I'm in the process of working up a load using Hornady .308 150 grain SSTs. I also have some Hornady Superformance 150 grain SST factory cartridges.
I've done the measurements and the factory loaded bullets are seated 0.152" off the lands. They're seated down to the crimp ring. The COL is 2.742".
I'd like to reduce this jump to 0.070" which will give me a COL of 2.825" I've checked visually and it looks like this length will fit in the rifle magazine. I'll seat some bullets tomorrow and confirm this.
However, the Hornady Handbook states a COL with this bullet of 2.735". Most other data sources (i.e. Nosler website for a jacketed 150gr BT) show a COL of 2.8".
My questions are:
1. Assuming the rounds fit in the magazine, will exceeding the COL stated in the Hornady Handbook and elsewhere present any problems?
2. Should these bullets be seated down to the crimp ring?