Thank you for the useful info ,I used a 300gr Aframe out of my Chapuis double on eland and sable. The eland was a solid broadside through the shoulder heart lungs and the scapula on the far side was sitting under the skin on the far side. The bull went 10 yards and down. The sable was quartering away broke the far side shoulder on it way out. The 286 and 300 Aframes regulate within 15 fps of each other on my double. used the 285gr CEB solids as I coulen't get a load to work well with the 300 gr hornaday solids in my rifle. Years ago I got a great deal on 300gr aframes and have standardized on them. the 286 penetrated well on kudu and waterbuck. Saw no real difference on plains game 286 vs 300. For me it was basic logistics.
Thank you, I will experimentHello LP67, The Ruger you in my photo is a 9.3x74R. I tried all bullet weights and found the traditional 286gr., to give the best penetration, accuracy and stopping power. When I used the 300gr. Hornady DGX I gave up too much velocity and could not get them to shoot as accurately. My 2 favorite bullets for big animals 286grain Nosler Partitions and Solids. I used the Partition to anchor the Bison at 170 yards.
I also used the Speer 270grain on numerous Elk and bears with very good results. The Speer 270 is great on Deer too. A much under rated bullet in my opinion. Excellent Accuracy too!