The 38 Special is a wicked easy caliber to reload.
If you are only shooting at the range, I really don't see the reason to shoot 357s or +p loads. Load them on the heavy side, near the max load, if you are looking for a little extra power, I would rather shoot more than pay more for a single round. Buy a few hundred rounds, save the brass and reload them. Just my opinion.
Have fun, that's a great gun.
Curtis