Most cartridge designers try for one caliber seating depth. These benchresters, though, routinely seat out to less than that. Be aware that the farther out you seat the bullet, the more fragile the whole bullet-to-cartridge neck interface becomes. Out beyond a half caliber depth, some caliber bullets can be pushed over with finger pressure, depending on neck tension.
Benchresters have been known to use very slight neck tension deliberately, so that on chambering a round, the bullet contacts the rifling and easily slides back into the neck on bolt rotation. A round assembled in this manner can come apart if chambered, not fired, then ejected. So remember, the benchresters need to know what you're going to use the rifle for, if you ask them for advice. Without telling them that, they might give a benchrest answer you may not be able to live with.
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