Thi predicted BC for that pellet is: 0.0741217-24-RF-CC2 2 Cavity RG2 HB Brass | NOE Bullet Moulds
noebulletmolds.com
Thi predicted BC for that pellet is: 0.0741
That seems too high for that size/shape.
To be clear, this is a pellet mold for casting with molten lead.217-24-RF-CC2 2 Cavity RG2 HB Brass | NOE Bullet Moulds
noebulletmolds.com
I know it's not easy to find sizers less than .221, but with some ingenuity you can size them to .2165, .2169, .2173, or .2177. There is no need to buy another mold if they do not fit.Bob is the guy that designed the mold I was referring to. He doesn't recommend sizing it because it is designed for minimal engagement and minimal bore friction. If it drops slugs too large for your barrel, sell and and buy something else. My recommendation not to size wasn't a blanket statement.
This mold fills out fine with pure lead. All of my air rifle molds do if I pressure pour.