In this review of a Les Baer Custom 10mm 1911, the staff of On Target Magazine is way off target if I'm not mistaken. They said the 10mm puts out more than twice the kinetic energy of the .45 ACP. I checked ballistics of both calibers using the same type of bullets from some of the biggest ammo companies. I didn't see more than double the energy from the 10mm with the same type of bullet from the same company.
I saw for example, the 165gr CORBON 45 Auto +P Self-Defense JHPs I have and the 10mm 165gr CORBON Self-Defense JHPs are both listed as 573 ft-lbs. The 10mm 155gr DPX has 496 ft-lbs and the 45 Auto +P 185gr DPX is 475 ft-lbs, giving the 10mm 4.4% greater power. The 45 Auto 160gr DPX,
which isn't +P, has 392 ft-lbs, making the 10mm 26.5% more powerful. Nowhere near 100+%.
I saw similar figures from other ammo makers too. Comparing different types of ammo for different purposes is, unsurprisingly, a different story. When comparing totally different loads, you could say a .44 Magnum is only 5.5% more powerful than a .357 Magnum (.44 Rem Magnum 165gr CORBON Self-Defense JHP vs .357 Magnum 200gr Hard Cast). But comparing the same types of bullets, does anyone make a 10mm load that's more than double the energy of .45 ACP, standard
or +P, that they also make? Or are these guys smoking crack?
https://ontargetmagazine.com/2018/08/les-baer-premier-ii-10mm-5-1911/ 
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