My winter project this year will be reloading the 280 AI. I think it will be a well balanced cartridge to load for. Just picked up a savage LRH and will be working on load development this winter. im not sure what speeds to expect, but i am thinking about 162 eldxs or 175 EOL. My first thought on powder is h4831 or h1000... not sure. Id love to hear from those who have put in some time with this cartridge to give me a good start. what im trying to accomplish with this rifle is to shoot high bc bullets at about 2850 to 2950 fps and thread the needle. Thanks.