All the reloads I've made for this gun worked well, but my pet load worked out to be:
1. AA2520 44 grns
2. Speer Round Nose 180 grns
3. Sierra Game King 180 grns
4. Dacron 1-2 grns under the Speers (their shorter and seat out farther)
5. Remington brass
6. CCI "Benchmark" Primers
**  Both rounds were seated to MOA length of 3.075 
This load came from the LEE Manual Second addition and does not exceed max pressure.  It clocks at 2560 fps. with a max spread of 20 fps..  My rifle is scoped and it shots less than an inch with the Speer's and 1 inch to 1.25 with the Sierra's at 100 yards.  My two longest shots ever were with this rifle the second being my best so far.  First was a big doe in VA at 425 yards, the cool part was I used the apperature sight set at 400!  The second was a turkey in LA, 278 measured yards, bang... and its head flew off! 

  (Yes I was aiming for the head, but I had mounted a scope to her by then.)  
  This isn't to brag but I have great faith in my gun, a friend of mine bought one after seeing the "Turkey Shoot" and has been equally pleased with his.  I know war time production can be spotty at best, but when you get a "good .303" you have a dang good rifle.  I wouldnt trade mine for a mint, well that is when I can beat it out of my oldest son. 
 