I've never been able to get my hands on the 200 grain Shockwaves in my area in a light blue sabot.I have no idea what to tell you, but I am sure there are some on this forum that have shot them. I personally shoot the 250 & 300 grain Shockwaves out of my rifles...

Since you have not tried shooting them, I would at least give them a chance. They might surprise you. I think the blue sabots are made by MMP for that projectile, so it would seem strange that they would not work. Give them a try and if they do not work then give Thompson Center a call at their tech support number and ask them what the problem might be.

Also, if you do decide to try them, let us know how they work. By the way when I load a Barnes 250 grain Expander in my Thompson Center rifle I notice as they are going in the muzzle the sabot has started to flower also. They are extremely accurate. If I were you I'd give them a try and see if they shoot.