Bob,
I guess I need to make this clear, there is NO discontent here. Grasshopper will have to speak for himself!

The ONLY point I am trying to make, and you can throw the data in the trash, is that we need to UNDERSTAND, not that pressure increases with seating depth but that seating depth is more important than OAL!


The reason that we have watered down data is because people need to be protected from their ignorance!

Can I run a load under minimum? Yep, if I have a deeper seating depth! Cartridge OAL be hanged!

Can I run a load over maximum? Hang on, YES, and Elmer based his whole loading of the 44spl on this, if I have a shallower seating depth, OAL be hanged.

Now, I am done.

I have some old 7mm Mag we loaded in Norma brass before DuPont sold out to IMR. They have been chambered many times and maybe were in the magazine when another round was shot. The OAL isn't what it used to be, even though nothing has changed except the nose of the bullet.

So, OAL really doesn't have much meaning in the real world, but as Skip said, seating depth is very much meaningful in the real world!

Seating depth is pretty easy to determine. Just make a mark (Marks-a-Lot or scribe) close to the nose of the bullet and measure from the mark to the base. Seat the bullet and measure from the mark to the case mouth. The difference is the seating depth.

Master:
This rice paper is the test, clean as the cocoon of the silk worm, fragile as the wings of the dragon fly. When you can walk its length and leave no trace, you will have learned.”

Grasshopper bows

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Still Running Against the Wind

Well Skip, I actually found that old 7mm Mag load in Lyman 44th edition. So, it really isn't an overload and it really does shoot good! Handloads.Com Forum: Reloader 21