Gunsmithing freebore/throat question

[Codeman89]

Does anyone know the saami standard freebore length for 243 win? I have tried looking on Saami diagrams and I am not having any luck finding it.

Thanks in advance

 

[Edds]

The reason you can't find it on the diagram is because it doesn't have any straight freebore. It has a funnel shaped throat. The 270 and 300 Winchester also have this style throat. If you want straight freebore, you will need a non-SAAMI reamer.

 

[Codeman89]

thanks that makes sense

 

[TC308]

[No message]