Why were men with rifles able to slaughter large numbers of musk oxen?

Men with rifles were able to slaughter large numbers of musk oxen due to the combination of advanced firearm technology and the animals' limited ability to evade hunters. Unlike traditional hunting methods that relied on skill and stealth, rifles allowed hunters to engage from a distance, significantly increasing their effectiveness. Additionally, musk oxen tend to form large herds and display defensive behavior, which made them vulnerable during hunts. This combination of factors led to significant population declines in certain areas.