Considering my current people don't ever have anything in stock (Lucky 13, not complaining, I just need to be able to buy what I shoot) I need to find something else to shoot.

I have 1000 Missouri bullets 9mm 147gr flat point I bought last year with a groove and went to check to make sure they were still selling so I could get a couple more thousand and saw that they have groove and grooveless now.

Long story short, all anyone has ever had in stock was groove projectiles so I didn't even have to choose, is there any reason to get grooveless? And why even the choice? Considering the length I cant see how (or why) anyone would crimp into the groove with 9mm...

Let me know what I am missing here

Those are lube grooves not crimp grooves.

Old school molds made for uncoated lead bullets that are to be lubed and sized.

Since coating came to town, no need to lube so the bullet makers continued to use the molds they had.

As you see some makers are buying and/or modifying thier existing molds to groove less.

Some folks don't mind the lube groove in coated bullets and some do.

Ahh ok, I was unfamiliar since I started shooting powder coated from the beginning, makes sense. I always kind of wondered but there was never a "groveless" option so I didn't look into it. Thanks

 As stated above could be a lube groove
 Or could be for a role crimp in 38 SPL or 357
 Depends on where on the bullet the groove is

 You did not specify if these bullets are lead, plated or what ?

They're lead