RE: Howa or Tikka
I would not say as bad as a 710. The Tikka's are using one action length, however they use different length bolt stops for the various cartridge lengths, so you still only stroke it for the actual length of your cartridge of choice. I don't know from experience, but I have heard that the 710s have a wierd barrel/reciever hookup, whereas the Tikka's have the tradional/desired barrel attachment system. I have two Tikka's, and soon will have a third, so I am somewhat biased, but they do shoot extremely well. My 308 shoots sub MOA with 180 partitions, and my 22-250 shoots sub-sub-sub MOA with 55 Vmaxs.
I think you should buy the rifle that fits your frame/stature the best, and go out and enjoy it!!