What Hornady says VS what it does - M14 Forum

M14 Forum


What Hornady says VS what it does

This is a discussion on What Hornady says VS what it does within the Ammunition forums, part of the M14 M1A Forum category; I was looking at the Hornady load data for the Hornady 308 Win 198 Gr ELD-X & ELD Match ammo and it indicates that under ...


Go Back   M14 Forum > M14 M1A Forum > Ammunition

Reply
 
LinkBack Moderator Tools Display Modes

Old March 16th, 2017, 07:00 PM   #1
Rifleman
 
Join Date: Aug 2010
Location: Falls chruch VA
Posts: 59
What Hornady says VS what it does

I was looking at the Hornady load data for the Hornady 308 Win 198 Gr ELD-X & ELD Match ammo and it indicates that under no circumstances are you to load a round that is hotter than 2550 FPS. And that is only with one powder, Accurate 2460, the remainder are 2500 or 2450 FPS.

But with the Precision Hunter ammo, 308 Win, 178 Gr, the anticipated velocity is 2600 FPS.

The service rifle section of Hornady's Vol X indicates it should not be loaded for over 2400 FPS.

The round is going to be used in a bolt action M24, not an M1A. So how do I load this to get to 2600 fps?

- Bryan

BWHookDrver is offline  
Remove Ads
Old March 16th, 2017, 07:18 PM   #2
Old Salt
 
WaM14gunner's Avatar
 
Join Date: Nov 2016
Location: Washington
Posts: 1,067
Wont be easy I don't think. You are talking about 30-06 speeds there, if you mean a 198gr bullet. For a 178, sure, use R15, about 45 grs.

WaM14gunner is offline  
Old March 16th, 2017, 07:26 PM   #3
Grunt
 
Random Guy's Avatar
 
Join Date: Jan 2017
Location: No. VA
Posts: 83
Bryan,
I think you meant 178 grain not 198 grain (typo). The Hornady loading manual is pretty conservative. I have used Alliant Power Pro 2000-MR with the 178 Horn Match ammo in my M24R to get the velocity I want for 800 and 1000 yard shots at Quantico, but the COAL = 2.880" (so its a single load round).

The Alliant Powder manual with 175 SMK max is 47.7C (compressed) with a velocity of 2760. The 178 gr should be downloaded a little bit relative to 175 SMK, but regardless I think that load data is probably too hot at magazine length, but its worth experimenting with 45.0 to 47.0 (max) grains in a ladder test of your rifle - just load it a bit long (2.85"+). I got 2763 fps with 47.4 in a Lapua case with Fed GMM primer at 2.880. (ES =31, SD =13). In fact I shot a respectable 183-2x (out of 200 possible points) at 800 yards last April with my M24R, but I think some fine tuning of the load is still in order. Here's a short clip at 800 yds that day.

http://vid289.photobucket.com/albums...pseyh7faqp.mp4

...good luck and let us know if you find a magic recipe...but I recall the ES and SD with 47.0 grains was impressive with the 178gr bullet (single digit SD of 8 I think). 46.0 grains of PP-2000-MR should get you to 2600+ fps. I still haven't seen pressure signs with this load up to 47.4 at 2.880", but work up slowly - as it has lots of mojo...

Warning: I don't know the overall length of the 178 ELD/ELD-X bullet, but presumably its longer than the 178 BTHP match bullet that I used - so please download from what I stated as I suspect you are using a longer bullet that will displace more internal case capacity, even if its the same weight. Maybe start at 44.0 to 45.0 and slowly work up in 0.2 increments of 3 rds each to see what groups well. Also, I was not using CCI #34 primers with this load, which are mil-spec primers and are basically magnum primers, so don't use this data with that primer(!) I used Fed GMM primers.


