Well,

Although the Doctor said I should wait 6 - 8 weeks before shooting, I know he must have been talking about bigger calibers, not a 303 Savage. So, I figure 3 weeks and 5 days is long enough to wait, and I headed to the range. When I was finished shooting, my face was sore from the ear-muffs, not from the recoil. (I'm going to try the 8x57R next.)

I'm sure this 303 Double was originally regulated with 190g silver-tip factory ammo. All I had for testing was 2 boxes of generic "white box" custom loads with 170g Flat Point bullets. Once I make all this ammo into "empty brass", I'll reload with proper 190g bullets at the factory velocity of 1980 fps, the velocity of the day.

Here below are the first 6 shots fired in this rifle since it was made in 1949. Although I'm sure the rifle is capable of better groups, with the proper bullet weight, all 6 shots would have hit the heart of a Grizzly or Moose at 50 yards. Note that the barrels have crossed, likely due to the lighter bullets.