chamber depth?

[sgt_murf]

To backup Sniper20's comments. Each manufactuer uses a differant ogive (radius, that varies from manufactuer and bullet weight/type ie pro-hunter/ Serria Match King) on the bullet points this will contact the throat grooves for each bullet differantly. So as Sniper advised a Comparator works wonders, once you get the correct setting for your Rifle annotate the Length. Or use dummy rounds to set up your dies for each differant type of bullet for your seating dies. Some Type such as the JLKs VLDs seem to like a 0.010" jump before contact the lands and grooves in the throat some like to be within 0.001" or less from the lands the bullet design vs the compound throat that AA uses will dictate which. For pressure it is "usually" best to be around 0.005" away is what some will advise, some say a bit further, bottom line is to set the bullet to where it shoots best for your Rifle and go for it. The word of caution here is if it is engaging (or touching) the lands when chambered the pressure will be higher even with a reduced loading.
LR1955, sniper,bwaites, or someone else interject if I have made a incorrect typo or statement here please.
Good luck and best wishes, with your new barrel