Ok, on a serious note, here's my 2 cents. As we know, the sled itself (if set up properly) is supposed to disipate 95% of the kenetic energy of the fired round, thus greatly reducing perceived recoil. If done so properly, upon firing, energy disipates through the stock to the sled, through the bench and into the ground. I believe most any issues that arise may come from NOT having the sled properly weighted. It is supposed to be "anchored" with 40 to 50 pounds of weight - usually lead shot in a weight bag. The newer models by Caldwell include a weight bag.
What I have seen at the range is that alot of folks either don't "weight" their sleds or don't weight them enough. As far as killing scopes (and I said that tongue in cheek) What usually kills scopes is not mounting them correctly... especially if over torqued. The sled itself is not so much the culprit, however, I can see where it might change some points of energy disipation and may hasten the process.
These are only my own observations and definately non-scientific by any means. I don't care for them as they are heavy, bulky and just more stuff to tweak before getting down to business. My simplistic view is that if the sled is set up properly and a shooter is having problems grouping there are other issues at hand.
What I have seen at the range is that alot of folks either don't "weight" their sleds or don't weight them enough. As far as killing scopes (and I said that tongue in cheek) What usually kills scopes is not mounting them correctly... especially if over torqued. The sled itself is not so much the culprit, however, I can see where it might change some points of energy disipation and may hasten the process.
These are only my own observations and definately non-scientific by any means. I don't care for them as they are heavy, bulky and just more stuff to tweak before getting down to business. My simplistic view is that if the sled is set up properly and a shooter is having problems grouping there are other issues at hand.