6.5x25mm CBJ: Shooting Through an APC with a Glock?

this is so fucking interesting

• I didn’t realize that sabot rounds could be so unpredictable and prone to accuracy problems but it totally makes sense
• I didn’t realize that a sabot breaking into multiple pieces could be a problem but that makes sense too
• now I get why sabot rounds aren’t usually a thing
• also I didn’t realize just how important a bullet’s diameter was for its armor-piercing capabilities
• the concept of a pistol round that bottlenecks to a completely different diameter, but you can fire it with a normal 9mm Glock just by changing out the barrel omg
• how does that even work? like how is there no wiggle room for the round in the chamber? I guess the part of the round that’s skinnier (the bullet + sabot and the little skinny bit of casing that sticks out) all goes inside the breech?
• also now it makes more sense to me why the FN 5.7 round bottlenecks, and why bottlenecking is a thing in general