R.I.P. Scout26
https://www.gunsandammo.com/editorial/carbine-compromise/249579
I have always heard both used pretty interchangeably. I have always said it "carbIne", I guess because that's how I first heard it. It could be I first heard it from the Colonel. I read a lot of his stuff in my teen years.
I "know" both are acceptable. But Car- BEAN is wrong. Every time I hear it, I cringe inside.