22gr Velocity test, how slow can they go?

Doing some slow testing with leight weight slugs to establish if they will group at lower speeds, shooting the brand new Unknown Slugs in 22gr, FX Hybrid slugs in 22gr and H&N in 21gr. You will be as surprised as I was... Latest tests: Superior Heavy Slug Liner & JSB KO’s    • Superior Heavy Liner and JSB   Unknown Slugs 1st review    • New entrant into slug market, first review...   High Power 177 Part 3 30ftlb    • High power 177 20ftlb to 30ftlb with 500mm...   High Power 177 Part 2    • High power 177 Part 2 Is there place for H...   High Power 177 Part I    • High Power 177 Part I - Yes or no? Is ther...   500mm versus 600mm barrel    • Does barrel length make a speed difference   Copper versus lead 60m test    • Lead versus Copper 60m test   Bent skirts:    • Bent Skirts on pellets, how is accuracy ef...   JSB Polymag test    • Polymag testing at different speeds, 30m a...   Copper versus lead versus lead free    • Copper versus lead versus lead free pellet...   H&N 25gr slugs optimal speed    • H&N 25gr Optimal Speed at 100m   H&N 27gr slugs optimal Speed    • H&N 27gr Optimal speed 50m and 100m   H&N 30gr slugs optimal speed    • H&N 30gr slugs optimal speed   Hunting pellets .22 at 60m test    • Hunting pellets 60m test in .22 (5.5mm) H&...   High Power pellet test .22 60m    • High power pellet test 5.5mm .22