Keep yer eyes open for the 405 WCF. They come available from time to time. Very capable cartridge. I have a Ruger #1 chambered for that round. Love it, but it's a 41 cal, not 40. Uses the 41 mag pistol bullets for grouse and rabbits. Fun!
"Keep thy heart with all diligence; for out of it are the issues of life." (Prov 4:23)