Got 50rds of 308 Geco 170gr target ammo for which I’m having trouble finding / estimating a ‘starting point’ BC to put me 'in the Parish' before I launch any downrange tomorrow. They have good ogives but flat tips….....I’m confused!! (yes, despite appearances,they are marketed as target bullets). What would you estimate (I believe they are flat base)??: Geco in the middle, 165gameking on left (0.404), 165NBT on right (0.475)……the ogives appear similar….just the tips seem different: The ogive is looks too good to class them with the Sierra Prohunter 170 FN (BC: 0.204). Some more views of the Geco 170gr tip: Anyone got anything more edumacated than (0404 + 0.475 + 0.204)/3 = 0.361 ? Thanks!