Trim dies

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I have been reloading a while now. I don't have 60 years of experience like some guys, but almost 20 years.

In that time, I have never ever used a trim die. I have always just measured a sized case with a caliper and trimmed if needed (or desired) with a rotary trimmer.

I was just wondering if there is any upside to using a sizing die? I suppose maybe quicker setup? Because these days I use an RCBS power trim pro with 3 way trimmers to avoid camphor and deburring. But setup and adjusting can take 10-15 min. Maybe a sizing die is faster for small batches?

Anyway, it's just something I was curious about.
 
Most usage of trim dies is when forming cases.

Example: 30-06 formed down to 8x57 or maybe 7x57.

The case is too long after forming, insert it into a trim die, use a file or hacksaw to trim the case to length. I normally do this and then final trim with the case trimmer.
 
For me its easier to trim my brass back no matter its length on my crank trimmer as its a whole lot faster than a flat file and a trim die. Although for a travel bag. A trim die is a dandy way to supplement not having a trimmer available when there is a shortening of brass needed. (away from the bench)

When I want a really tight tapered bullet crimp on a non-cannelure bullet. A trim die I found works well for that need. But requires a {go easy at it} touch. Being such crimp is kind'a easy to over due.
 
I love the trim dies. I use them a lot for bottleneck cases and you have some real consistency in lengths without any problems. I sure wish someone would make on for the 6.5 Creedmore!
 
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