The flip side of relativistic mass?

One of the odd conclusions of relativity is that matter will gain mass as it accelerates. It is called relativistic mass.

I think my theory --- that gravity is an effect of matter moving through space --- makes some sense of this counter-intuitive conclusion. In my view, the matter does not gain mass. Instead, the matter gains more of the force of gravity --- manifest in weight --- because it meets more resistance as it accelerates through space.

Think of it like a bullet being shot out of a gun. At slow speeds, the bullet will impact with less force. At higher speeds, the bullet will impact with greater force. The bullet does not gain mass; it gains force.

Likewise, objects moving through space gain the effect of gravity as they accelerate. Basically, they meet more resistance as they accelerate through space. They do not gain mass; they gain the force of gravity.

From this perspective, relativistic mass is the flip side of my theory that gravity is a quality of matter in motion.