A quote from the first section: https://precisionrifleblog.com/2020/03/2...velopment/
"in the last article, we discussed how quickly the lands of a barrel erode. While that is dependent on many factors, the measurements shared in the article showed an average of 0.004-0.007 of erosion every 100 rounds for popular mid-size cartridges used in precision rifle competitions.
Those two things seem to present a problem for those of us who might fire 100-200 rounds in a single match, because by the last stage our bullet jump could be 0.014 longer than it was on the first stage. If changing bullet jump by 0.002-0.005 inches can have a dramatic impact on precision, what will 3 times that much do?
Some of you may already be thinking you might start loading your 200 rounds of match ammo with increasing length. We just need to seat the bullet out 0.001 more every 16.67 rounds, right? Stop. Before we add yet another layer of complexity, what if were coming at the problem the wrong way? Knowing that well be in matches that may require 100-200 rounds, maybe our priorities should be different than other shooting disciplines that are low round count or literally load their ammo at the range as theyre shooting. What if instead of looking for the one exact bullet jump that provides 100% optimal precision, we instead looked for the bullet jump that is the both forgiving in terms of bullet jump AND still provides good precision?"
There is too much in the articles for me to give short answers without the data and methodology they post. Be sure to read the comments sections as there are good questions and replies there.
"in the last article, we discussed how quickly the lands of a barrel erode. While that is dependent on many factors, the measurements shared in the article showed an average of 0.004-0.007 of erosion every 100 rounds for popular mid-size cartridges used in precision rifle competitions.
Those two things seem to present a problem for those of us who might fire 100-200 rounds in a single match, because by the last stage our bullet jump could be 0.014 longer than it was on the first stage. If changing bullet jump by 0.002-0.005 inches can have a dramatic impact on precision, what will 3 times that much do?
Some of you may already be thinking you might start loading your 200 rounds of match ammo with increasing length. We just need to seat the bullet out 0.001 more every 16.67 rounds, right? Stop. Before we add yet another layer of complexity, what if were coming at the problem the wrong way? Knowing that well be in matches that may require 100-200 rounds, maybe our priorities should be different than other shooting disciplines that are low round count or literally load their ammo at the range as theyre shooting. What if instead of looking for the one exact bullet jump that provides 100% optimal precision, we instead looked for the bullet jump that is the both forgiving in terms of bullet jump AND still provides good precision?"
There is too much in the articles for me to give short answers without the data and methodology they post. Be sure to read the comments sections as there are good questions and replies there.