Originally Posted by
Pawildman
.......... A lot of people put a lot of stock in neck tension with the bullet. With a picked OAL and uneven lengthed cases, I don't think you can maintain that factor. Length of time in the neck at a given tension and point of tension is unreliable. Again, my advice is to trim. Period.
One would be much better off spending his time floating the barrel or bedding the action or many other things as his mileage will be far better than trimming to overall tolerances less than .010.
I've heard this neck tension argument many times and it just don't hold water.....maybe if the trim variabce was a quarter inch.....but .010?????
Consistency is a great goal.....but somethings just don't pay back...
Among them are weighing every powder change to .1 grain!!! Uniforming flash holes and uniforming primer pockets.....turning necks for hunting rifles that don't have a tight neck chamber....and trim lengths to "exact" lengths.
Layne Simpson reported it a long time ago....unless your rifle is already shooting 1/2" groups....these things do nothing for you.....and I looked at what he said and thought....yup....this matches my experience exactly.
Further.....the huge majority of hunting rifles that shoot 1/2" groups are shot on the internet.....not at any range!