Re: Competition Dies?
The term "competiton dies" is a marketing ploy, there is no valid reason to market them in such a way. The Forster and Redding versions do have a full body length sleeve that aligns the case and bullet before seating starts and that USUALLY reduces bullet runout compared to conventional dies or other 'comp' die designs that only align the bullet to the case mouth. But, fact is, if the parts of a conventional seater properly align, AND the user's technique is good, the more costly dies won't do anything; that's not common tho.
Are they worth the added cost? Well, I buy 'em for my better rifles but not for most of my big game hunting rifles. At best, the difference on target isn't vast but those who buy them think they are worth the cost, those that don't will disagree.
Micrometer seating heads are a user aid, they add nothing to the quality of the ammo produced.