New keg of powder= new test???

[chuckw2]

Guys,

I buy my powder in 8lb. kegs most of the time. I use Varget, H-4350, and N160, among others .

Is it safe to assume that you are going to run the same pressures from one canister of powder to the next or do you guys do pressure test again when you start loading with a new keg of powder?

Chuck

 

[Hipshot]

If my loads are anywhere near hot I always check a new lot of powder by starting with lower weight and working up. Powder lots do change characteristics.

 

[JeffT]

I check my loads with every new jug of powder, about 2 or 3 years ago I got a new jug of H4831sc and the velocity was about 200 fps slow with the new powder, same year I got a new jug of RL22 and it was about 75-100 fps fast with very high pressure.


Jeff

 

[chuckw2]

Jeff and Hipshot,

Thank you so much for the heads up. I do not want to load anything that could be remotely unsafe.

Chuck

 

[jb1000br]

Chuck -- definately!

I'll take 5-10rds loaded with old powder and load up 3-round groups with incrementally less and more of the new lot of powder,.3gn increments)

chrono, and/or paper at 500yds to check vel's and similar POI's

shoot the old load for a benchmark, POI and vels

then shoot the 3-shot groups starting at the low charge seeing which vels and POI's overlap

CHeers,
Jason