Last edited by Random Guy; March 17th, 2017 at 10:50 AM.
Random Guy is offline  
 
Old March 16th, 2017, 07:50 PM   #4
Scout Sniper
 
Join Date: Apr 2012
Location: Oscar Mike
Posts: 838
Re17 will get you there. People have had good results with 2000mr pushing heavier 308 projectiles. Re17 worked well with the 208 amax in 308. During my load testing it wasnt hard to get a 208 amax over 2600 with re17 with a 24" barrel model 10 savage.

spsosicmcise is online now  
Old March 17th, 2017, 05:34 AM   #5
wxl
Designated Marksman
 
Join Date: Feb 2014
Location: South Texas
Posts: 612
Couple points

You do have a chrony, right. Other wise you will never know.

The load manual is not always the velocity you will get with your rifle. Again why you must have a chrony.

Load manuals specify a particular barrel (length, twist, etc). Yours will be different. No 2 barrels will always perform the same.

If you need a specific velocity then you must work up to it, especially if using other powders that look suitable.

wxl is offline  
Old March 17th, 2017, 09:13 AM   #6
Super Moderator
 
Phil McGrath's Avatar
 
Join Date: May 2004
Location: Silverdale, WA.
Posts: 7,469

Awards Showcase

Quote:
Originally Posted by BWHookDrver View Post
I was looking at the Hornady load data for the Hornady 308 Win 198 Gr ELD-X & ELD Match ammo and it indicates that under no circumstances are you to load a round that is hotter than 2550 FPS. And that is only with one powder, Accurate 2460, the remainder are 2500 or 2450 FPS.

But with the Precision Hunter ammo, 308 Win, 178 Gr, the anticipated velocity is 2600 FPS.

The service rifle section of Hornady's Vol X indicates it should not be loaded for over 2400 FPS.

The round is going to be used in a bolt action M24, not an M1A. So how do I load this to get to 2600 fps?

- Bryan

Bryan, two things come too mind. 1 is that a 198gr bullet is long #2 when seated too 2.82 COAL is intrudes pretty deep into the case. In my honest opinion this really is too long of a bullet for use with a .308 size case and the only way there going too have any chance of working is too seat them out longer and then you not going too gain much.

And them for the big Magnum...

Phil McGrath is offline  
Old March 17th, 2017, 11:32 AM   #7
Grunt
 
Random Guy's Avatar
 
Join Date: Jan 2017
Location: No. VA
Posts: 83
BWHookDvr, the 50th Anniversary Lyman reloading manual has a lot of recipes for the 308W with a 178 AMAX for bolt action rifles, so that data may be useful for you:

(no data for PP-2000 MR unfortunately)

Phil, the original poster is most likely referring to the new 178gr Hornandy ELD-X and ELD bullets (they don't make a 198 grain version, so I deducted he had a typo..).

The reported BCs in these bullets is very high, here's the ELD-X (expanding bullet for hunting, here's the two flavors)

ELD (Extended Long Distance target bullet (178gr):
..just an fyi.

Random Guy is offline  
Reply

  M14 Forum > M14 M1A Forum > Ammunition

Moderator Tools
Display Modes


Similar M14 Forum Discussions
Thread Thread Starter Forum Replies Last Post
Hornady 155 BTHP factory coal? Redbear14 Ammunition 5 December 30th, 2015 02:27 PM
For Sale: Hornady Lock-N-Load AP Progressive Press with EZ-ject Brand New in Box JGrelle BX 1 July 29th, 2015 11:18 AM
Progressive presses....insight for choosing ?? Sapper50 Ammunition 49 September 19th, 2014 10:33 AM
For Sale: 30-06,7.62x51, 30 Carbine,.223, 5.56 Brass, Bullets, Hornady Dies, Shell Plates,Tools Lone Wolf BX 14 August 7th, 2014 06:47 PM
REDUCED!!! 308 reload package, match brass, match bullets, hornady and sierra match lord of war619 SPF 10 January 2nd, 2012 02:41 AM



Top Gun Sites Top Sites List