I don't see a problem with that load from a Mannlicher.

My Husky Swede 9.3x57 does 2,300fps (23.4" bl.) with less than .001" expansion at the web - and the necks barely expand to release the bullet- no - the necks aren't that tight - and with higher pressure loads, will expand and stay at .001".

I should think 2,400fps to 2,425fps from a 24" would be about right, from a .98 - type action. At 25fps per inch (efficient cases), that works out to 2,300fps to 2,325fps from a 20" bl.

My 9.3x62 runs 2,519fps for 286's from a 22" bl. using BLC2. No other powder comes within 100fps. It also does
2,675fps with 270 Speers - probably a bit much for that bullet.

My 9.3x57 has become my favourite - GRAB rifle for a day hunt. It has 6 rounds on the neoprene stock ctg. fob - 3 with 293gr.TUGs and 3 with 232gr Vulcans. They impact 3 1/2" apart, vertically - perfect!