>>63916091
14.5x114mm in any form is powerful enough to instantly incapacitate and kill a human if hit anywhere near centre mass, even getting shot in the arm would probably result in you dieing unless you were rushed to the ER. Even 5.56 will kill pretty good. A 14.5 from a long barrel has at least the same velocity as 55gr 5.56 from a 20" barrel, but the bullet weight is 18x greater. Sabot means more velocity but lower caliber and bullet weight. A saboted 14.5 wouldnt really work with current tech. They are just too inaccurate to be practical and saboted small arms projectiles as a whole never took off due to a myriad of problems.
From the sorts of black powder guns that fire a minie ball, the lethal capability is still no slouch. Its still a hefty projectile traveling at a decent speed. Check out capandball on youtube for info on minie projectiles

>>63886030
14.5mm Anti-materiel rifle
800m effective range
Ammunition types: Soft point, FMJ, AP, AP-T, API, API-T, APHEI-T
AP bullet capable of penetrating BTR, BMP, BMD, Gavin, Bradley (monkey model and from the rear side) (Source: war thunder)