Re: .280 ackley
4ked horn,..I too would built mine the same as it is right now. They really come to life with a heavy 28" tube. The damn caliber seems to be just plain accurate, nomatter what load you use. I got 1/2" groups while fireforming brass!!!
If you need a carry gun,..then perhaps 26" is a better length,..but if you are hunting off the bags or bi-pod,..then stick with 28".
everything I have to say about the caliber is positive.
You try to get closer to the target,..and I keep trying to get further away.