own impacts
    Click to expand...
    I hear you, but at over 7500’ scrambling around looking for elk, every single oz matters. I might be trying to optimize for dissimilar things that can not be optimized at the same time. I know I can get a very light steel barrel that would work great with a break, but not a suppressor. I know I can get what seems like a not too heavy barrel that’s great with a suppressor, but a little bit much to lug around in the mountains. I know, work out more, but it really comes down to the oz in hand when solo backpack elk hunting. My current unsupressed set up, which works great for me, is 8.64# scoped and loaded in 300 win mag, it’s a Blaser R93.

    Calculations:
    Origin with Trigger Tech - 33 oz
    Peak44 Bastion with bottom metal - 25.3 oz
    Scope Leupold VXiii 4.5-14x40 - 13 oz (Laugh all you want it has a Stoney Point turret and has been reliable for years)
    4 loaded rounds - 4 oz

    This leaves 63 oz for barrel, rings, suppressor

    Banish 7” - 11.3 oz
    ARC rings - 7 oz

    This leaves 44.8 oz or 2.8# for the barrel unless I get lighter rings, but still it’s close. So in reality, any barrel less than 2.8# would work to equal my current set up. I’m trying to see if it’s possible without a carbon barrel.


    Current set up:

    IMG_5293.jpeg
     
    #4
    www.snipershide.com

    6.5CM Bartlein 3B 20" barrel weight?

    Anybody have a Bartlein 3B chambered in 6.5mm CM ideally that they've had on a scale (fluted or unfluted is fine, just mention if it is, same if it's another cartridge) at 20" finished? I'm working on another build and trying to get a working number from a finished barrel. I'm sticking to steel...
    www.snipershide.com www.snipershide.com

    3b fluted isn't off much from what you are looking for, #3 may be able to be threaded at 20".
     
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    #11
    KYAggie said:
    Nice!! So I’m not crazy, it is possible to get a lighter than carbon barrel that’s still a good suppressor host. Did PVA do that barrel for you and if so is it an Osprey blank? How does it shoot?
    Click to expand...

    PVA can do that and they are Osprey barrels. I have 3 Osprey barrels and a 4th on the way and they all shoot great. I am sure @bohem will make exactly what you want and make you smile when you get it and shoot it.
     
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    #12
    Rob01 said:
    PVA can do that and they are Osprey barrels. I have 3 Osprey barrels and a 4th on the way and they all shoot great. I am sure @bohem will make exactly what you want and make you smile when you get it and shoot it.
    Click to expand...

    Good to know. I have two of their barrels, one Rock Creek and one Wilson and both shoot great, although neither lightweight. Are any of yours fluted and if so are they straight or twist?

    I believe the Osprey’s are button rifled and I’m really wanting to try a cut barrel for this project, but I’m sure Josh sells Bartlein, Brux, and probably Krieger. I’ll check. It would come down to getting the right profile.
     
    #13
    KYAggie said:
    Good to know. I have two of their barrels, one Rock Creek and one Wilson and both shoot great, although neither lightweight. Are any of yours fluted and if so are they straight or twist?

    I believe the Osprey’s are button rifled and I’m really wanting to try a cut barrel for this project, but I’m sure Josh sells Bartlein, Brux, and probably Krieger. I’ll check. It would come down to getting the right profile.
    Click to expand...

    My 6mm ARC barrel has spiral flutes as I got it right when they were starting to get offered. It’s done really nice. Pic below. It’s a Proof Comp contour barrel.

    As for button versus cut, I have had both and still do and the PVA Ospreys are as accurate and easy to clean as any cut rifled barrel I have had. Including two of the three you mentioned. It’s your money so get what you want but if you did go Osprey you wouldn’t regret it.

    IMG_4634.jpeg
     
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    #14
    Rob01 said:
    My 6mm ARC barrel has spiral flutes as I got it right when they were starting to get offered. It’s done really nice. Pic below. It’s a Proof Comp contour barrel.

    As for button versus cut, I have had both and still do and the PVA Ospreys are as accurate and easy to clean as any cut rifled barrel I have had. Including two of the three you mentioned. It’s your money so get what you want but if you did go Osprey you wouldn’t regret it.

    View attachment 8607447
    Click to expand...


    Do you remember what that barrel weighs? Very nice looking flutes.

    The reason I want to give a cut barrel a try is because I’m trying to use a lighter profile. I have no complaints with my button barrels he has done for me, but the lightest profile I have is medium Palma. This is copied from Bartlein’s website, and we all Frank knows his business.

    “Why is single point cut rifling better than button rifling?
    A lighter weight contour when the barrel gets button rifled (Bartlein Barrels only does single point cut rifling) the stress being put into the blank is much greater. As you turn the contour smaller and smaller in size this can have a negative effect on the bore sizes changing and opening up. When this happens you cannot make the bore size smaller. This is not an issue with single point cut rifling. We don’t see this happening at all. Same can be said about threading the muzzle of the barrel for a muzzle brake or suppressor attachment. On button rifled barrels, threading the muzzle this is a common problem with the bore opening up. The last place you want the bore to open up or go sour on you is right at the muzzle's crown edge. Anything going wrong here has a negative impact on accuracy.”
     
    #15
    KYAggie said:
    Do you remember what that barrel weighs? Very nice looking flutes.

    The reason I want to give a cut barrel a try is because I’m trying to use a lighter profile. I have no complaints with my button barrels he has done for me, but the lightest profile I have is medium Palma. This is copied from Bartlein’s website, and we all Frank knows his business.

    “Why is single point cut rifling better than button rifling?
    A lighter weight contour when the barrel gets button rifled (Bartlein Barrels only does single point cut rifling) the stress being put into the blank is much greater. As you turn the contour smaller and smaller in size this can have a negative effect on the bore sizes changing and opening up. When this happens you cannot make the bore size smaller. This is not an issue with single point cut rifling. We don’t see this happening at all. Same can be said about threading the muzzle of the barrel for a muzzle brake or suppressor attachment. On button rifled barrels, threading the muzzle this is a common problem with the bore opening up. The last place you want the bore to open up or go sour on you is right at the muzzle's crown edge. Anything going wrong here has a negative impact on accuracy.”
    Click to expand...

    No don’t remember but it’s a heavy profile anyways so wasn’t worrying about weight. Lol

    Ask Josh about that. The barrel in the pic above is one of his so I don’t think he is worried about stresses with his barrels but he can speak better to the subject.
     
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