The biggest problem is long string large samples prove nothing other the generated heat changes point of impact its somthing we do when devloping loads and in my case . cartridges design and powder types in f class we look for the least amount of vertical on a 20 shot string. reason 20 shot timed venues. But when shooting elr 5 shot to 10 shot is what is needed. so large samples of shorter strings works for what is applicable. Long strings proves nothing other then the nature of the beast and proves nothing about what the rifle is capelable of in your venue. And believe me i dont show up at a match with rifle or load excuses
This is why David Tubb runs a chrono anytime he is allowed.
He understands that it’s almost impossible to get SD’s low enough to hit targets consistently once past certain yardage and/or target size.
So, when he misses high or low, he has data that tells him if it was the velocity that caused the miss. If it was the velocity, you don’t make a hold change on the next shot.
For example, you shoot a 10 shot 5sd string.
Your sd might be 5, but likely not. It’s going to be somewhere between:
3.4 and 9.1
Which means 95% of your shots could possibly have an ES of 36fps.
If you’re shooting at a distance/target combination that 36fps can miss, and you don’t have a chrono………
When you miss vertically, you can’t reliably decide if you need to adjust your elevation or hold, or just send another one with the same.
There are very, very, very few people who have actual and honest 5sd ammo.