With limited reloading data available, I have a question with regard to Velocity/Pressure and a safe load.
I have been using LiLGun, Hornady 170 SP bullets, CCI 450 primers, and Winchester brass (all I can find). The rifle is a bolt action with a 23" barrel. Chronograph is a Labradar.
Hodgdon data (24" barrel):
- LIL'GUN: starting load @ 25 gr , 2181fps / max load @ 27.9gr , 2307fps
At 24gr of LIL'GUN, one grain below the starting load, my rifle is averaging 2361fps. At 23gr of LIL'GUN, two grains below the starting load, my rifle is averaging 2307 fps.
The 24gr load has been my most accurate with the most consistent velocity spread. When I drop to 23gr, my groups open up and my velocity spreads open up too. My concern is that the 24gr load is on the hot side based on velocity. I can not find any Hornady 170 factory ammo to get a base line for velocity. So, should I keep dropping the powder charge until I find another accurate charge weight or go with the 24gr charge at 2361 fps?
Thanks for the help.
