I cast my own bullets from LEE TL style molds. The bullet itself will determine the seating depth. I did pull an assortment of factory rounds to measure the depth of the bullet in the case, ignoring the length that was out of the case just for comparison. I seat to the middle of the top band on all of them and taper crimp only enough to remove all traces of mouth flare. I cast 2-OG round nose for 45, TC and SWC style bullets for .40 and .380. This never corresponds to a standard seating depth from anyones table. As always, start light and work your way up. All bullets I seat to the physical attribute of the bullet cycle great and have no feeding issues in my (3)Colts, (2)Kimbers or (2)Taurus PT. I do change springs in my 1911 styles to accommodate the load variations I feed them with. The Taurus .40 is my wife's home defense gun, so it only gets one item on it's menu, which is as close to factory as you can get, so no spring changes are made. However you decide to feed it, just be safe.