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Load data request: M118LR duplicate

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Old August 28th, 2009, 08:31 PM   #1
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Load data request: M118LR duplicate

Hey, all. I'm about to acquire a Rem 700 SPS tactical soon and I plan on handloading for it. I would like to duplicate the military M118LR round to send through my bolt rifle (and maybe my M1A), but I'm having trouble finding load data online for the components I'm planning on using;

LC brass
175 grain SMK's BTHP
WLR primers
IMR 4895


If I could get a point in the right direction I'd really appreciate it gents. I don't have a chronograph so load development by projectile velocity won't work.


Last edited by Requiem; August 28th, 2009 at 10:13 PM.
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Old August 28th, 2009, 10:38 PM   #2
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The latest M118LR has a new powder and may not be loaded as hot as earlier versions. First the M118LR case has a larger capacity than standard LC cases. The case capacity is very close to commercial 308 Lapua cases. The new powder "looks" very similar to IMR-4895 and the load is right around 40.2 grains with a cartridge length right around 2.810". The bullet is suppose to be the Sierra 175 grain Match King but the shape seems slightly different. The original primer should be the M34 (CCI#34).

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Old August 29th, 2009, 05:49 AM   #3
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If you might use the load in both rifles, I suggest developing the load in your M1A first.
Then use that load in both guns (a load developed for the bolt-gun might be too hot for the gas-gun).

With your components I'd start at about 40 grains of IMR4895 and work up to about 41 grains.
I did a similar projects several years ago for my 308W M1:
Fed cases - 185 grain empty case weight
175 SMK
WLR
42.0 IMR4064
these gave a MV of about 2625fps
This was a fairly heavy load, and I used it only for LR shooting - 600 yards and further.

Jay Kosta
Endwell NY

Thanks from Nomad and tonyben
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Old August 29th, 2009, 05:52 AM   #4
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I don't have a recipe using the exact same components you are using but here are a couple of loads I developed for my Savage 10FLP and Remington Model 700 SPS (Federal 168 gr GMM Duplication). All groups pictured fired a 100 yards.

For the Savage 10FLP.

Bullet: Sierra 175 gr. HPBT
Powder: Hodgdon Varget 43.0 grs.
Primer: Federal 210M
Case: Lapua
Velocity: 2582
LOAL: 2.805 (2.230 Base to Ogive with Stoney Point)
Comments: Ten shot group measured 0.815.



Here's a five shot group with the same load.



In my 700 SPS I was trying to duplicate Federal 168 gr. GMM since it shot so well in my rifle (in spite of the long throat).

Bullet: Sierra 168 gr. HPBT MatchKing
Powder: Alliant Reloader 15 42.0 grs.
Primer: Federal 210M
Case: Federal
LOAL: 2.800 (2.230 base to ogive with Stoney Point)



I just tried this load last weekend so I haven't tweaked it much yet, here's a typical group.



I agree with Jay Kosta, 40 - 41 grs of IMR-4895.


Last edited by pbcaster45; August 29th, 2009 at 05:53 AM. Reason: Spelling
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Old August 29th, 2009, 08:23 AM   #5
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Search google or yahoo with IMR4895 308 or M118lr and all kinds of sites will come up. Am. Ballistics rates the vel. @2600fps. Charts I have seen require 41.5gr of IMR4895 to duplicate it. Reduce 10% and work up

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Old August 29th, 2009, 09:11 AM   #6
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I shoot alot of bullets out of M118LR brass with IMR4895 and WLR primers. Depending upon what your particular rifle likes, somewhere between 41.0 and 42.0gr is where you want to be.

Don

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Old August 29th, 2009, 09:41 AM   #7
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Quote:
Originally Posted by oneshy View Post
Search google or yahoo with IMR4895 308 or M118lr and all kinds of sites will come up. Am. Ballistics rates the vel. @2600fps. Charts I have seen require 41.5gr of IMR4895 to duplicate it. Reduce 10% and work up
There's another question I have... do I not want to exceed a certain fps? I've heard to stay around 2600fps when duplicating the M118LR. I can only tell this by load data though since I said I don't have a chrony. Also, I searched google forever it seemed like and found no data regarding IMR4895 and a 175smk for a M118LR duplicate. If you have any links could you please post them?

