JWL the reason I shoot the bullets in the order cast is believe the bullet hardness changes as the lead pot goes down. If one were to shoot them in order of exact weight a bullet from the start of the session could be harder than the last softer bullet cast being of the same weight. If shooting steel animals it probably would have no ill effect due to the size of the target and a bigger free error factor. If one is shooting benchrest Schuetzen there is no free error factor. The difference of a shot being scored a 25 or a 24 is based on half the bullet diameter being in the 25 or out a 24 and now one point down. The difference of only .001 of the exact center of bullets diameter being out can easily keep one out the top three in a match at our club. If one bullet is harder than the next it would be hard for one to just assume they would both go to same place on the target. The goal is for everything to be exactly the same from one shot to next and it really is quite impossible as nothing remains a true constant. I have found over the last sixteen years of competitive shooting that as things start to gradually change on the target I can then recognize it and then make the required adjustments to keep up them. In reality if a softer bullet will not perform exactly the same as harder one is not really the issue. If one shoots in the order as cast any adverse results cannot take place because you have eliminated that possible variable by doing so. Eliminating all of variables is the true main goal, if not addressed and eliminated the errors they create all stack up in your opponents favor and not your own. The more you let them stack up or to remain the more points you freely give to them and the less your chances of becoming or remaining competitive become and the true and constant end result.

I hope this was helpful in addressing your question.

JLouis