I have a question. Did anyone ever produce a true round nose bullet in 224 diameter. I am aware of the semi pointed Sierra's and the Speer semi spitzer 70 grain? I saw a picture once of a Hornaday that was supposed to be a round nose but never saw it cataloged.

I make my own 60 and 65 grain bullets, but to the best of my knowledge, none of the major bullet makers produces them.

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This is about as close as you will get is the Nosler Bonded Solid Base which is a protected point.
Last weekend they shot 1" in my AR with IMR4895 and CCI 400 primers:

http://www.nosler.com/bonded-solid-base-bullet/

Depends on what you mean by TRUE round nose, , but Yes.

https://www.sierrabullets.com/store/product.cfm/sn/1200/224-dia-40-gr-Hornet

http://www.montanabulletworks.com/224_Rifle.html