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.338 ARSM first shots

5024 Views 16 Replies 9 Participants Last post by Cold, Dec 8, 2008

constructor

Discussion Starter · Oct 26, 2008

I finished up an 18" barreled .338 ARSM(AR short mag.) and stopped by the range for the first shots this afternoon.
I had loaded up Sierra 215gr SBT with 335, 3031 and 322 so I shot those through the chronograph and it really hit close to what Quickload had predicted. H335 was the fastest at 2484fps and NO signs of pressure.
The Sierras have a BC of .477 and were as accurate as I remember, 1 big hole at 50yards since I was just getting on paper and checking velocity.
The Barnes TSX has a BC of .437 I believe and should break 2600 easily so they should be a hog stopper like no other.
The upper was built using Olympic parts and that makes it kind of expensive compared to most uppers I can build.
I'll try some more loads this week after I get caught up on orders.
The 6.5ARSM is next and may be built on the new platform.

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marinesg1012

· #2 · Oct 26, 2008

Very exciting stuff, it sucks it is all for handloaders but still it is fun to hear about new rounds for the AR

Test_User

· #3 · Oct 27, 2008

The only thing that sucks is that you haven't started hand loading yet. :lol: :lol: :lol: :mrgreen:

I will have one of these for sure.

Offers more energy then even any of th big bore ARs and still has above the recommended min for even Bull Elk at 500 yards. Is an exact ballistic duplicate of the .338 Federal but in a AR15 package. Can you imagine what a flat shooter the 6.5 will be or the ultimate thumper if he went to a .458 with 68 gr H20 capacity and will handle 65K PSIs :shock: Oh I'm starting to tingle all over.

marinesg1012

· #4 · Oct 27, 2008

Tim_W said:
The only thing that sucks is that you haven't started hand loading yet. :lol: :lol: :lol: :mrgreen:

Yup this winter is going to be a reloading outfitting going on... you best get ready to answer some questions

Test_User

· #5 · Oct 27, 2008

bring it :wink: :twisted:

DDriller

· #6 · Oct 27, 2008

Looks like you have another super round. If I ever get my 6.8 together I will have to have one of these also. Are you using Win brass? I just noticed Graf & Sons have Federal brass in 242WSSM for $234/1000. Win brass $493/1000.

marinesg1012

· #7 · Oct 27, 2008

Tim_W said:
bring it :wink: :twisted:

Not that I have been shy asking yet, or that you have been shy in answering

hdglock

· #8 · Oct 28, 2008

Is this in an AR15 or AR10 lower? Then again it probably won't matter much as I have an AR10 stripped lower That I will eventually build anyways. I just have started getting parts together for my first build, I can't wait for the xtreme upper to come out for my second 6.8 and now this. I think I might have to get another couple of jobs to help pay for all this :lol:

constructor

Discussion Starter · #9 · Oct 28, 2008

hdglock said:
Is this in an AR15 or AR10 lower? Then again it probably won't matter much as I have an AR10 stripped lower That I will eventually build anyways. I just have started getting parts together for my first build, I can't wait for the xtreme upper to come out for my second 6.8 and now this. I think I might have to get another couple of jobs to help pay for all this :lol:

NS, the BRD has that effect on many. LOL
These are on a AR15 lower, one rifle is a standard AR15 upper with modification and the other is a new design upper on a AR15 lower.
I was able to shoot a few after testing the 6.8s that I need to ship.
The .338 ARSM 215 Sierra hit 2554fps out of the 18" barrel, the 200gr should reach 2600fps in a 18" and 2650fps from a 20".
The 6.5 ARSM 120gr hit 2956fps from a 22" barrel with the new design upper on a AR15 lower.
I think I found a few new hunting rifles for next year.

ETA- The .338 ARSM actually beats the .338 Federal in performance and the 6.5 ARSM matches the .260 Rem in a AR15 sized platform.

sharpshooter08

· #10 · Dec 7, 2008

What kind of scope are you using for the .338 and which scopes would you reccomend for long distance shots?

constructor

Discussion Starter · #11 · Dec 7, 2008

sharpshooter08 said:
What kind of scope are you using for the .338 and which scopes would you recommend for long distance shots?

I have a Leupold 4.5-14x50 that I swap back and forth between rifles when I test.
Scope choice depends mainly on $, I always use mildot reticles though. I have a Nightforce that may be the best but, it is heavy and cost apx $1500,
The Leupold Mk4 6.5-20x50 is my favorite seems like it was $899?
I have a Burris Black Diamond on my varmint rifle that I also like and it was only $500 I think.
all of those are 30mm.

Nikko Sterlings are air gun scopes and IMO have a limited adjustment range even though they are being sold out of shotgun news as high power rifle scopes. They are made in Japan and 3 different companies are offering them by different names, you can recognize them by a slanted front bell and green tinted lens.

Check Natchez Shooters Supply, Optics Planet, Bear Basin outfitters and SWFA
The Falcon Scopes seem to get decent reviews also-linkhttp://www.snipercentral.com/menace4.htm

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marinesg1012

· #12 · Dec 7, 2008

I have a leupold VXIII 6.5-20X long range target (back when that meant something) that premier reticals installed the mildots on the first focal plane. That is a great scope, I have it mounted onto my bolt gun right now but I can pull it off to test rifles if I need to.

opensights

· #13 · Dec 8, 2008

Wow you guys are given me the reloading bug I may have to learn this stuff yet lol. Any way I as just reading about snipers using .338 lapua is it similar to this cartridge. Damn now Igoto get two more lowers before they dissaper :lol:

Wardog

· #14 · Dec 8, 2008

hmm, with DPMS not taking orders, you might have something there

I have a 308 on order, no idea when its supposed to be done but its supposed to beable to work with 6.5 Creedmore or 338 Fed uppers.

By going with a lightweight .223 platform you have effectively provided a service that lets the user community choose from .223, 6.5, 6.8, 338, 510......

hehe; whats next?

gj

Cold

· #15 · Dec 8, 2008

ahh forget it.

constructor

Discussion Starter · #16 · Dec 8, 2008

I kind of doubt we will ever meet.

Cold

· #17 · Dec 8, 2008

Could be.

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