bullet drop

Ok so first thing is first I don’t have a chronograph (yet). Currently thinking I may get one but also wondering if there is a point I reload my 6.5 Creedmoor with 34gr of N-150 in Peterson SRP brass. Using a hornady 143gr ELD-x seated to the max COL (recommended by hornady) of 2.800” which is...

Any tips on range estimating. I have just been told try one eye closed with a finger on target. Close the eye then with the other there will be a gap, estimate the gap measurement between both positions and multiply by 8 (or 10) and that will be the range. I've yet to try, anything similar out...