I have had great luck with lapua and Norma brass. I did get a box of hornady brass new when I purchased my rifle. All I did was a partial full length size on them, more of a neck size as I have done my entire time loading new brass. I had a couple that didn’t fire. This was my first experience with a fail to fire. I checked them, and the shoulder was way back on them and I seated bullet to touch lands and basically fire formed them. No problem with them since then, and accuracy was great with all 3 brands. Having said all that, I would stick with Norma and lapua, it’s worth every penny over hornady. I have used 250accubonds on coyotes and whitetail deer, and they worked well. I decided with the quick expansion I saw on those animals that I wanted a heavier and tougher bullet when I went to Africa last year. I took 286 aframes, 286 partitions, and a lighter load for my son to use 232 Norma oryx. I used aframes on waterbuck first because it was just a great opportunity while after an Eland, at an absolutely huge waterbuck so I took it. There was not much tracking involved complete pass thru as expected. It went 30yds yards. Eland first two shots were way back and third shot took out heart. It was a running eland with all 3 shots over 200 yards. Bullets recovered and they mushroomed out perfectly. The heart was absolutely shredded on last shot, it was crazy the damage the aframe caused. After that I stuck with aframes on blue wildebeest and nyala, and was not disappointed. My son took a huge blue wildebeest with 232oyrx and I was very impressed with that bullet as well. We only recovered one of those. The 232 oryx also laid out a warthog as you could imagine. This year in my 9.3x74 I shot one coyote with a lapua mega 285 grain bullet, and I wouldn’t hesitate to use it on plains game. I have the 286 bullets in my 9.3x62 going over 2400fps using big game.