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7.62mm X 51mm R1M1 ammo

Rifles, Machineguns, Mortars, etc...

7.62mm X 51mm R1M1 ammo

PostAuthor: PaperStreet 2/75 » March 25th, 2006, 4:34 pm

Anyone have any insight on this stuff?

I picked up a 140 rd battle pack (sealed in plastic with an easy tear opener) for $40. This is high based on some of the threads I have seen. One guy stated $25 for a battle pack, another said $38.

Anyway, the ammo is South African and is headstamped B81 R1M1 7.62. Some users have compained that it is dirty and uses a tar sealent which gums up the action on certain rifles (HK 91 is mentioned). It appears to differ quite a bit per lot as far as cleanliness.

Now, the R1M1 is also noted to be more accurate than the later M1A2. I haven't tested yet, but I plan on putting it through a SA58 tomorrow is anyone is interested in accuracy results.

Also, the cases seem real clean on the outside. Nice shinny brass.
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PostAuthor: Rock Island Ranger » March 26th, 2006, 8:12 am

1000 round of 7.62 x 51 Nato. Made at Salt Lake City arsenal. $240
Ammo man on the net.
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PostAuthor: PaperStreet 2/75 » March 27th, 2006, 3:03 pm

Thanks Abell. That guy seems to be the man to go to for many different types of ammo. I have heard he has a large private stash for some rounds.

Just want to make a couple of extra notes on 7.62 ammo.

First, if you have anything headstamped 'CAVIM', you may want to be careful. The only reason I bring this up is because I currently have some in my stash and ran across this this AM. DSA Warning. Anyone want to guess what I was putting this through? :roll:

Anyway, the CAVIM headstamped has been removed from my immediate supply and replaced by the SA manufacture mentioned above [for now].

I can't give any accuracy results as of yet since I am having issues with my SA58. Suffice to say things aren't right and I need to do some adjusting. Don't take this as a knock on the weapon, I just need to do some adjusting and will post when complete.

Later.
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PostAuthor: want2race » March 31st, 2006, 11:25 am

I'm interested in your accuracy results, specifically compared to something like American Eagle 150gr stuff. I have some crap Indian stuff that is 147gr, KFH headstamp or something like that. I can get 2MOA out of my FAL using the American Eagle ball ammo but it opens up to 4MOA using the Indian stuff.

I had some problems with a few of them not firing (fully dented primer, stuborn powder). Perhaps I was a little too aggresive with my trigger work. I "re-reworked" it and last monday she ran like a champ. FAL's are so addictive, build number two in progress.


I've heard some negative comments about the Lake City training .308 ammo. I was going to pick up a box of 500, but held off after hearing some complaints.
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PostAuthor: Flesh Thorn » March 31st, 2006, 11:35 am

That Indian 7.62 has blown up a few receivers on both FALs and HKs. Don't shoot it. Paperstreet, you can get the SA 7.62 a litttle cheaper, but you will have to figure in shipping fees. AIM SURPLUS has SA 7.62 battle packs for $23.95. I think I paid about $32 delivered.
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PostAuthor: PaperStreet 2/75 » April 18th, 2006, 12:53 pm

Well, I finally got some testing of the SA R1M1 in today. I was waiting on a front site tool for my piece. Turns out my front site post is too high so I had to screw it all the way down. FWIW, there are 4 different front site posts heights for th FAL/SA58. I'm going to order the next shortest one so I can fine tune this thing.

Anyway, I shot some groups today. Results as follows out of a warm and clean bbl off sandbags:

50 yds, I fired 4 3 shot groups - 1 3/8", 2 1/1", 1 1/2", and 2 1/8"

75 yds, 1 9 shot group - 5 1/2". If I take out the most extreme flyer it is 3 1/8".

I unconsider these results unacceptable.

So, SA is out and Portugeuse (sp?) [CAVIM headstamp] is out.

I wanted to put some Federal 168 gr Gold Medal through it just to see what happened but forgot to bring a box to the range. That shit is damn expensive to shoot anyway.

FT - I will stay away from the Indian.

want2race - I'll pick up some AE and see what happens.

Basically, I very disappointed right now.
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PostAuthor: want2race » April 18th, 2006, 3:43 pm

Last week I took some guns out to check accuracy. Braggin time. I shot a 5 shot .502inch group at 100m with a .300wm bolt gun. Shot off the bipod and no rear bag with a reload after the first 3. My personal best for 5 shots. Ammo was Federal 190gr SMK.

The best 3 shot group was .192inch center to center at 100m. Can't remember if it was from the same gun, I was testing two of them.

Of course we all know bolt guns are accurate, I just had to do my part.

I also shot a few SR's. I was averaging .75inch groups out of barrels that gaged 5.5 and 6 on the throat erosion (4 is like new, 9 is shot out). I'd shoot two groups of three at .5 and two at .8 and change. Not too bad for guns that have been around the block a time or two.

Next time out, hopefully, I'll have my new Para FAL build to test out. 13 inch barrel. I'm interested to see the difference in performance from my 16.25 barrel.
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PostAuthor: RangerX » April 18th, 2006, 3:47 pm

want2race wrote:.... I was averaging .75inch groups out of barrels that gaged 5.5 and 6 on the throat erosion (4 is like new, 9 is shot out). I'd shoot two groups of three at .5 and two at .8 and change. Not too bad for guns that have been around the block a time or two.....


How does one determine throat erosion? Also, what would be considered a "standard" number of rounds to put through a barrel before it was considered shot out?
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PostAuthor: want2race » April 19th, 2006, 3:55 pm

Sorry for veering this way off topic:

The bolt guns in .308 are supposed to have a barrel life of 6000rounds. I've heard that the .300 WM barrels are only good for 1500. But officially, there is no set round count for small arms. That's what Rock Island says anyway. We used to keep round counts on the SAW barrels, but that was a long time ago. The M242 25mm still has a round count but everything else (smaller) is done by gage and accuracy performance testing. "Fire 'til failure."

There is a specific gage for throat erosion. Basically a controlled diameter rod that is plunged into the chamber side. The depth determines the number on the gage. It's the same gage as the M-14 throat erosion gage.

As for the SR's. It really depends on the rate of fire more than the round count. Fired slow you could get thousands of rounds without a drastic change in performance. Fired fast you could get hundreds. Fired fast enough to be too hot to touch voids any and all warranty from KAC. Me? I'll just order a new barrel for it. Just got my KAC barrel nut tool! No more using my homemade one.

Anything else we should start a new thread.
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