A couple of questions I'm sure some ballistic gurus will know the answer to please. when you buy a box of ammo, inside the box is normally the ballistic data with the distance, velocity, energy and -/+ inches at different distances. How accurate is the -/+ data? Can you trust it as a guide to aiming off at those distances?
250y -7.5" and so on. Ideally I need to find out for myself I know.
My ammo is 150g sp by RWS for a .308 heavy barrel, which is zeroed one inch high at 100y.
The ballistic data from RWS is for a 23.5" barrel, zeroed at 100y. How different would it be for a 20" barrel?
Many thanks John