Question about 178 grain amax in .308 edited

[handym3000]

I changed the tittle and contents of this thread because it was the wrong question to ask. and asked the wrong way it was too confusing.

sorry

Question about 178 grain amax
I’m kind of new to rifle reloading.

I have 3 types of brass
Remington peters brass 308
Lithuanian ggg 03 brass nato spec
Indian 75 ofv

rifle is a remington 5r milspec 11.25 twist 24" barrel

I have cleaned all the cases,
Fully resized the brass w/ rcbs x dies
Brass oal 1.995 as per the direction w/ the x die.
Oal 2.810.
Cleaned the primer pockets w/ the rcbs wire brush cleaner
Chamfered and deburred the case mouths by hand.
Used the rcbs primer pocket tool for taking the crimps out of them.

Now I have 11 lbs of IMR 4895
I am using hornady 178 grain amax non moly coated
cci 200 primers


Now the question is this:
As per the research I have done it says 44 grains = 2,600 fps in commercial brass as per the lyman book.

Now for the Remington cases I was going to use 44 grain=2,600 fps as per the lyman book max load.

Should I reduce the powder charges 10% for the lithunaian brass and the Indian ofv brass to get the 2600 fps I need?

 

[ArcticLight]

Re: Question about making m118lr

So the real question is "How do I make a <span style="text-decoration: line-through">175 gr smk </span> er 178 Amax go 2650 to 2710 fps with a variety of loads?"


#1. Get a chrono

#2 make your bullet go 2650 to 2710 fps., I found 2685 to be the mean average on my 2003 lot.

My own replication was the 45 gr of Varget load in a Winchester case (Black Hills re-use) and Fed 210M primers.

My bullets go exactly the same speed as the lot of M118LR I have.
Cheap, consistent, reliable, all one case, all one load.

Couldn't help you on all those other loads, lot of variables there.

But if you search the site for the M118LR there's a dozen or more recipes. Trying to stay with the same powder etc is probably a waste of time as the end result is still 2685 fps or so regardless of bullet, case, powder, or primer.

 

[BCP]

Re: Question about making m118lr

I would start with 42 grains. 44 in mil brass would be a bit much. Also you might want to weigh the brass I know remington is heavier than winchester but I don't think it's as heavy as mil stuff.

IIRC M118lr ammo is 42.5 grains RL15 and a 175 grain SMK.

edit: FWIW my 175 load was win cases, 42.5 AA2520, and CCI mag primer. I just got 12lbs of Varget so now I am working on that, it looks like it will be in the 43-44 neighborhood with a win case and maybe 43 with LC.

 

[handym3000]

Re: Question about making m118lr

i will be buying a chronograph, i probably need to at this point.
too many variables.

i am shooting a remington 5r milspec 11.25 twist 24" barrel 5 groove.

i should have changed the title to:

how to make a 187 grain amax go 2600 fps in mil brass using imr 4895.

should i reduce the book loads by 10% to be safe or what do you think?