6MMBR SIERRA 107 COAL

[ANDY T]

Hi
I have been doing some research on 6mmbr and what people set there Sierra 107g bullet heads to and have found that there is a lot of difference what in your opinion is the best and why, please give your reply with COAL not ogive.
Here are some of the COAL,s i have found, from 2210 to 2444
Andy

COAL 2210 COAL 2375 COAL 2385 COAL 2250
COAL 2444 COAL 2275 COAL 2350

 

[spclark]

What cartridge? Who's reamer used to chamber the barrel? Seated into the lands or well off?

Eve if you're only talking about a 6BR cartridge, there are many potential COAL's depending on how a given chamber is throated - the distance from where the neck begins on the case to where the bullet first encounters the rifling, or leade.

Every rifle will be a little different unless you're comparing two (or more) rifles all built by the same gunsmith.

I assume you're not asking about COAL for loads to be fed from a magazine? That adds another level of complexity depending on just what rifle action / magazine you're asking about.

You need to give more details before anyone can answer your questions with confidence....

 

[fdshuster]

Ditto what spclark said: Cartridge over-all-length is a meaningless number. Completely dependent on the throat depth of each individual rifle. As an example, I have several rifles, of the same cartridge (6BR) that have freebore dimensions from zero to .107", that will have over-all-length differences of ???? .107". The dimension that most of us are concerned with is the length to the point on the bullets ogive where it contacts the lands in the throat. Now, that number has a whole lot of meaning.