Thread: How hot?

We all know how hard it is to get lapua case head brass to leave ejector marks tho. That brass looks to only have the 1 ejector mark on it, so if it was fired 6-7 times maybe the fireform load did it?

Originally Posted by L.R

We all know how hard it is to get lapua case head brass to leave ejector marks tho.

Have definately done it during load development in my own 260 with Lapua .243 brass though. The load was fine if the barrel didn't get too hot and I dropped down as soon as i got a sticky bolt lift with it.

Originally Posted by L.R

That brass looks to only have the 1 ejector mark on it, so if it was fired 6-7 times maybe the fireform load did it?

The fireforming comment is smart. When fireforming i always set the projectile so that when chambered it is hard into the lands. This forces the base of the case hard against the bolt. Maybe if this wasn't done you could get an ejector mark as the case expands in the chamber back toward the bolt face?