I have a FN mauser in 7mm mag and will be rebarreling to a 6.5 Rem Mag. I have heard discussion of putting a "block" in the box, please enlighten me on this. I have another 98 mauser that has the bolt face opened and chambered in 6.5 rem mag. i see no sort of length modification of the box, feed rails were probably worked on a bit but everything else appears the same.
