JSB Knock Outs 10gr .177

Spent the morning at my range office sounds funny but its work for me, Luckily I enjoy what I do!

Retuned the wildcat to the 10.03gr Knock out slugs.
I couldn't get the extreme spread lower then 4, but I think I'm trying to chase perfection and one hole groups.
Should be happy with what I achieved, because I guess its not bad at all.
Got the group down to 5.5mm center to center, and almost a one hole group.
Time to find some more bunnies and continue testing.
Next question is, down to what velocity will they still mushroom...?

One reason i asked is the two different slugs have 2 very different M codes.....

Ja, maybe JSB pack their tins according to weight?
Heavier projectiles are larger and come in 400 per tin, it is also a slightly taller tin, more space inside.
Guess they cant get 500 of the bigger slugs into the smaller tin.

There is also a price difference, the 10gr/500 tins are $43/tin and the 13.43gr/400 tins are $39 per tin.
Works out to 8.6c each for the 10grainers and 9.8c each for the 13grainers, got to pay a bit more for those extra 3.4grains