Good casting session today

[TexasMac]

Getting ready for the upcoming Texas State matches. I believe I’ve got the casting technique pretty well figured out. Now if I can only shoot as well. The 140 bullets are from a BACO JIM410410M1 mould for a Browning .40-65. I have been using 16:1 alloy for some time but thought I’d try 20:1 for a change to see what happens. Based on a specific gravity test these are actually 21:1.

Wayne

[Plainbase]

Wayne, was your alloy 20:1 or 20 to 1? 20 to 1 would give you a proportion of 21:1. 20:1 yields 20 pounds of alloy containing 1 pound of tin vs 20 to 1 which yields 21 pounds of alloy containing 1 pound of tin.

[TexasMac]

Wayne, was your alloy 20:1 or 20 to 1? 20 to 1 would give you a proportion of 21:1. 20:1 yields 20 pounds of alloy containing 1 pound of tin vs 20 to 1 which yields 21 pounds of alloy containing 1 pound of tin.

Plainbase,

It's 20:1 by weight or in this case actually 21:1 by weight meaning an alloy containing 95.5% lead and 4.5% tin my weight. Therefore 10lbs of 21:1 contain 9.55lbs of lead and 0.45lbs of tin. 10lbs of 20:1 contain 9.52lbs if lead and .48lbs of tin.

BTW, by my definitions:
20-1, 1-20 (1 in 20) all imply 95.0% lead & 5.0% tin
1:20 (1 to 20), 20:1 (20 to 1) all imply 95.2% lead & 4.8% tin

Wayne

[Bakebfr480]

Where and when are the Texas state matches?