ORIGINAL: salty

last night I was only able to squeeze in a few shots at a 25 yard target. I had my scope taken off of my gun and then bore sighted it. I shot about 15 rounds at the 25 yd target with my 300 win mag using the 165 grain hornady's before I got a nice 4 shot group in the bulls eye.I ran out of daylight to get any kind of shots at the 100 yard target. My question is if I am hitting the bull at 25 where can I expect to be at say 50, 100 then 200? Any help is appreciated. I am no specialist when it comes to this stuff.