You didn't say what the overall length was. Were they seated to RN or SWC LENGTH. I use two Seco cast that are with in less than .005 of the same length as 200 gr RN. I use win 231 at either 4.3 or 4.5 with a slight taper crimp. These loads shoot clean in my guns. Another good load is IMR 700 X, a lofty powder at 3.8 or 4.2 Real clean burning. The 4.2 is an excellent bowling pin round with the SWC. If your are less than .003 / .005 You should pull them out to the correct length. Good luck.
James
