Re: Help with my long range shooting
Both the above posts offer great info/insight. Just to reinforce what they are saying:
At 1650 yards, I suspect you are getting close to or are at the transonic zone. The 208 has most likely gone to or past it. Your accuracy/stability will suffer. To what degree? Its hard to say. There are so many variables it isnt even funny. Most the variables in this context we are not even aware of.
That said, my two best 3 shot groups at a full 1000 yards (3.5" and 4.5"), all bullets keyholed the target. They all went nose first but at sizeable oblique angles. The funny thing is that from 100-600 yards this load grouped a consistent 1MOA and yet tightend up over distance. There are no hard and fast rules here except that the transonic zone WILL affect all bullets to a degree. Some bullet/twist/velocity combos will react differently. Some will survive and others will tumble. Either way, accuracy will be affected.
Is 1.5 MOA really that bad at 1650 yards? I see plenty of guys at the range that cant keep 2 MOA at 100 yards. I know plenty than can do better than 1.5 at that distance and more that cannot. If youre getting a consistent .5 MOA on a good day and 1 MOA or less at 1K on a bad day, you should be happy.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.