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?