I am using Varget powder for trying out loads for my POF 308 with Sierra 168gr MK bullets. I was thinking of starting at 41gr of powder, is that too high or too low to start with?
Posted: 4/3/2010 10:51:06 AM EDT
[#1]
Page 538 Sierra Manual Start for Varget is 38.7gr, 2400fps. 40.3gr, 2500fps. 41.9gr, 2600fps. 4.5gr, 2700fps. Listed are for #2200 168gr MKHPBT. C.O.A.L. 2.800".
Posted: 4/3/2010 3:37:08 PM EDT
[#2]
I have the sierra book but that is for bolt guns right? My POF 308 is a auto loader gas piston upper.... Or should I use these as the starting guidelines?
Posted: 4/3/2010 4:10:33 PM EDT
[#3]
start at the lower end of the load data and find the load your rifle likes, I usually work in 1/10 grain increments after finding the most accurate 1/2 grain increment, groups of 5...it's so worth it.
Posted: 4/5/2010 10:12:17 AM EDT
[#4]
A good starting point is for your bullet to between 2500-2550 fps.
A gas gun should not have loads as hot as a bolt gun.
I would not go over 2550 fps with 168/175 grain bullets.
