Just shot a 10mm Glock 40s for the first time and I have a question.

Hello gun sub. Been lurking for a few weeks and first time poster here. I have a Glock 40 10mm with a 6" barrel, and I finally got to shoot it for the first time on my first camping trip where I could actually discharge a firearm. The gun is stock except for a Vortex Venom red dot on it. <br><br>It's been incredibly tough for me to get out and shoot this thing with all the lockdown drama going on and the fact that I'm camping with children right now, but I finally got the chance yesterday with my buddy Phil. <br><br>A couple of things before I get to my question, I like the way the gun shoots. The barrel length really does make a big difference with the 10mm cartridge. I've shot my G20 SF plenty of times and it doesn't have near the range or velocity as the G40. I've shot plenty of 10mm by now and I can say the G40 is a beast. The gun handles really well and the accuracy is surprisingly good. I'm currently using 180 grain Double Tap rounds and it seems to be shooting low and to the left just a tad bit. I'm new to red dots on pistols so I'm not too concerned about it right now and am more concerned with function and making sure the gun doesn't jam, which it didn't. If you're curious the round I'm using is the 180 grain Double Tap Gold Dot bullet with a velocity of 1300 FPS out of the 6" barrel of the G40. <br><br>I'm also a little surprised at how comfortable the Glock is to shoot. Don't get me wrong it has some real kick, but I can honestly say I find it more comfortable to shoot than a 40 S&W Glock 23. It's obviously not as easy to shoot as a 9mm Glock, but I can shoot it for awhile. If you're a small person or a small framed woman, it will be tough to handle. But for me at 6'3" and 230 lbs it's no problem and I love the way it shoots. <br><br>Here's my question for all you seasoned Glock owners or 10mm shooters. I noticed when I've shot larger calibers like .357 mag or .44 mag, the sound of the round going off is a sharp crack with a slight echo. Believe it or not, real life gun fire doesn't sound like it does in the movies unless you're shooting a large caliber. This was the case for my .357 magnum Desert Eagle and my S&W .44 mag. When I shoot my G40 it doesn't have that sharp crack sound, just the sound of the slide clacking back. If you've ever shot a Glock you know what I'm talking about. Even my 5.7x28mm Glock 57 has that sharp crack sound. It's kinda strange to me that a 10mm doesn't have that sharp crack, I would think that it would with its power. Is this normal for 10mm? Has anyone else experienced this? <br><br>Thanks in advance.<br><br>Edit: a lot of you are saying the "crack" sound is the sonic boom from the bullet breaking the sound barrier. I get that, but isn't the 10mm supposed to break the sound barrier as well? I don't know, maybe 1300 FPS isn't enough to break the sound barrier in certain conditions, but it should be especially at higher elevations and in more empty space. I just think there has to be more to it than just the sonic boom or else a .357 or .44 mag would have the same problem, and they don't.