Main Menu
Newest Members
rangerr93sport, PappybearAkRVcp, hunter121689, TNTBR, psquealer
60010 Registered Users
Top Posters
dogcatcher 76324
stxranchman 51828
RWH24 44568
rifleman 43686
BOBO the Clown 40882
BMD 40536
Big Orn 37484
txshntr 33494
bill oxner 31783
sig226fan ( 30453
Forum Stats
60010 Members
45 Forums
470714 Topics
6175364 Posts

Max Online: 16728 @ 03/25/12 08:51 AM
Topic Options
#6382695 - 07/25/16 08:58 PM Load Dev / Ladder Test Question
RedSnake Online   content
Veteran Tracker

Registered: 05/08/10
Posts: 2857
Loc: Dallas / Nolan County
Is it preferable to do load dev with unfired or once-fired brass?

by RedSnake Enterprises, LLC

#6382793 - 07/25/16 10:15 PM Re: Load Dev / Ladder Test Question [Re: RedSnake]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9147
Loc: Lewisville, TX
I do it on new brass, and then confirm the same load works on fired brass once it's sized. If your sizing (case body and neck tension) is different than the new brass, then you can get a slight change in the load.
Type 01 and Type 06 FFL

#6382830 - 07/25/16 10:55 PM Re: Load Dev / Ladder Test Question [Re: RedSnake]
Big Stan Offline

Registered: 05/02/14
Posts: 229
I had made some good groupings with new brass on the 6.5 Creedmore, and next time out with neck sized brass of the same loads shot differently. I believe its the volume of the full sized case is smaller than the volume of the neck sized brass resulting in that variation.

If you full size new brass and fired brass, it may not change so much. Neck size is what changes.

Edited by Big Stan (07/25/16 10:57 PM)

#6382923 - 07/26/16 06:34 AM Re: Load Dev / Ladder Test Question [Re: RedSnake]
dee Online   content
Extreme Tracker

Registered: 04/10/10
Posts: 4627
Loc: Red River way
I tend to take new brass and load it then neck size the next 2 firings. After that I start bumping shoulders and I have never seen a difference in the load.
"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt

#6383362 - 07/26/16 12:56 PM Re: Load Dev / Ladder Test Question [Re: RedSnake]
FiremanJG Online   content
THF Celebrity

Registered: 12/16/08
Posts: 17257
Loc: Wolfe City, TX
Depends on how much brass you have for the rifle. When I got into 6.5 CM business I ladder tested, and group shot on virgin brass, because I started with 500 pieces. Once they were all shot once I stuck with the same load, never retested, and didn't notice a change.

But if you have 100 pieces of brass for a rifle, it's not too far down the road that you've shot them all once. After a .002" bump there's be nothing wrong with testing groups within the node again, but I wouldnt re-ladder test.

800 Yard Steel Rifle Range
Long Range Shooting Instruction
Memberships and Classes Available


© 2004-2016 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide