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Vmax vs psp bullets
- Thread starter fuel80guy
- Start date
The psp is probably seating deeper because the curve of its bullet hits the seating die sooner than the Vmax bullet. The seating die does not always push the bullet in by bullet point contact. For instance a round nose bullet will probably seat even deeper because the die contact point will be closer to the bottom of the seating die.
There are others who can explain it more precisely with the correct terms and they will probably chime in shortly.
There are others who can explain it more precisely with the correct terms and they will probably chime in shortly.
Since the shape of the bullets is different, the seating depth is often different. If you want to know the distance to the lands with a given bullet, you need to determine that distance with each and every bullet that you intend to use.
I determine the Max COL for each bullet that I shoot. I do it by making a fake round without powder or primer and a loose neck and load it into my gun. I then know the max COL for that bullet and I record it in my reloading records for later use. If I decide to try a different type of bullet I redo the process. Two different bullets may have the same COl but will require an adjustment of the seating die.
If I were you at this point I would either look up in a reloading manual to find the recomended COL for the PSP or I would use some type of method like I do to determine what your max COL is. I am assuming you are working up a load. If that is the case you should not be changing you COL at the same time as you are adjusting your powder load. Figuring my COL is the first thing I do before I start reloading. Then I work up a load with the bullet seated .005 to .01 off the lands.
Hope this helps. G
If I were you at this point I would either look up in a reloading manual to find the recomended COL for the PSP or I would use some type of method like I do to determine what your max COL is. I am assuming you are working up a load. If that is the case you should not be changing you COL at the same time as you are adjusting your powder load. Figuring my COL is the first thing I do before I start reloading. Then I work up a load with the bullet seated .005 to .01 off the lands.
Hope this helps. G
