Have you ever had a go-to load that you liked, but was surprised at the velocity you were getting when you finally ran them over a chronograph?
I have been shooting 45 Colt with 7.1 grains W231 and a 200 grain LRNFP. Today I ran ten of them over my chrono and was only getting 600 fps. How can that be? They are mild but had no idea they could be that low. My other loads were all about the velocities I expected, but not these 45 Colts. These readings are nowhere near what the manuals call out. Any thoughts? Just how low a velocity can you go?