Very dangerous, DON'T DO THIS!!!!!
What you are doing is increasing the mass of your projectile and therefore the amount of pressure necessary to start it moving.
The missing lead from a hollowpoint in a .38 caliber bullet can weigh between 10 and 40 grains. It depends on whose hollowpoint design it is.
Regardless, loading an already pressure-maximized cartridge with additional mass will have a dangerous effect on your power curve.
If you look at a reloading manual, for any given caliber, you will notice a trend. As bullet weight goes up, maximum powder charges go down. This is because the heavier bullet imparts more resistance to the expanding gas in the cartridge and barrel when you pull the trigger.
Since your gun is only a .38 and probably not even rated for +P ammunition, I would suggest you stay with standard .38 loads. Definitely do not add mass to your already exceeded bullet weight.
Also, do not try to crimp the hollowpoint closed. You will never get the bullet balanced correctly again and it will spin out of balance like a tire in need of rotation, going way off target when you need it most.
If you have a friend that hand-loads whose math you trust with your life, get him or her to load up some of your old .38 brass with some 158 or 180 gr lead semi-wadcutters as hot as SAAMI spec allows in his or her loading manual. Just plain hard lead.
The last thing you want with a hairy-toothy thing coming at you is your gun blowing your hand off too...