Once fired brass in my AR10, but need opinion on powder charge

[Monmouth]

My AR10's load is dialed in with the following formula:

Winchester brass
175g SMK
CCI 200 primer
43.5g of Varget
2.797 COAL
Sub 1/2MOA grouping 100 yards, 1/4MOA if I do my job (still need much more practice).

I would like to start using mixed head stamp 308 brass (so I can practice more and not fret over the brass cost) and here's my question, do you think my powder charge is too high for LC or other Mil spec brass? I don't mind if the different head stamp brass opens up the group a little at the 300 yard range since anything beyond would be shot with the above exact load (and data collected).

To give more insight, in a few short months, I will be swaging my own 175g HPBT projectiles thus my overall cost of 308 ammo will drop significantly with my only real cost being powder charges. I would like to shoot my fired mixed head stamp brass and swaged projectiles at my 300 meter range to increase trigger time and keeping the same load data as consistent as I can. When I travel to other ranges, I would only use the above load or until my swaged bullets prove themselves in consistency.

Thoughts?

 

[No1]

You will just have to work up a load and see. FWIW I started with Hornady Match Brass, then worked up another load with LC brass and it ended up being exactly the same load with Varget.

 

[No1]

Re-reading your post, There are a couple Mil headstamps that I separate out and don't load them for one reason or another, usually primer seating issues. The loss from a 1000 batch of mixed headstamp, is usually less than 25 cases. Nothing to cry about. I don't recall exactly which ones since I'm at work now.
I do keep my LC separated since I have enough to make it worth seperating. I load all the other good mil headstamps together WCC, FCC, PMC.

 

[Monmouth]

Thank you guys. I have no problem culling LC, pmc, etc from the pile (5000 cases and grows monthly) if they require a step down in charge so that my master load coincides with the balance of fired brass.

I just don't want several different charges to accommodate a range of mixed brass. Looks like the Hide may have a sweet deal on fired 308 cases that are deprimed, swaged, giraud annealed, and sorted by head stamp.

 

[redbullitt]

Fwiw I usually run about 43g varget and 175s through my ar10. Pressure signs start to show for me at 43.5, so if I were running mixed LC etc I would probably drop he charge weight just to be safe.

 

[Monmouth]

That's what I was thinking with LC brass and don't want to fuss with different charge weights. Any other headstamps that forced you to drop charge weight?

 

[MJoyce]

My apologies for breaking into your thread here but you may find this a new(?) problem and of interest. Anyone had any issues with H4895 and 168gr bullets failing to eject properly from their AR10s? My 2 almost new Colt 901s do not like H4895 with the 168s. They like BLC2 and H380 along with 145s, 150s and 168s but will not properly eject the 168s with either min nor max* H4895 charges. They will both shoot the 145 and 150s all day long with the H4895 but refuse to eject the 168s. I'm using all military brass, CCI 34s and Hornady BTHPs. Both guns have been back to Colt for evaluation once and will not be going back again. I'd like to load some IMR4895 with the 168s to see if that makes any difference but there is none to be found at present. Any ideas?