I shot with a fella today that was shooting a 22dasher. we were shooting out to 400 yards in a modified varmint for score match. He claims that the 22dasher is a great 600 yard chambering. I wouldnt know to be honest. I just would think that a 22BR would do just about as much as the 22dasher but there again i wouldnt know. How much velo gain do you get with the dasher over the BR with an 80gr berger bullet? Would inherit accuracy be a tad bit better with the 22br over the dasher? I dont want one or anything i was just wondering about this. If i were to do something like that for 600 yard shooting i think i would go with a 22x47L . Just curious if anyone here has both of these chamberings, and whats your opinion. I know i dont see to many 22cal chamberings in the equipment lists. Lee