kansas45, 5.1 gr of Bullseye is a max load for a 45 ACP with a 230 gr lead bullet (844 fps). With jacketed 230 gr bullets, you can go as high as 5.7 gr of BE (859 fps). As you can see, your 5.0 gr load, though well under max for a jacketed bullet, would be near max with a lead bullet.
Here's a basic reloading rule: All ammo loaded in rimless cases (ie: 45 ACP, 9mm, 40 S&W) get a taper crimp. Rimmed cases (ie: 38 Spec, 44 Mag, 45 LC etc.) generally get a roll crimp, however a taper crimp may also work.
The reason for a taper crimp on your 45 ACP ammo is the cylinder's chamber is designed just like a semi-auto chamber with a "stop" that contacts the case mouth. This prevents the case from entering the chamber too far and makes the case headspace properly (called headspacing on the case mouth). If you apply a roll crimp, it shortens the case allowing it to go too deep in the chamber, thus increasing headspace. This will cause problems such as: sticky extraction, jammed cylinder rotation, accuracy issues, and light primer hits or misfires. Headspace is the distance between the recoil shield and the case head. In most revolvers, it should be about .010" as measured with a gap gauge using a SAAMI spec case .898" long. Note: most 45 ACP brass is considerably shorter than SAAMI specs. An interesting note: you can actually chamber a 45 ACP case backwards (head first). The case will go into the chamber until the head hits the stop. Try it!
Rimmed cases use the rim to stop the cartridge from going too far into the chamber. This is called headspacing on the rim. The length of a rimmed case is not critical so a roll crimp is usually best but a taper crimp will also work with bullets that have no canalure.
Your COL sounds about right, however this can vary with the brand and style of bullet used. Not all brands of bullets are created equal so a 230 gr FMJ bullet can take on many shapes. Example: if you are using a Speer 230 gr FMJ, the COL would be 1.260". A Hornady 230 FMJ seats to 1.250" COL. Other brands could be different There are even more differences in hollow points.
Bullet seating depth is important for accuracy and chamber pressure, (also feeding in a semi-auto). The best way is to follow the bullet manufacturer's recommended seating depth.