OzFclass

Hi All,
Have just purchased some J.L.K. 6.5 -140gr.V.L.Ds. Not having used V.L.Ds. before was looking for some info. on them and came across some Berger info. suggesting they were sensitive to seating depth. The article I read said to try from .010 jam to .040 jump in .010 steps and a sweet spot would be found. Has any one out there found this out, and what sort of jump you found to be successful.
I have previously only used 139gr Lapua Skenars at .020 jump quite successfully.
Cheers,
Trevor.

wrong i think you will find that the jump interval is 0.040" so start at 0.010" in then 0.030 of then 0.070" and so on

or if you don't like to jam them start 0.010" off then 0.050" then 0.090" off and so on .

edit i found it here

Load 24 rounds at the following COAL if you are a target competition shooter who does not worry about jamming a bullet:

.010 into (touching) the lands (jam) 6 rounds
.040 off the lands (jump) 6 rounds
.080 off the lands (jump) 6 rounds
.120 off the lands (jump) 6 rounds

Load 24 rounds at the following COAL if you are a hunter (pulling a bullet out of the case with your rifling while in the field can be a hunt ending event which must be avoided) or a competition shooter who worries about pulling a bullet during a match:

.010 off the lands (jump) 6 rounds
.050 off the lands (jump) 6 rounds
.090 off the lands (jump) 6 rounds
.130 off the lands (jump) 6 rounds

Shoot 2 (separate) 3 shot groups in fair conditions to see how they group. The remarkable reality of this test is that one of these 4 COALs will outperform the other three by a considerable margin. Once you know which one of these 4 COAL shoots best then you can tweak the COAL +/- .002 or .005. Taking the time to set this test up will pay off when you find that your rifle is capable of shooting the VLD bullets very well (even at 100 yards).

Regards,
Eric Stecker
Master Bulletsmith

the hole article http://www.bergerbullets.com/vld-making-shoot/

With vld secant ogive pills I have always started at 0.010" jam and worked back and forth in 0.005" steps.

I know jumping Vlds works also but I have always found it easy and convenient to simply jam them in and then work up a load .

JH