JTS 18gr vs JSB 20.83gr KO slugs

Nice timing, I just started looking for info on this slug, and I didn't even remember posting a like when you started the thread. Just yesterday I started using the MK3 .177 10.03gr KO and I want to try their .22 in my Barra 250z now. Are you shooting the .216 diameter? I had thought that was all they were going to offer and it seemed too small to me, so I hadn't even considered it. That is, until yesterday, wow, these things blow up easily. I am going to have to try every caliber available, super impressive.
I'll check the size on them in the morning. Tin says .216 but if I'm not mistaken they were around .217 on my calipers.
 
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