Gas check to big?

[megasupermagnum]

I never could wrap my head around where "Beagleling" (putting foil tape on the mold surface (s) to make the cavity bigger could:
1) produce round boolits
2) not have major finning

it's too easy to polish the mold to your desired size (this take a little time, go a little, warm the mold cast some boolits measure them then go more (If needed)

aluminum will polish faster than steel. I usually use Flitz polish

Well... it does. I'm sure they are slightly out of round, but we are talking less than .001" here, unless the mold was worse than that to begin with. I've done it on a few molds. They grow concentrically, and I have not had any finning.

Lapping out a mold on the other hand is not easy. I tried on a nice old NEI mold. I took my time, thought I did a good job. I now have a "mold" that casts bullets .007" out of round, and even with sizing the low spot still isn't as big as I need it to be. That mold is *****. I sure wish I had just left the aluminum tape in there. Lapping is an art best left for a talented hand, not a beginner.

[BUFFALOW RED]

Got sizer in today .314 puts gas checks on & barely touches boolits made with single mold.
The double ones boolits slide- fall through .
I gas checked several from single mold & rolled in alox letting it dry tomorrow I'll put more lube on to load some. Still have the double mold to try with tape bugleing.

[BUFFALOW RED]

The low temp boolits from single mold will size 314 should work, body is under size of bore though. pushing a tapered punch in to open up case to get gas checks in. Lee die stops at 311
Found out 4759 is done guess ill use up what i have left trying different boolits.
then do it again with some replacement powder.

[BUFFALOW RED]

Loaded today to get book length of .293 had a land and lube Grove hanging out

[mehavey]

...rolled in alox letting it dry tomorrow I'll put more lube on to load some....

You do not have to apply more ALOX at this point.
Even the thinnest coat is more than enough... just "greasy fingers"
More... just takes longer to dry .... and is actually counterproductive.