Load Workups‎ > ‎308‎ > ‎

Hornady 178gr ELD-X

Load was worked up in a Savage Trophy Hunter XP in .308
CCI BR2 primers
SIG brass
Varget powder
Hornady 178gr ELD-X

My first trip to the range was disappointing to say the least.  These are not the groups that this gun is touted to be capable of.  I left frustrated and annoyed that I wasted about $30 worth of components, and learned NOTHING.

After some thinking and googling, I discovered something that could absolutely be the cause of the horrible grouping - the rail mount allen screws were loose enough to cause the horrible grouping.  So, I cleaned/prepped the brass again, in the same fashion I did before, and loaded up another 50 rounds withe same powder, primer, brass and bullet.  I put some loctite on the screws, and torqued the rails down tight, and let them set 24hrs - now, back to the range.

My second trip to the range, wasn't much better.  I only found one group that was anywhere close to what I think this rifle should shoot, and that was with 42.00gr of Varget.  Another issue, and entirely my fault, is that I forgot to put the SDcard into the Labradar before I left for the range.  Now, the data is on the internal memory of the chronograph, with no way to extract it out to anything other than the screen.  bummer..  

What I did find pretty entertaining, and made me feel like all was not lost...  At least my reloading seems to be consistent.

       Trip 1 (fps) Trip 2 (fps)
 41.80gr   Average  2570 2573
  Highest2579 2583
  Lowest2558 2567
  Ext Spread20 16
  Std Deviation8 6
    
 42.00gr Average 2593 2592
 Highest 2605 2598
  Lowest 2583 2586
  Ext Spread 22 12
  Std Deviation 9 5
    
 42.20gr Average 2613 2608
  Highest 2621 2618
  Lowest 2606 2595
  Ext Spread 15 23
  Std Deviation 6 8
    
 42.40gr Average 2619 2610
  Highest 2627 2618
  Lowest 2613 2602
  Ext Spread 14 17
  Std Deviation 6 7
    
 42.60gr Average 2628 2628
  Highest 2636 2640
  Lowest 2624 2620
  Ext Spread 11 20
  Std Deviation 5 8
    
 42.80gr Average 2620 2637
  Highest 2630 2653
  Lowest 2612 2615
  Ext Spread  19 38
  Std Deviation 8 16
    
 43.00gr Average 2652 2645
  Highest 2659 2652
  Lowest 2644 2637
  Ext Spread 15 15
  Std Deviation 6 7
    
 43.20gr Average 2666 2655
  Highest 2678 2664
  Lowest 2650 2636
  Ext Spread 28 27
  Std Deviation 10 11
    
 43.40gr Average 2668 2665
  Highest 2691 2682
  Lowest 2647 2649
  Ext Spread 44 32
  Std Deviation 16 12
    
 43.60gr Average 2689  2664
  Highest 2696 2670
  Lowest 2673 2655
  Ext Spread 23 16
  Std Deviation 9 6




Data from the Labradar form 1st trip to the range

41.80-43.60gr Varget



Comments