Anyone shoot 70gr or 75gr berger

[Gibbo87]

I'm looking to change from 75amax, my aim is to try get my velocity up and Es below 5.

I shoot a factory tikka t3 1-8 20".

Current velocity it's 2820fps Es 10 using viht n135

Lap match

Cci br4

I'm pretty much at max case fill

No pressure signs.

 

I'm looking to work a new load for bergers to be used out to 600.

willing to change powders if there's any suggestions hints or tips on things to try be it different bullets to powders

 

Thanks

Gibbo