175 gmm = +/- xm118 lr - RimfireCentral.com Forums

Go Back   RimfireCentral.com Forums > > >

Notices

Join Team RFC to remove these ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 03-05-2017, 07:45 AM
NF1E
US Marines Veteran NRA Member - Click Here To Join!

Join Date: 
Oct 2013
Location: 
NW CT
Posts: 
348
TPC Rating: 
0% (0)
175 gmm = +/- xm118 lr



Log in to see fewer ads
Just for my own information, I pulled 10 rnds each of 175 GMM and XM118 LR from 2011 randomly from the stash.

For what it is worth, after pulling bullets from casings and weighing components this is what I found.

Both appear to use Reloader 15 as powder.

GMM adverage power charge 43.5
XM118 " " " 43.2

Bullet weights were the same.

XM118 bullets sealed at cartridge neck.

XM case weight is approx 3 gn heavier 404.1 than GMM 401.3

Primers both appear to be 210M.

This was done because at 200 yds. the impact has been identical.
Chrono at 12' is the same for both.

Conclusion 6 of one half a dozen of the other.


Semper Fi
Art
Reply With Quote
  #2  
Old 04-01-2017, 07:38 PM
mikeinco2014

Join Date: 
Nov 2014
Posts: 
1,112
TPC Rating: 
100% (2)
WHAT YEAR IS YOUR 118LR ?

IT WAS REPLACED WITH A GENERIC IMR4064 LOAD( FORGET THE NEW NAME).

the 175 lr load went thru at least three variations each one getting slower.
designed as a bolt gun round, it bent op rods in m14's in warm, then hot desert temps.

in the end they opted out of "great bolt gun accuracy" for generic 7.62 accuracy.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off




All times are GMT -5. The time now is 12:54 AM.

Privacy Policy

DMCA Notice

Powered by vBulletin
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimisation provided by DragonByte SEO (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2000-2018 RimfireCentral.com
x