i havent yet, but theres a couple forum member at my place that shoot them and they've had great results with them.

.45 Apex,
http://frontiermuzzleloadin.powerguild.net/t2134-200-gr-nosler-jhp

just search around in the shooting range and you'll see some .45cal posts by the members that shoot them.

https://bs-bp.forumotion.com/