The short answer is "No". .38 special is a revolver round and .38 auto a.k.a .38 ACP is for as the name implies "Automatic" pistol. The cartridge of the .38 auto is not even rimmed and would fall straight through the cylinders of a revolver, if it even fits. The bullets and cartridges also have different dimensions, and thus different firing pressures.

More info: Wikipedia

.38 Auto (ACP)
.38 ACP - Wikipedia, the free encyclopedia

.38 Special
.38 Special - Wikipedia, the free encyclopedia

And congrats on your new hardware.

Originally Posted by Ra

The short answer is "No". .38 special is a revolver round and .38 auto a.k.a .38 ACP is for as the name implies "Automatic" pistol. The cartridge of the .38 auto is not even rimmed and would fall straight through the cylinders of a revolver, if it even fits. The bullets and cartridges also have different dimensions, and thus different firing pressures.

More info: Wikipedia

.38 Auto (ACP)
.38 ACP - Wikipedia, the free encyclopedia

.38 Special
.38 Special - Wikipedia, the free encyclopedia

And congrats on your new hardware.

I am embarrassed that I asked the question. I do know that acp stands for automatic Colt pistol but I was just not thinking when I wrote the post. I appreciate the info.

Originally Posted by zebramochaman

I am embarrassed that I asked the question.

Don't be. It happens to the best of us at times.

Your "new" revolver fires the .38 S&W cartridge, which differs from the .38 Special in that it is shorter, fatter, and fires a heavier bullet at a slower velocity.
You should be able to find some lead-bullet, factory-loaded, .38 S&W cartridges with a little searching. Start with Google. Maybe Remington? Buffalo Bore? Old Western Scrounger?

During WW2, Great Britain used the .38 S&W cartridge (under another, more British, name) as their standard service-revolver load. It used a true .380", 200-grain bullet at about 750fps velocity. (The .38 Special fires a .357" bullet.)
Their theory was that a heavy bullet, travelling quite slowly, made the pistol easy to control while still presenting deadly force at pistol ranges.
The theory proved untrue, at least in battlefield conditions: It was indeed easy to control, but it was ineffective as a man-stopper.

During the period 1880—1940, the .38 S&W cartridge was popular in the US, used in inexpensive so-called pocket revolvers (today: "Saturday-Night Specials").
H&R sold self-defense revolvers in this caliber well into the 1970s, and maybe even the 1980s.