Tball,
The 357 Remington Maximum is a great round! It is accurate, potent, and easy. The best place I found for brass is Cabela's but it is going to get hard to find so buy it where you find it. here is a favorite load of mine:
Reloading Record
Thompson Contender Super 14 357 Maximum
Weapon make Thompson
Bore-to-sight height (inches) 1.375
Weapon model Contender
Twist rate 1 in 17
Barrel length 14 inch
Serial number xxxxxxx
Case make Remington
Cartridge head stamp 357 Maximum
Cartridge designation 357 Maximum
Trimmed length (inches) 1.6
Over-all length (inches) 2.24
Bullet make Speer
Bullet weight (grains) 180
Bullet type Flat Nose
Ballistic coefficient .245
Bullet diameter .358
Powder make Hodgdon
Powder type H110
Powder charge weight (grains) 22.5.0
Wad (make and type) None
Primer (make and type) CCI 400
Recorded velocity(at 3 yards) 1845 Muzzle velocity(FPS) 1854
Standard deviation(FPS) 12 Extreme spread(FPS) 41
Sight-in-range(yards) 102 Group size(at 25 yards) .375
As you can see at 25 yards it shoots to one ragged hole - at fifty yards it shoots cloverleaf groupswhich ar close to two calibers with five shot groups. The rifle bullet is going fast enough to perform reliably out to 120 yards which means that I am always within one inch of line-of-sight.
PaulS