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Discussion Starter · #1 ·
I have a brand new DMR that I would like to reload for, so I ask what is the most accurate recipe for it?
 

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Every rifle is kind of its own animal. There are plenty of decent quality Match loads in existance for the AR15 that would work very nicely for the Sig556.
Firstly, you have to decide upon the bullet weight that you want to shoot from the rifle.

You have everything from 40gr-75gr bullets to work with. Choose one and run with it.

I like the Sierra load manual, they have recommended hand loads for every caliber. Most are spot on.
 

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Discussion Starter · #3 ·
But 5.56 is supposed to be loaded hotter than a .223, so wouldn't the .223 loads not take advantage of the chamber? I also have yet to find anything that addresses the 1:10 twist either. I want a hot and heavy round for distance.
 

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You should keep your expectations reasonable. A rifle with a 16 inch barrel is definitely going to have its limits on "distance" shooting.
I am going to be using a 69gr match bullet in my rifle and a 60gr Hornady V-Max.
Careful on how hot you load your ammo. That is were lots of folks get into trouble with hand loads. NATO ammo can be hotter than commercial 223 Rem ammo for sure, but if you're hand loading, stick to the 223 Rem load data. If you're after pure stopping power invest in a 308.
 

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Discussion Starter · #5 ·
I have a DMR which has a 21" barrel. I also have a .308 Savage Model 12 with a 26" barrel for greater distance. With the M-16A2 we were shooting out to 500 yards with iron sights in the USMC. I don't see why I would expect less out of a DMR.
 

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With the longer barrel of the DMR, look into loading for the 69gr and the 77gr bullets for the best performance at distance.
If you don't shoot beyond 200 yards, the 77's won't really be ideal since they are best in distances beyond 300 yards. For the 100-200 yard distances, the 60gr Hornady V-max and 69gr Match bullets would be better.
The best part is that the powders for 223/308 match shooting are the same. Invest in one that you like.
IMR4064
Varget
IMR4895
Re15
AA2520
Ramshot TAC

All of the above powders would be great for the bullets you're looking for and for the 308 match loads.
 

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Discussion Starter · #7 ·
nycstripes said:
With the longer barrel of the DMR, look into loading for the 69gr and the 77gr bullets for the best performance at distance.
If you don't shoot beyond 200 yards, the 77's won't really be ideal since they are best in distances beyond 300 yards. For the 100-200 yard distances, the 60gr Hornady V-max and 69gr Match bullets would be better.
Cool! Thanks!
 

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SWJewellTN said:
I have a brand new DMR that I would like to reload for, so I ask what is the most accurate recipe for it?
Here you go:

Read this to see what we've accomplished this last year or so:

http://www.sigarms556.com/viewtopic.php?t=4629

BTW - The 2009 7th Edition Hornady Reloading Manual has complete Service Rifle loads for the Hornady 75 grain BTHP for use in autoloaders (AR platforms) with a 1:7 twist and 1:10 twist. You ought you purchase yourself a copy of it and get to work.... :wink:

http://www.midwayusa.com/viewProduct/?productNumber=438424
 

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Discussion Starter · #9 ·
SkyPup said:
SWJewellTN said:
I have a brand new DMR that I would like to reload for, so I ask what is the most accurate recipe for it?
Here you go:

Read this to see what we've accomplished this last year or so:

http://www.sigarms556.com/viewtopic.php?t=4629

BTW - The 2009 7th Edition Hornady Reloading Manual has complete Service Rifle loads for the Hornady 75 grain BTHP for use in autoloaders (AR platforms) with a 1:7 twist and 1:10 twist. You ought you purchase yourself a copy of it and get to work.... :wink:

http://www.midwayusa.com/viewProduct/?productNumber=438424
Ordered, thanks.
 

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Just be sure to pay attention to the "Service Rifle Loads" and not the "Bolt Action Loads" for your 556 DMR.

Enjoy! :wink:
 

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Discussion Starter · #11 ·
SkyPup said:
Just be sure to pay attention to the "Service Rifle Loads" and not the "Bolt Action Loads" for your 556 DMR.

Enjoy! :wink:
I will. I have already picked up some 75 gr and powder. I'm supposed to receive my manual on the 12th.
 
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