Very easy conversion--very easy neck-up from 308 cases--cycles very well in an AR 10 platform.I think I will take one of my AR-10's and have it done up. Might even start another thread about it.
Good question--I haven't noticed any issues with DPMS, PMag or Brownells 308 mags--IMO, oddly enough, the fatter neck and bullets seems to aid in getting from mag into chamber with less drag/angle issues while passing along ramp/extension than a smaller calber. I base this opinion on almost complete lack of case deformation upon ejection. No FTF's as of yet. Maybe I'm just lucky with this one (my other AR builds almost always require some kind of "tweaking").Stag, when you make up a 358 on an AR10 size rifle do you still use standard 308 mags?
The front rib inside the mags was supposed to brace the shoulder of the shells and in theory. It would ride at the juncture of the neck and shoulder.
Because the neck is wider I am wondering if the rounds clear the rib and stack in the magazine correctly.
Can you enlighten me?
Are there some mags that should be avoided and others that work OK?
Yup--my experience as well (though I haven't worked on as many xx10 platforms as you). Depending on how the cartridge stacks in the mag and how it is "presented" by the bolt I think determines how well it reliably feeds. When you do a "slow feed" of a cartridge you can see how the cartridge rides the ramp and past the extension lugs. The 6.5 Creedmoor I recently built was especially demanding--what I found was sharp ogive/high BC bullets that are seated long near the OAL limits of the mag sometimes have issues of not being lifted enough by the shoulder to make their way through the lugs without getting a bit damaged--even sometimes jamming into the chamber face without going into the chamber itself. I eventually noticed even Hornady's very good factory GMX ammo is seated significantly shorter than the max AR10 OAL capacity for the cartridge--and when I seated bullets shorter the problems went away (and a slight change in the magazine lip angles--Brownell's lip tool and mags are excellent for working with these kinds of issues)In my experience with "Stoner system" AR 10 size rifles, the larger the bore the easier it is to get them to function, but the potential with magazine problems has held be back from doing very many. I have worked on quit a number of ARs in 243, 260 7-08 and 308. I also have a bit of experience with the 338 Fed, but not much so far. By far, the most problematic have been the 243s and the 260 can also fight their own function quite a lot.
Even at 300 yds that 358 win can be moving along at 1800+fps and over 1700 ftlbs of energy--nothing to sneeze at.A BLR in 358 Win shooting 225g A-Frames is one helluva caliber for bears, moose and hunting elk in the black timber in my opinion. Not a deer Sendero rifle or one for watching for an elk to cross a meadow where shots could be in excess of 300 yards
Sure why not.358 Winchester, Why Not?
You're comparing a typically short-action cartridge to a typically long action one.I just don't think that anyone likes 35 caliber. A .358 caliber loaded down to match the .220 .308 will not be as good a load as a 30-06 in any particular way. Less penetration, rounder trajectory, etc.Both BC and SD are inferior.
Its just that .358 calibers are less than 44 calibers, and less than magnum calibers, and offer little real advantage over .30 calibers (in the mind of the average shooter.) You have the .358, .35 whelen, and even .35 remington, and I don't believe that any of them are within the top fifty most popular cartridges.
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