Thread: 130gr TTSX in 16" .308

so lets see if I have this right..better or Dannyb will throws jandels at me.
you are already seating out 89thou more than the book....and rifle has long throat?????

so as Cam says seating longer gives a bigger case capacity=less pressure=less velocity AND your long throat will allow it to jump even further before getting all tight n building pressure so its a weatherby defacto magnum sort of..which ALSO=less pressure and less velocity
my trucksteerer barely passed schoolC brain tells me thats two reasons your velocity is lower than expected or two reasons you would possibly need more powder to achieve same velocity
luckily the humble .308 is sort of designed to have a long "spacewalk " into rifling....