Thread: 6.5 PRC Load Development Begins

Originally Posted by matto1234

I went out today and had average results, the chronograph didnt like rain. Shooting the 156berger over 60.4gr of h1000 gave 3060fps with average bolt lift, 60.6 had severe ejector marks on one case,heavy bolt lift and second case even lost its primer on ejection.

I think ill be loading up at 60.3 and playing with seating depths, should end up around 3050fps for the 156 which is plenty!

So you had slightly heavy bolt at 60.4gn and you think .1gn lighter will be a good load ?...... the fact you had severe ejector stamping, heavy bolt lift and the primer fall out at 60.6gn suggests to me you are fizzingly hot and really should be a full grain lower at least. You don't want to be right on the verge of pressure as on a hot day you could still be asking for trouble.
Possible issues include the action or bolt suffering catastrophic failure (right next to your face)
You will trash your very expensive and hard to obtain brass in very quick order either by case head seperation or by flogging out the primer pockets.
Seriously you might lose 100fps but what difference will that make ? How far out do you need to shoot this ? If 100fps is a game changer maybe you have the wrong caliber.
I used to be like this trying to squeeze every last fps out of my wsm calibers but in reality it just fucks things quicker and in some situations is down right dangerous.
That's my 2 cents, no more lectures promise no hate just genuine concern