Slugs in a springer break barrel

Tested Griffin slugs in .217 and .218 in a Lothar walther choked barrel specs are for that barrel .215 lands and .221 groove ..217 is too loose and shotgun ...218 fit better but are inconsistent...Conclusion...stick with a decent pellet that has a skirt that engages the grooves..Barracuda 18.52 are Lazer accuracy for the lothar walther barrels..in .22 magnum springers..spent 8 hours in the field today testing the slugs weights from 16 grain to 20 and they do not group like pellets do .went on a light hunt after testing and switched to the barracuda at 18 grain and hit 4 squirrels at 50 and 65 ...The jury is out slugs are a waste of money to accurately shoot out of a springer. back to R&D to make a slug that can shoot minute of squirrel at any range ..
 
They are a German made barrels but not LW!
8 grooves compared to 12 in most LW airgun barrels !
For a short while they even had 12 groove china barrels but realized there mistake and went back to German sourced barrels!

And as far as slugs go if really want to shoot them you have to try a bunch of different brands... All have subtle differences and have to find the one your barrel likes!