Well my only experience with the .430 300g is on paper. I should get some on game results this year. I have the utmost confidence in the .452 300g version-especially in the MAG version. As for the .430 240g I like those as well. They expand well and are very accurate for me. Those were the only bullet that I used in the 90's and killed a ton of deer. I prefer a little heavier bullet though. That's why I am partial to the 300 grain-ers.