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Sorting Sierra 175gr TMK (and others)

Recently started sorting bullets base to ogive, and limited experience with my batch of Sierra 168 MKs was not encouraging.

I wanted a better BC, so I had picked up 500 Sierra 175gr TMKs. Today I sorted them by BTO length. I had no idea what the range/distribution would be, so I had 8 buckets, some labels, and a pencil waiting with more buckets in reserve.

Here's what I got from what turned out to be 503 bullets:

498 @ 0.5665 to 0.5675"
2 @ 0.566"
3 @ 0.6425"

Frankly, I was stunned. Keeping aside the 2 that barely fell outside the 0.001" range was more like a "why the hell not?" lol. The fact that 3 bullets (the extras?) measured exactly the same is interesting . . . have to weigh them, they size more like a portion of my 168 MKs did :)

So here's my question to those with more experience:

When sorting bullets by either BTO or bearing length, what kind of consistency have you typically seen within a batch? batch to batch?
 

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