Re: Getting the Best Precision and Accuracy from Berger VLD bullets in Your Rifle
I am about to put together some rounds for my M700P - .308 BR using the Berger 155 gr VLD J4 Jacketed match grade PN# 308155V. I have never used this bullet in any rifle so I could use the advise from someone who has. Maybe you have a better way to approach this.
My question is should I start with it jammed to the lands as you suggest and here's why I ask?
I will be using two powders in this work up, Varget & IMR4007ssc that consist of 25 rounds for each powder using CCI BR2 primers & Federal GM match cases. That is 5 rounds for each 5 gr increment from min to max.
I guess my problem is I'm just afraid I will miss the better powder if it's not seated correctly. One powder may work better if it's seating say .020 off the lands where the other may like it jammed. Should I start out jamming them and take the best group from "both powders" and then mess with the seating depth?
I think this makes sense! Actually it sounds like I should be doing it this way with any bullet / powder combo I'm working a load up for. I guess I have been just plain lucky all this time and never had to. I would just find the powder that gave me the best group and work the seating depth from there. I wouldn't even consider the other powders in the work up and try changing the seating depth to see if it would improve, I would just drop them from the work up all together.
Hope this makes sense!
NRA life Member
US Army 79 - 85, 368th Combat Battalion, Sarget Spec-5, Combat Engineer
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