So im trying to load some 120 gr Barnes Tsx rounds for my sons axis compact 7-08

i measure his chamber with Stoney point oal gauge and micrometer with the Tsx and it measures 2.785 in

look in my nosler manual and it states that the max coal for the 7-08 is 2.80 in

measured the chamber oal 6 times just to make sure I wasn't missing something and got the same numbers

I don't get it but I do know that if I were to load to max coal I would probably not be able to close the bolt on this rifle

also Barnes recommends seating the Tsx .050 in off the rifling as a starting point so at 2.785 if I seat them .050 off of that I would have a round that measures 2.735 oal at .070 off that would be 2.715 never seen a round loaded that short so I'm kinda scratching my head a bit anyone have any idea if it's safe to load rounds that short seems like quite a jump to the rifling at .050 still wondering why the chamber oal is shorter than the coal stated in the manual this is kinda puzzling me
anybody have any ideas about what might be going on with it ??

Thanks for for any info
dive6347