Lapua Senar'S

in theTRG42 338LM with the 300 Scenar and 93 grs Retumbo loaded to mag length is about .050 jump and they are extremely accurate at just over 2700 fps,,
I shoot the 123s in 6.5x47 with 38.5 grs RL15 and or Varget and they shoot about the same from .020 jammed to .020 jumped,,I load them .015 jumped and they really shoot good,,
 
I use the 155's for F-Class and have tried them from .002 off the lands to as much as .015 and they preform about the same regardless of jump distance. You have to do your own testing for your rifle tho.
 
Brux, I use the 136L scenar in my creedmoor and it doesn't seem to matter where I seat them.
I started at 2.850" and now I'm all the way back to 2.785" and my pressure seems lower.
My load is 2763 fps out of a 28" barrel with a SD of 7. I'm using h4350.
 
I am running 123's in my .260, jumping 10/1000's and 136's at 2.800. Both shoot well. I am in the process of running 185's in my 300 just to see what they do. Jumpimng them 10/1000's as well.
 
As others have mentioned, they don't seem fussy about jumping or being jammed. I'm running 136gr Scenar L in my 6.5x47 and it isn't fussy either way using ADI 2208 powder. Pointed a bunch to use in F-class later today and I've managed to half the size of the original point on them so I'll see if that makes any difference.