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  #1  
Old 09-14-2014, 06:15 PM
m1ashot m1ashot is offline
 
Join Date: Nov 2009
Location: 40 miles from NS car kows the way
Posts: 722
Default Chronograph LC VS HXP 72

80 degrees fired in shaded bench point
25 shots each
Fulton Armory Tanker lapped bbl.

LC 69
Hi 2512.5
Lo 2410
SD 24.3
AVG 2477.4
ES 104

HXP 72
Hi 2699.9
Lo 2521
SD 45
AVG 2631.1
ES 178.7

SIA SOCOM 16 lapped bbl
7.62 x 51 NATO 147 gr FMJ Lituhainia from Weidners

Hi 2723.8
Lo 2559.1
SD 41.9
AVG 2627.5
ES 164.8

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  #2  
Old 09-15-2014, 05:31 AM
8milimeter 8milimeter is offline
 
Join Date: Oct 2009
Location: Frederick, MD
Posts: 927
Default ammo

Question; was the LC or HXP from pulled linked MG ammo.
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  #3  
Old 09-16-2014, 08:02 AM
patio patio is offline
 
Join Date: Oct 2009
Location: Dayton, Ohio
Posts: 634
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Which ammo was more accurate?
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  #4  
Old 09-17-2014, 06:41 AM
30calmike 30calmike is online now
 
Join Date: Oct 2012
Location: Michigan
Posts: 151
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I have had similar results, although I would have to find my notes on it.

When LC was available from the old DCM (for free!) and we shot it at our local Club matches, the LC 69 was not very good. It was underpowered as your readings indicate. LC 72 shot much better and its velocity is closer to the Greek stuff and the M2 original specs.

The story I always heard was that some of the late 60's M2 was loaded light as it might be used in hot climates (Viet Nam, maybe?).

Anyways, we always pestered our Rifle Chairman to give us the LC 72 and avoided the LC 69; all of it free. How spoiled were we!

I don't believe there is a difference in any of the cartridges if it's boxed, linked, or in clips; I never recall the loadings being unique.

Enjoy the available M2 while it lasts!

Mike.
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  #5  
Old 09-17-2014, 07:26 PM
m1ashot m1ashot is offline
 
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Location: 40 miles from NS car kows the way
Posts: 722
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No both on clips from bands in can. No comments on short barrels? Both shot equally. The high SD's would spread them out at 300yd
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  #6  
Old 09-17-2014, 07:34 PM
Orlando Orlando is offline
 
Join Date: Oct 2009
Location: Ohio
Posts: 10,611
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Quote:
Originally Posted by 8milimeter View Post
Question; was the LC or HXP from pulled linked MG ammo.
M2Ball is M2Ball, linked HXP and LC is the same as HXP and LC loaded in enblocs
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  #7  
Old 09-18-2014, 12:18 AM
8milimeter 8milimeter is offline
 
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Location: Frederick, MD
Posts: 927
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The de-linking process loosens the necks which definitely effects the accuracy.
More so with the HXP ammo's tar sealant IMHO
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  #8  
Old 05-29-2019, 08:13 AM
ARMOR1SGRET ARMOR1SGRET is offline
 
Join Date: Apr 2016
Location: North Mississippi
Posts: 4
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Pulled 2 different lots of LC 69 yesterday. One with red primer seals the and one with blue. They both contained 44.5 gr of what looked like 4895. The other ammo was HXP 62 it contained between 48 and 49 gr of what looked like 4895. I evened out the HXP powder to 48.5 and put a 155 amax bullet in it. I shot one 4 shot group at around 2 in at 200 yards. All lots shot better with 155 amax. I just neck sized with no expander. I then took some once fired LC 69 loaded it with 48.5 IMR 4895 with a 155 amax and 8 with 150 hornady FMJ. They both shot 3 in at 200.I guess they like to be pushed in my rifle. The 150 s did almost as well as the 155s.Ready to stretch it out. I try to triple check as my eyes aren’t what they used to be but do ok.They are getting to the M2 spec but primers are still round on edges. WLR primers. I just can’t stop rolling around with ammo performance.
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  #9  
Old 05-30-2019, 02:54 PM
Ammolab Ammolab is offline
 
Join Date: Jan 2013
Posts: 372
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Quote:
Originally Posted by 8milimeter View Post
The de-linking process loosens the necks which definitely effects the accuracy.
More so with the HXP ammo's tar sealant IMHO
Tar sealant used on LC M2 ball also. I would think linking and delinking might effect concentricity of case & bullet.
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  #10  
Old 06-01-2019, 08:49 PM
lucky52 lucky52 is offline
 
Join Date: Oct 2009
Location: Texas
Posts: 349
Default Lc 67

Just for grins last week I pulled 8 rounds of LC 67.Thy all had a pretty consistent 44.5 grains of 4895 looking powder.I cleaned the tar off the bullets and re-seated them.I'll shoot them in my O3A3 next week.
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