I have my FirePoint in characters left hand.How can I make it accurate to my crosshair

[wheat chasm]

https://hatebin.com/mqgikulncy

[main snow]

So you want the shot to go from the player's hand to the crosshair?

This logic looks reasonable. It's what I've done before.

the default raycast distance should be very large

I think the default layer mask is everything but the "Ignore Raycast" layer

You might want to pass those arguments instead of using the defaults, just to be sure.