In theory, you'd be able to drive the 135 faster than the 140, however. Even if the BCs come out the same, speed wins.A 7mm would interest me but looking at the 6.5s, the 135 doesn't seem to offer any BC improvement over the 140 ELD-M and the 153 is barely ahead of the 147 ELD-M.
Maybe consistency is the selling point?
The .30s do sound good but the chambering, brakes and cost involved make me not want to try them.
I doubt the 153 is being aimed at the standard capacity 6.5 cartridges. The 135 seems better slotted for that, IMO, while still being able to be driven fast in a SAUM, etc.thats where the 153 confuses me besides for the 6.5 PRC/SAUM/SS/SST etc
153 over 147. 1% BC increase. 4% weight increase
140 over 135. 1% BC increase. 4% weight increase
I think that's a fair assessment. The two I'd consider for PRS are the 110 6mm and the 135 6.5mm. You can run the numbers and balance it out yourself, but the 135 offers the 140's BC, tighter spreads, and faster speeds than either the 140 or 147 with less recoil. They all work. It's which numbers/results matter to you.Consistency might be the thing for ELR shooting and maybe worth the price but most shooting isn't ELR...