I'm planning on loading 150gr Ballistic Tips in my 30-30 contender. I need to know what the COL would be? 2.550 is for the FP, and Sierra has 2.770 for their SSP bullets. Wondering what the Nosler's would be? All I find is the 150gr 30-30 round nose data, which is still 2.550". Any info would be great. It is a 21" carbine, but figured I would get more responses here. I am planning to load it with Lever Evolution powder, so any load data can be PM'd my way.