mold dropping light

[Canadian caster85]

So I just cast last night for the first time with the Lee .309-180R and my bullets are dropping at 168.4-170 gr. The lead I'm using is 5 parts ww to 1 part range scrap. And I was just curious as to whether this is normal. Any insight or thoughts are greatly appreciated...

[Yodogsandman]

Very few molds drop boolits at exactly what they say they will. Your alloy will make a big difference. I only have one mold that drops at the right listed weight. Mostly they all drop on the heavy side for me. It is strange that your mold drops a lighter boolit. I would check my scale with something of a known weight, first and maybe check it on another scale..

[Canadian caster85]

Your quoted weight sounds about right.....for the .309-160R

What is the the length of the 160r? I will check to ensure the correct mold was shipped

[Canadian caster85]

Mine are measuring in at .9645 in

[Yodogsandman]

The mold number is on the top of the mold adjacent to the sprue plate as you look down on it.

[Canadian caster85]

Yes mine is labeled at 180...... hence all my confusion

[fivel_976]

Great info