Thank you Sir for noted ballistic file....I have a ballistics file that I built over the past 10 years that allows one to buy ammo online, but since you live in Europe, I think that this would not be allowed. Besides, I think that all the ammo links are US sources. But if you would like to see it just the same, and to learn about the relative ammo power, I can send it to you. It is a PDF file, and I have 35 handgun calibers (including your .44 Mag), and 25 rifle ones in this list. There are over 3,000 links to online ammo sources. Also, I have been to Dubrovnik!
This file and amount of info in it are just amazing! 170 pages of line after line of data, text and pictures. I had never seen anything even close to this. First time I opened it I said this must be years of long, hard work. Well, I learned later that it took Vlavalle 9-10 years to collect all data and make this file. Highly recommended!