Posted by Petevm on Nov 07, 2011; 8:38pm
URL: http://oldforum.flyshooter.com.au/Acceptable-loaded-round-run-out-tp4968112p4972370.html

Greg,
I can't remember when I last checked a round for runout - could be 10 years ago. Testing done prior to that revealed no discernable difference in grouping ability. With our long range shooting you will find that to accomodate the long VLD bullets the chamber normally has at least .100 " of free-bore and typically a 1.5 degree throat. What this means is that by the time the bullet is jammed in there it has to be centred in the bore. Even if you jump it .040" it will still self-centre. To aid in this process I will normally full length size my cases every firing so that the bullets placement is not constrained by the case. It's like the tail wagging the dog but it works. I also don't neck turn for most long range applications. Because of the amount of ammo we go thru in a year (upwards of 6,000 rounds per year) I need to keep things as simple as possible - so no unnecessary case prep, no bullet sorting, no weighing of powder charges etc, etc. If I get a flyer I can live with it.
Pete