New Bullet Concept… CRAZY?

For a while now I've been wondering if it would be possible to create a copper bullet with the back of the shank drilled out and a tungsten insert installed up to the typical after-impact/expansion length.

Weights
•Tungsten weighs 0.697 lbs per cubic inch
•Copper weighs 0.314 pounds per cubic inch
•Lead weighs 0.41 pounds per cubic inch

Tungsten is more than 2x the weight of copper.

Copper melts at approximately 2000 degrees and tungsten at approximately 6200 degrees.
The tungsten could be heated to the appropriate temperature needed to melt securely into the copper and lock the 2 together.

It would remove the need for overly long projectiles needed for weight in lead free options.

Is this idea crazy?
You don't want a solid piece of tungsten that would form from melting it. That would be a penetrator and have very poor to no expansion.
Also Tungsten has the highest melting point of any metal. Doing it that way would be extremely cost prohibitive.

But luckily tungsten bullets already exist, you can buy them now, and they work really great. Better than copper monos, IMO, and to anyone that prefers a EDLX to a TTSX from a terminal standpoint. And they don't cost any more than a high end lead or copper bullet.
 
Top