LC LR brass

[Exodus343]

does anyone know if these brass have a smaller case volume than commercial brass??

I am loading 42.5 grains of IMR 4064 with a 168 HPBT with my trim length 2.005" and COAL at 2.800"

not too hot is it?

[Ferrum]

http://www.calguns.net/calgunforum/archive/index.php/t-326408.html

Take a look at this thread...

[Exodus343]

http://www.calguns.net/calgunforum/a.../t-326408.html

Take a look at this thread...

that's for 223/5.56

is it the same for 308/7.62 brass?

[sigstroker]

Ehh, test it? Got some water? Got a scale? Got some brass?

[Exodus343]

Ehh, test it? Got some water? Got a scale? Got some brass?

Already loaded them lol...
guess range time we'll find out how they perform

[Ferrum]

that's for 223/5.56

is it the same for 308/7.62 brass?

I've heard, but never verified that the LC 7.62 brass is thicker walled and lower internal capacity than other manufactures. IIRC, most people start by dropping charges 1-2 grains to start. If your starting your ladder tests on the low end of the spectrum, your most likely good to go.

[Exodus343]

I've heard, but never verified that the LC 7.62 brass is thicker walled and lower internal capacity than other manufactures. IIRC, most people start by dropping charges 1-2 grains to start. If your starting your ladder tests on the low end of the spectrum, your most likely good to go.

hodgdon's data online said to start with 41.5 and the max is 45.9 compressed
I stopped at 42.8 grains with the OAL of 2.800"

I am confident I'm on the safe side, but has anyone else tried IMR 4064 with LC LR brass before?

[damndave]

Drop your load at least 1gr and start developing from there.

[Hoop]

42.5 in lc brass with a 168 is fine lots of people use that load.

I would say around 44 is max but some people go higher.

[seanorgm@earthlink.net]

G. I. Brass...

U. S. Military rifle brass tends to be heavier than commercial brass; the reason seems to be the web is made heavier to ensure extraction from semi and fully automatic weapons. (Handgun brass tends to be a bit heavier as well, according to 'the sources'.)

However, if you are on the starting side of the load range, you should be all right. You probably shouldn't load them to the same 'maximum', but a low end load shouldn't be difficult.

You can also weigh them against commercial brass. Since the outside is the same 'size', more weight means the inside is smaller.

[highpower790]

i think your good to go.i use the same brass loaded with varget up to 43 gr with a 168 or 175 for the M14.never a problem in 15yrs,just watch for signs of pressure...such as primer strike cratering.

[micro911]

Your load sounds good. I use LC brass (MC,, LC Match, LC LR). I use 42.0 grains of IMR 4064 with either Sierra 168 MK or 175 MK for my Remington 700 and M-1A. I have never had a problem with it.

[A and O]

You are good to go.

I bought a Dillon BL550 just for this very load you are using. Gotta love the 4064 even though it has to be weighed individually. Yep, one could build bridges with this powder.

42.5 grains at 2.800 OAL in LC NATO with 168gr SMK's pops out at 2,500fps +

My favorite combo

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Also bought the 223 conversion kit for the 550.

I use 25.5grns of the 4064 in LC NATO Brass, 2900fps and spot on accurate.
25.5 is the limit before compressing. I've gone as high as 26gr compressed (mild) but received no real benefit in doing so.