Thanks for the informtive article NitroX. I borrowed the much touted book by Graeme Wright which is well summarised by you, I took detailed notes which align with your advice.

I am at an early stage getting in sync with my Merkel 140 9.3x74. The rifle was regulated with 247gn Cone Point which are unavailable as are most non monolithic bullets near this weight, however Woodleigh might save me soon with some 250gn, I am presently guarding a small quantity of these. As a 9.3x62 fan I know what the 9.3x74 cartridge will do.

My focus is to practically duplicate the regulation ammunition for most of my shooting (pigs)whilst also achieving a workable 286gn load for heavier game. I think this means I have to get the 286gn load as close a possible velocity wise to the 247gn cone point factory spec of 2450fps. Current testing using AR2209 with the 270gn Speer seems to be confirming this assumption. I believe my chronograph will be critical as I get closer.

Present data collected:

Factory 286gn approx 2250fps LB 2.75" left & RB 2.5" right at 50m
Handload 270gn Speer approx 2350fps LB 1.5" left & RB 1.75" right at 50m this load shot much better than a 270gn load at approx 2260fps.

The elevation seeems to be working in reverse to single barrel rifles as the velocity increases the load shoots lower. The elevation is not a concern for me presently as it not moving greatly & I have adjustment on my front sight.

Thanks again for the advice.