I lost one a few different times. 2 times on the Baja outlaw- 1 knocked a good chunk out of the cav plate.
Lost a few on Cig too.

There was a vid floating around some years back of a boat (cat?) throwing a blade while running and the GoPro picks it up perfectly as it launches skyward. Can't remember if it included a still of it or a slow motion section showing the blade taking orbit. I just remember thinking if this was a poker run I'd hate to be behind that boat and catch that blade in the teeth.

Bravo Castings are porous (pretty sure I spelled that wrong). I threw a blade on my 22p Bravo prop on one of my Optimax 225s. I am running them near surfacing, so fatigue is going to happen when twisting and flexing a cast prop...…. I actually thought I had a fouled plug and ran the boat the entire weekend, only realized it was a blade when I pulled the boat out after the 4th of July holiday weekend. I only lost about 1/3rd of the blade.

That was a box stock 28P Bravo1 with probably 100 hours on it; on a 37AT with 496HOs.
That was the second year I owned the boat. It was never a surfacing prop or abused other than a few occasional rough spots.
The other was still on the boat when I sold it, at ~500 hours. :D

That happened to Tyson and they caught it on video.

Did you check the propshaft afterwards?

Yeah, surprisingly enough it was still straight. I didn't run hard that weekend.

Applies to all mercury props lately not sure what the problem is over there. I had a 24 Maximus and bought another one, several years apart, they were both "stock" but two completely different props. I sent back a pair of ECO Enertias, they were full of voids in the casting.

Probably made in CHINA

Probably would be better castings if made in China. Their foundry is in Wisconsin.

"Stainless Steel Performance

At Mercury Marine's propeller foundry in Fond du Lac, Wisconsin, magic happens 24 hours a day. Through unmatched engineering, design, and innovation, molten metal is transformed into the highest-quality, best-performing, and best-selling marine propellers in the world. Our experience and expertise – along with proprietary technologies such as Flo Torq®, the X7 Alloy®, and PVS (Performance Vent System®) – give Mercury props a true competitive advantage."