I am wondering why the velocity is kept so low by prvi .I use Finn Aagaards old 7x57 load of 49 grains 4350 powder with a 140 Nosler or Hornady Interlock @ 2,925 FPS in both my 275 Rigby and my ZKK 7x57 Brno .No signs of high pressure at all .My factory Lapua 173 ammo is almost 2,600 in both rifles .A 140 Nosler 7x57 will break both shoulders of an elk at 275.I also have a friend who hunts elk with a custom 7x57 every year .He uses the same bullet the 139/140 Hornady Interlock (the old type) One shot kills every year