In case some haven't noticed, I've posted a very up-to-date BTDATA.CSV file in the "RockSim Asylum" area. I took all of the available tube sizes from the SEMROC tube page and made a few minor adjustments.

Here's the message with the file.

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
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BARs helping BARs

SAM 0044
AMA 352635