I'm sure a cheap scope could be damaged. However, an older gentleman in our smokeless ml group shot thousands of smokeless ml rounds, testing loads, etc. He went to the range every Tuesday and fired 40 or more. We're talking loads with more than 45 lb of recoil. Pretty close to that of 2 30-06 rifles fired at once. I Never heard him complain of a scope failing. He used the same guns for our spring, fall and snow bird competitions out to 500yds.
Now, his setup was modified. He had 2 pieces of 3/4 plywood laminated together approx the width and length of the sled. He had routered slots for the lead sled feet to sit in and they were elongated to allow 1.5" of reward travel. He used a light film of lubricant in the slots. This allowed the gun and sled to recoil as a unit. He shot very accurately with this setup. Of course , before getting hooked on sml's, he was a life-long benchrest competitor in North Carolina..