Dimensions on Accurate Mold Drawings?

[alamogunr]

It has been almost 16 years since I retired and dimensioning systems are a dim recall. I'm not familiar with the system used on Accurate's mold drawings. Specifically, how do I arrive at the overall length of the cast bullet? Do the dimension arrows that line up vertically add together to get the total from a datum line? AND, what do the pair of dimensions on the right side of the drawing under the mold number represent?

The two molds I'm looking at are:

45-230A
45-230F

I've only ordered one other Accurate mold and did so on the recommendation of another caster.

[TurnipEaterDown]

45-230A -- total length = 0.595"
45-230F -- total length = 0.610"
Take the difference (i.e. do math) if you want dimension between two features -- such as if a bullet design you like has a crimp groove for a revolver.

[HWooldridge]

His reference seems to be a zero corner on the lower left side of each drawing, at the bullet base - so you could call that a convergence of A and B datums, even though they are not so defined. He calls out the ogive length as a basic dimension.

[alamogunr]

Thanks!

[bigboredad]

Besides the measurements I would go with the 230A

Sent from my SM-T377V using Tapatalk