Ive used the partitions but not on anything big myself but i have seen it used on bears and lions. The fan blade petals dont stand up to really heavy bome as well as the swifts design. On small to medium sized game they both work really well and all the animals ibe seen shot with a partition died quickly and in the case of the lion it was a good thing! The front lead is lost and i switched to the swifts for the big stuff after seeing the rear lead behind the partition get loast as well as the front. Its not nearly as indestructible as the swift and the way the swift jacket for the nose area tapers is why i think it expands at a lower velocity and quicker to its maximal diameter. The swift penetrates better, both do alot of damage. The nosler was a true bargain and a pity it was ever discontinued. I wouldnt hesitate to use either but for anything huge or going thru bone on bigguns i would take the swift