Originally Posted by ovastafford
I was wondering for long range shooting out to 1,000 yards what is the largest amount of velocity spread between shots? I have a really accurate load for my 300 but I was going to chronograph it.
If you have a good chronograph look for single digit SDs and if you can't get that low
up to 15 SDs will work but the higher you go the shorter the range for acceptable
At shorter ranges the low SDs are not as important but at 1000 + yards it is very important.
To get an idea look on a good ballistic chart that goes to 1000 + yards and use 2 velocities
25 ft/sec apart and you will see the difference in drop and wind effect that 25 ft/sec has
and cut it in half and that is the biggest number you would want.
My best performing 1000 yard + rifles have had a SD of 3 or 4. but this does not come easy
careful loading is a must.
This is just my opinion and some may dissagree
J E CUSTOM