Pilgrim
I have been using a 9,3x74R Chapuis for several years including 3 Safaris to Africa.
I have taken Giraffe, Buff and Elephant with the 9,3, as well as all manner of plains game, deer pigs, black bear, bobcat, coyotes etc.

One of our Aussie members had his Chapuis break the solder between the bbls by shooting Barnes bullets in his Chapuis, twice.
The Chapuis factory told him to stop doing it.

I would not shoot them in mine.

I can recommend 4 bullets for use in the Chapuis 9,3

The 286gr Nosler Partition has done very well on game up to and including zebra.

The 286gr. Woodleigh Soft is my favorite soft for the 9,3.
I have taken game from turkey, and deer, to zebra and cape buff.

It is a good bullet that can do it all.

For a solid I recommend the 286gr Woodleigh.
I have used it on turkeys, caracal, [where I do not want to damage meat or hide] and on giraffe and elephant.

For a cheap practice bullet, perfectly good for deer sized game try the 270 Speer.
I have killed deer and pigs, one pig weighed @ 300 lbs, with this bullet.

Go to www.accuratereloading.com and research some of my posts.

I think the Chapuis 9,3x74R double, with scope in QD mounts, is one of the best hunting rifles on the planet.