In this sport when a vast majority of harvests occur within 100 yards & we are only allowed one shot before reloading -- plus the price of the bullet is the same no matter how big or small it is, -- well when you add it all up......bigger is better!!!!!!

I think your grain sizes listed are wrong. You probably are asking about Powerbelts - which are 245 and 295 grains.

It is of my opinion that the best overall Powerbelt for fast twist inlines are the 348gr - followed by the 405gr.