For those that are asking if it is safe - consider your hang angle.
The closer to a 30 degree angle, the less concerned you need to be.

If however you pull tight, and approach a 5 degree angle - you could risk the limits of the amsteel.
In theory, 300lbs at a 5 degree hang *could* break 7/64th amsteel.

Play with the numbers here:
https://theultimatehang.com/hammock-hang-calculator/