Author Topic: New (to me) mould  (Read 465 times)

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Offline flyboy

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New (to me) mould
« on: April 12, 2008, 07:44:53 AM »
I'm excited! I just got a new RCBS 162gr. gas check mold.  I was looking at it, and found that the ends would come together, but there was a gap in the middle.  Other than that, it appears to be in very good shape.

I read through my Lyman reloading manual, and the RCBS Cast Bullet Handbook,  and following the instructions, adjusted the alignment pins, then used a graphite pencil and eraser to remove burrs, then gently worked on  the surface with 800 grit wet or dry paper. The gap is much reduced, and almost eliminated when I apply pressure to the mould handles.

My question is:  will the slight gap affect casting at all?  Will this "wear in" to a better fit, as I cast?  I don't think it will cause fins on the bullet, but it may just be my inexperience speaking. 
What do you guys think? 
Thanks

Offline Lloyd Smale

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Re: New (to me) mould
« Reply #1 on: April 13, 2008, 12:28:53 AM »
hold the bottom up toward the sky or a light and look into the cavitys. If there is light in the cavitys you need to do more adjusting or filing.
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