Originally Posted By: bavarianbrit
I have a very similar gun, just a little less engraving and get 2.5 inch group of two shots using Brenneke slug loads.

Hello bavarianbrit
Thanks for the reply

Here's the results from the last testing. I tested 5 different wad / card / bullet combinations. Groups measured 2-1/4" to 7" at 50 yards. Here's the best combination tested. Apparently this gun prefers a little harder bullet of 15:1 alloy, (BHN 11) and the heavier 790g Round Nose as compared to the 730g Hollow Point.

I'll be testing this load formula again with both HP and RN bullets to make sure the results are repeatable.

"You never pay too much for something, you only buy it too early"