What caused the Rokslide shift to smallest caliber and cartridges?

[nm.otter]

You read it here first: 6.5 CM is actually a modern-day boomer.

 

[huntnful]

I've gunned down a decent bit, and I've been enjoying the testing of the smaller cartridges and bullets. The right bullet for a given caliber just kills. You may not get the most dramatic effect on impact, or you might be surprised by a DRT. But at the end of the day, a 3" hole through the lungs is devastating.