Home Forums Reloading Big Game Rifles Anyone know how much more capacity a 280 has over a 270?

I'm curious if anyone has measured, or done any math comparing the internal case capacity difference between the 270 Win and the standard 280 Rem? I assume it is slightly more because of the 280 shoulder being farther forward, but wonder what percent it really adds.

PS I realize the shoulder was moved forward to prevent the 280 from chambering in a 270 rifle.

Mark in GA

.9 grs H2O according to quick load

So, the 280 has 0.9 grs more water capacity than the 270 according to QuickLoad. What does QuickLoad list for the total water capacities of both the 280 Rem and the 270 Win? I would like to know that for future reference.

Thanks a bunch,
Mark in GA

According to the 2nd edition of "Modern Reloading" the 270 has a capacity of 4.24cc's and the 280 has 4.39cc's.

67gr of water for the .270 and 67.9 for the .280 according to QL.