shorthair,
You were right. I only shot two of the TMZ's as it was everything I could do to get them seated. Since I have the TMZ's, I'd like to use them -- do you know what sabot I could swap and have a reasonable fit in the Vortek?
The Vortek did shoot the 250 SST's and 300g XTP's very well. I was extremely pleased with the groups. However!! Only about 1 in every 3-4 musket caps would ignite. I was using a new purchase batch of the RWS No. 1081's with wings. The firing pin was denting the cap, but no cap ignition. Did you experience this at all? Could I have bad caps? Could the hammer not be striking the pin hard enough?