I have ordered the Hornady manual which I've been told has a section for shooting through the M1A's so that will help me with that, but how much will it help with my to-come bolt gun?

Thanks guys.


Last edited by Requiem; August 29th, 2009 at 11:44 AM.
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Old August 29th, 2009, 01:20 PM   #8
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Basic reciepe for Match 852:
Brass: LC
Primer: Win Large Rifle
Powder: IMR-4895 41.5
Bullet: 168 Gr Sierra Match King
Muzzle Vel: 2580 fps Approx.

M118LR is same load with the 175 Gr Sierra MatchKing.

These have been around a long time and powder has been changed to RE-15 and Varget at times, but IMR is the tried and true powder for these loads.

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Old August 29th, 2009, 03:03 PM   #9
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A lot has to do with how you will be using the 175SM load,

The M118LR is designed for use at extreme range - for example 800-1000 yards. At shorter distances (out to 600-800 yards) the M852 load using the 168SMK is completely adequate.

For 1000 yards shooting with the 175SMK a MV of at least 2600fps from a gas-gun is about the minimum needed. From a bolt-gun, 2700fps should be reachable - but I don't know if that can be done with 4895.

If your shooting is in the 100-300 yard range, then MV is not as critical - so a lighter load will be ok and will give longer barrel life and will not stress the rifle.

There really isn't a need for full-power M118LR unless you will be shooting the long distances.

The load I mentioned earlier using 4064 was shoot successfully at 800-1000 in the 308Win M1.

Jay Kosta
Endwell NY

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Old August 29th, 2009, 03:25 PM   #10
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I want to use a single load for all distances and learn to shoot with it at all distances (possible, that is). Scout snipers do it, I'm gonna try to do the same.

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Old August 29th, 2009, 03:39 PM   #11
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ive found that 42gr of RL15 behind a 175gr works well in a R700. probably a bit stout for a M14. my other load was 42.5gr with a 186gr. still working up for the gas gun.

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Old April 21st, 2011, 10:47 PM   #12
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I actually just finished proofing an M118LR duplicate for my FN SPRA1 today.

Fed match brass (2.005 trim length)
Primer pockets trued, flash holes deburred and chamfered in and out
Necks chamfered

Fed 210 primers (can't find any 210M right now)
43.1g of RL-15
175g SMK seated to 2.220 (Ogive to base using Stoney Point)

Shot almost 50 rounds today on a bore that was already fouled. Several 5 shot groups ran from a best of .560 to a worst of 1.15 with my occasional called flyer excluded. Two 10 shot groups ran just over 1.2, but I don't know if that was me getting sloppy, the weapon getting hot, or both.

MV for two 10 shot groups averaged 2606 and 2593 respectively. SD and ES don't come to mind because I was happy with the performance. They weren't anything to write home about though...

From what I've been able to read, I think I'm pretty much where M118LR is performance wise. It shoots about as good as my previous favorite using the Berger 175s and 44.1g or Varget running about 2650fps, but with reduced expense. Whether or not it shoots as good at range, I have yet to find out.


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Old April 25th, 2011, 12:35 AM   #13
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JayKosta gave you a very classic IMR-4064 175 load thats shoots every bit as good or better than M118LR no chrono needed just load and go. If you must use IMR/H-4895 42.0grs in a mil-spec case does the job.

For the 175's 42.grs of IMR-4064 or 41.5grs Varget are my go too accuracy standard.

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Old April 25th, 2011, 03:13 AM   #14
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Saw this yesterday noting the current powder is Reloader-15

http://www.alliantpowder.com/product...reloder15.aspx

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Old April 25th, 2011, 05:16 AM   #15
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M118lr

M118LR
42.8gr Reloader15
168gr HPBT
Federal Case
Federal #210 Primer
2,665 FPS
This is the data I had for M118LR.

Thanks from Jrr051468
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