troy fairweather
Member
I've always wanted a ar-10 in 7-08 be prefect for about anything, something on the 284 case would be cool but not probably worn it since the mag length is limited. One in 458American would be cool.
AR-10 build thoughts: .358 win or .45 raptor
- Thread starter MISportsman
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@troy fairweather
Have you looked at the 7mm Valkyrie? You get about the same performance but it's in an AR-15 package.
Have you looked at the 7mm Valkyrie? You get about the same performance but it's in an AR-15 package.
troy fairweather
Member
I have thought about doing one, would be a bit pricy and don't know if I'd go longer then 20" in a lighter contour for hunting. New York not making it easy either.
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MISportsman
Member
After a bit of research I'm going to change 45 raptor to .450 marlin. I can get complete bcg from kak for it and it's performance is better. So it's between the .358 win, .350 rem mag, and the .450 marlin
I don't think the 350 offers enough over the 358 to even take the chance of dealing with feeding belted cartridges thru an AR, the 358 should run like butter in 20 round mags if you want.
The 450 is another matter that could be interesting, heck it's your headache and $$$ so my vote is 450 lol. Keep us posted
The 450 is another matter that could be interesting, heck it's your headache and $$$ so my vote is 450 lol. Keep us posted
gunmechanic
Member
I would go 450 marlin!
adcoch1
Member
Can you even get 450 Marlin brass anymore? If the 45 raptor is off the table, go 358 win. Proven track record in short barrels and in AR-10 pattern rifles.
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MISportsman
Member
If I had the extra cash I would just build a upper in each of the two and one lower for them to share.
adcoch1
Member
That's the right answer. I am curious if a belted mag would be able to feed in an ar10
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MISportsman
Member
Nemo arms made a .300 win mag ar type rifle
Demi-human
maybe likes firearms a little bit…
I’d stick with the original plan.
45 Raptor.
460 S&W Magnum dies and a .308 shell holder and you’re in business. It was $458 for my mocked up McGowan barrel.
Any BCG and .308 bolt will work. I’d stick with Aero.
Many bullets available that will work at that speed.
Man, I’m talking myself into one!
McGowan will make a magnum barrel for a LFAR, only if the customer provides the barrel extension. Wonder why that is?
45 Raptor.
460 S&W Magnum dies and a .308 shell holder and you’re in business. It was $458 for my mocked up McGowan barrel.
Any BCG and .308 bolt will work. I’d stick with Aero.
Many bullets available that will work at that speed.
Man, I’m talking myself into one!
McGowan will make a magnum barrel for a LFAR, only if the customer provides the barrel extension. Wonder why that is?
The Raptor is just so short, seems like a miss opportunity to me.
I'd still like to see a 284 based cartridge about 2 or 2.1 case length with a .458 bullet.
You'd basically have a 450 Marlin that would run like poop thru a goose in a LFAR
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MISportsman
Member
I would have thought that there would have been a bit more available for medium and big bore AR-10 thumpers out there, but I guess it hasn't caught on in the AR-10 like it did in the AR-15. When I first looked at the .45 raptor it looked to be my answer, but it really doesn't seem to offer much over my .450 bushmaster and still uses the
452 bullet instead of the.458. it is a bit harder than I thought to get magnum big bore power out of the AR-10. The .350 rem mag or the .450 marlin would both fit the bill perfectly, but there is almost no factory ammunition or even brass available for either. With that being so the .358 win is looking better and better.
452 bullet instead of the.458. it is a bit harder than I thought to get magnum big bore power out of the AR-10. The .350 rem mag or the .450 marlin would both fit the bill perfectly, but there is almost no factory ammunition or even brass available for either. With that being so the .358 win is looking better and better.
JeeperCreeper
Member
450 marlin!
That's because for the most part a 308 with the right bullet is more than adequate for deer, boar and the smaller bears. Big bears and moose are seen as a bigger step up and as much as I was a 358 fan when I was a teen I recognize that it's really not much of a step up from a 308 with modern bullets.
I hate having extra AR parts laying around as I try to find a gap to fill and I don't have much in the way of gaps lol.
rbernie
Contributing Member
I built a couple of 358 Win AR10s, but I would probably reach for the 450 Bushmaster AR15 first for any outing in which the 358 Win might be a contender.
DukeConnor
Member
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I would have stuck with the 308
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MISportsman
Member
Just to put out there for the devil's advocate and to further complicate things LOL there are two more cartridges I was toying with for the build. They would be the 338 RCM and the 325 wsm. Any thoughts on either one of those? And what are the odds of ammunition continuing to be available for both of those?
gralewaj
Member
I've been a fan of .35 cal rifles for 30+ years. The .358 Win should run fantastic in an AR-10 platform. The extra recoil of a .350RM is unnecessary to deal with in that style rifle.
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MISportsman
Member
Partly due to availability of ammo and reloading components and partly due to the fact that it will sufficiently fit the bill! Now my question is to barrel length. My original plan was 20". Wilson combat is having a black Friday sale on all of their barrels, but they only offer a 16". Would I loose a lot going down to the 16" or will it not make that much difference with the .358 win?
358 with heavier bullets will lose less than a 308. IMHO if I was doing this I'd actually prefer the 16".
Matter of fact I'm part of the reason the 16" 308 Recon is now out of stock lol.
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MISportsman
Member
I was just about to order the Wilson combat .358 win barrel and noticed that it has a 1:14 twist rate. I have read that to stabilize bullets in the 220+ grain range it has to be 1:12. It that is the case maybe I should go a different route then the Wilson combat
Are you planning on shooting subsonics? I ran the numbers in streloc on the 250 Swift A frame and the 225 TSX both were in the 2+ stabilization range with a 1:14 and 2200fps.
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MISportsman
Member
No, nothing subsonic. Just that exact load, and 225 gr hotcores. It sounds like what I read may be incorrect. It was just on another forum.
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