Originally Posted by Jitterbug
Not Blue Dot...
Without re-reading the posts...I'm assuming you have an after market barrel for shooting lead in your Glock?
Yes, Its a 4.75" KKM I'm using with a g29.
Alliant powder chart only shows a speer GDHP with 11 grains BD as max load at 1295fps so naturally my thought process was to go 10% less to start at which is 10.1 grains and 10% less for lead which would put me at 9.09 grains.
(Unless Hard cast doesn't need to be de-rated 10%? I'm not sure if that is just for soft lead. Any feed back would be appreciated.)