OT- Fun w/scales

[Andrew]

I got my Acculine 505 scale in the mail today and decided to try it out on a batch of .45 bullets I got from Bullet Caster Inc. I never used a scale before and it was real easy and real fun. I weighed out 3 groups of 10 to see if I could get a feel for how the box of 1K would be like.
This is what panned out...

.45 225gr FN lead pre-lubed

Min-Max= 224.6gr-228.2gr

Spread= 3.6gr

Mean= 226.3gr

Std Dev= .98gr

I re-read Junior's page on seperating bullets using the standard deviation method then downloaded the Excel/Works spreadsheet that is at the bottom of the page.

I was happy with the results I got considering that 70% of them fell within 1 Std Dev of the mean, or, 70% fell within .5% of the mean weight(99.5%-100.5%). I think that's satifatory enough anyways.

I will be testing my RB's tommorow to see what secrets they hold for me.

[Ysabel Kid]

Very cool!

One of the neatest things about our "pursuit" - you can get into it deeper and deeper as your time, knowledge, and (most importantly) your wallet allows!!!

[J Miller]

I might have to try that sort by standard deviation thing once. I usually just weight 10% of them and use that as an average for my weight records.

Joe

[Andrew]

I might have to try that sort by standard deviation thing once. I usually just weight 10% of them and use that as an average for my weight records.

Joe

I really liked the spread-sheet that Junior made. It makes the figuring a snap since it's all done by the sheet, you just add the data. If you don't care for limiting yourself to 15 entries you can edit the equations to a list that's as long as you like. I ran one down the side that contained all 30 of my entries for a little more accurate figure.

[cnjarvis]

I thought this was going to be about the bathroom scales and wondered how long the wife would let you live.

I weigh my own bullets occasionally but since I'm not able to cast often, I don't get serious about it. Yet.