Still confused on 243 win Sammi "throating"

[Shawnba67]

So what freebore would it take in any other 6mm to put a bullet into the rifling at the same length as it would in a Sammi 243 chamber? ( trying to find the freebore equivalent for the standard 243)

 

[Shawnba67]

If some one had an oal or to ogive length number for a 105 or other bullet I could extrapolate an answer also thanks

 

[243winxb]

Throat leade- .1774" ? ??
SAAMI chamber for 243 Win.
The taper could be made shorter or longer.
See SAAMI. Head to ogive looks like 2.259" ?? My guess??

http://www.saami.org/specifications_and_information/index.cfm?page=CC

I dont think its a true throat or leade, (freebore) as its all a taper to the rifling.

Do get more opinions. Done edit.

 

[Eric Leonard]

I had my smith do my 243 bbl where the 105 VLDH bullet would be seated with the boattail/bearing surface junction just ahead of the neck shoulder junction and the COAL worked out to 2.860,,

it shoots lights out and leaves enough powder space to get above 3200 fps with H4350 from 28 inch bbl,,

 

[Shawnba67]

Thanks much