Funny, because the 338 Marlin is only about 100 fps behind the 338 Federal (essentially the same velocity range). I remember seeing an FTX sectioned and the interlock ring was right next to the cannelure which is very far forward. Seems like this would override the ring and cause core separation. Ring should be closer to the heel.
Personally, I prefer 200 Ballistic tip because the jacket is about 60% of the total weight. Even with core separation, you get 60% weight retention.
