This big work was started in the summer of 2016 and completed in February 2017. I have long wanted to write about it, but for many reasons I put it off. But time passes and the details gradually begin to fade from memory. So now I decided to write something like a small article. I hope that someone will be interested. Эта большая работа была начата летом 2016 года и закончена в феврале 2017г. Давно хотел про нее написать, но по многим причинам откладывал. Но время идет и подробности постепенно начинают стираться из памяти. Так что чтобы опыт даром не пропал - решил написать что-то наподобие небольшой статьи. Надеюсь, что кому-то будет интересно. Historical reference: Sherman tanks that were exported to Chile were seriously upgraded. Changes affected weapons and engine. The previous 75mm gun was replaced with a new development - a 60mm “hyper-speed” gun, which, in terms of armor penetration, exceeded even the 105-mm Patton gun. The velocity of the projectile is 162...