How do I replicate the weapon sway intensity to match HL2?

For example, when you move your mouse, the weapon swishes around on the screen, in HL2, this was much more intense, I was wondering if I could find a way to edit that.

In options, under the Black Mesa Tab, there’s a scrolling bar that’s says “view roll” and whenever I start black mesa its automatically set to 3.5, put it to 0.

^That’s not what that is

That’s for Gordon’s strafing movements intensity …

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.