Looked it up in Donnelly.
"There is nothing that will form to this case. Cases can be made from solid brass, annealed, trimmed to length and F/L sized. Also, we have made cases by using 1/4" tubing to rebody a .25ACP case head."
The second method sounds easier.
45gr. bullet, 4.7 Unique, 650fps. (4.7gr. of Unique sounds a bit snappy to me.)
Case length - 1.12
Head Diameter - .253
Rim Diameter - .308
Neck Diameter - .248
Loaded Length - 1.35
Rim Thickness - .07
Bullet Diameter given as .225