I have taken 6 deer or so with the .260 using 120 gr nosler ballistic tip hunting bullets. Only one deer needed a second shot, not sure if it was a need, but I felt like I made the error and pulled it.
I have shot 3 deer with the 6mm arc now using hornady 103 gr ELD-X. The last 2 of those deer I shot twice because the first deer I shot once I almost didn’t find because the bullet hit a rib and fragmented enough that it didn’t exit. Though the lungs were mush, it was still able to go a lot farther than I want. Sure enough, two more bullets didn’t exit, one on each of the other two deer.
I was so upset with the first deer I looked into hornady’s ELD-X and they have actually stated officially in videos that it is mad to dump its energy very quickly causing a lot of internal damage, but is often found just under the skin on the far side of the animal. Your basic cup core bullets that only hold like half their mass after impact. With the steep and sometimes thick (due to a swampy area in the valley I hunt) I want a good exit wound spurting blood if that animal doesn’t drop immediately.
So I don’t think the 6mm ARC is lacking in capability, I think it is lacking in good hunting bullets that will hold 90% or more of their mass and creat a full pass through almost every time. I want to try loading 95 gr barnes LRX and try them. Even my .260 Remington I am going away from cup core bullets. I just bought 200 rounds of nosler 129 gr accubond long range, which are bonded bullets and should give me a lot better terminal performance.
moral of the story; i believe if you hunt deer and similar animals with anything, whether it is .223 or .30-06, you are better off using a bullet that will maintain as much weight as possible and give you that exit wound which will leak a nice blood trail and lower the animal’s blood pressure quickly.
sorry for the rant, hope you guys stuck with me though 😉