I was playing around on a twist calculator that I have used with success when trying to design a bullet mold and I came up with a bullet that is .90 in length, .400 in diameter, shot at 1400 fps using lead will be right in the neighborhood for your 1-24 twist barrel. Accurate shows a mold 40-280Q with pretty close to those parameters. The good old "I" bullet is a proven shooter. Maybe an email to Accurate asking to design a 40 cal version using the "I" bullet design at your specs.
The twist calculator that I often use is kwk.us/twist.html free on the web. Trying to find the perfect over the counter bullet for your chosen caliber may be a frustrating journey.