Re: Chamber depth for cartridge
Chamber depth has nothing to do with where a bullet is seated buddy.
Maybe I'm misunderstanding the vocabulary choice your using.
Chamber depth, in my mind, implies "headspace" The distance from the datum line on the shoulder of the cartridge to the back of the case head. This is never going to change no matter what bullet you use or how long or short its seated.
Seating depth on bullets has to do with throat length and the physical size of the projectile itself. A long skinny 105 grain "lawn dart" type 6mm bullet is going to require a significantly longer throat than a 60 grain flat base bench rest type bullet. (If you want to realize the potential of the cartridge it will.)
"Cartridge Length" may be the better choice as this encompasses the whole thing. A guy still needs to be a little careful though because VLD type bullets have a much more "aggressive" looking ogive than say a 107 Sierra MK. That'll require the throat length to be slightly different.
I would strongly encourage you to load up one or two sample cases with the bullet seated to the depth you want to run. Send these to either a reamer maker (David Kiff, owner of Pacific Tool and Gauge is excellent) or your gunsmith and have the tool built off the sample. It's a very common thing to have done.
The alternative being the barrel is chambered and then chased with a throating reamer afterward.
Heavier bullets are going to require being spun harder in order to stabilize also. Generally anything heavy in 6mm and 6.5mm requires a 1-8ROT on the barrel. Best bet is to consult with the barrel maker while placing the order.
Hope this helped.
Last edited by NesikaChad; 08-17-2008 at 04:07 AM.