7mag & 175eldx?

Pete Carrasco

Member
Joined
Jul 21, 2019
Messages
17
Location
Roswell NM
is anyone running a 175 eldx out of there 7 mag ? if so what powder and charge are you running and what kind of FPS are you getting. hornady book says H1000 with max should be around 2700 which i though was slow any help?
 

DNADave

Well-Known Member
Joined
Jun 18, 2019
Messages
318
Location
Seattle
Make sure you have the twist to stabilize that bullet. Hornady recommends 1:8 or faster.

Here's what happens using a 1:10. Notice the holes are not round.
 

Attachments

  • 20190901_173822.jpg
    20190901_173822.jpg
    948.1 KB · Views: 154

WAMBO

Well-Known Member
LRH Team Member
Joined
Dec 22, 2001
Messages
1,003
Location
Southwest Desert
My 7mmRM wears a 26" Proof 1-9" twist barrel, with 69.7 grs of Retumbo it gets a 175 ELD-X out at 2950 fps, I got 2900 with a 68 grs of H1000.
 

Pete Carrasco

Member
Joined
Jul 21, 2019
Messages
17
Location
Roswell NM
my question is how is everyone getting those speeds i understand your powder measurements but that is over max in book I've always been one to go off of a book never over max loads ?
 

WahooYahoo

Well-Known Member
LRH Team Member
Joined
Jan 27, 2016
Messages
485
Location
The Great Republic of Texas
I stay back from max loads for several reasons. Keeping that in mind my load is 68.9gr H1000, fed 215, Norma brass, ... I forget my COAL, but that makes tiny little bughole groups waaaaayyyy the heck out there @~ 2850fps
 

WAMBO

Well-Known Member
LRH Team Member
Joined
Dec 22, 2001
Messages
1,003
Location
Southwest Desert
Also what is the COAL shown for 175 ELD-X in the Hornady book?
Probably 3.340" or less, I have my rifle's barrel chambered to allow the 175/180 grain bullets to not have the shank of the bullet just above the boat tail to be below the neck shoulder junction of the case which allows for being able to use a little more powder safely.
You should always work up your load slowly watching for pressure signs, flattened primers, ejector marks, harder bolt lift/extraction etc.... , if you experience any of these signs you back down your powder charge, neither of the loads I use have any signs of high/max pressure.
 

Longshot284

Well-Known Member
Joined
Apr 22, 2017
Messages
75
It’s been stated above but the OAL for SAAMI spec 7 mag is short and it’s also not a 65k psi “magnum” like the 300 WM etc. so the reloading manual will be conservative because Hornady’s published loads were shot in a SAAMI spec pressure barrel.
 

Hiwayman92

Well-Known Member
Joined
Nov 1, 2014
Messages
342
Location
Wyoming
I run a 7mm WSM and can hit 3k in a 26” barrel with RL-26 or H1000. Either powder or Retumbo will likely get you real close to 3k.
 
Top