Bill Calfee
Gun Fool
Testing the Duke of Earl in Finland
CYA friends:
I'm used to center-to-center group measurements at 50 yards.
The new owner of the Duke sent a wonderful letter and two test targets, which I'll admit I don't fully understand.
Here's the better of the two targets, the other was 13.5mm, this one is 11.5mm.
To me, if I rough calculate mm to inches, then subtract .222" from the total, I get the C to C group size at 50M.
Next, if I subtract 10% from the C to C at 50M total, I get roughly what the C to C group size would be at 50 yards, which I can relate to.
With my rough calculations, I get a 50 yard C to C group size, for 10 rounds, @ .203"
___________________
OK, the parts I don't understand:
By the way, you can read the actual size for these parameters on the test result paper below the bull.
Here's the height of the group, as I see it.
______________________
Here's the width.
___________________________________
Here's the way I see the overall group size......outside to outside on all of these pictures.
________________________
Here's what confuses me:
The height of this 10 shot group, and the width, are almost identical to each other, by rough measuring the picture of this 10 shot group.
The overall group size, as I see it from the picture, is only about 15% larger than either the height or the width.
Yet look at the height, width and shot group diameter figures listed.
Anyway, 10 shots in .200" at 50 yards, if it can be repeated consistently, isn't bad at all........in the real world.
Maybe that 11 year old ratchet has some life left after all........
Your friend, Bill Calfee
CYA friends:
I'm used to center-to-center group measurements at 50 yards.
The new owner of the Duke sent a wonderful letter and two test targets, which I'll admit I don't fully understand.
Here's the better of the two targets, the other was 13.5mm, this one is 11.5mm.
To me, if I rough calculate mm to inches, then subtract .222" from the total, I get the C to C group size at 50M.
Next, if I subtract 10% from the C to C at 50M total, I get roughly what the C to C group size would be at 50 yards, which I can relate to.
With my rough calculations, I get a 50 yard C to C group size, for 10 rounds, @ .203"
___________________
OK, the parts I don't understand:
By the way, you can read the actual size for these parameters on the test result paper below the bull.
Here's the height of the group, as I see it.
______________________
Here's the width.
___________________________________
Here's the way I see the overall group size......outside to outside on all of these pictures.
________________________
Here's what confuses me:
The height of this 10 shot group, and the width, are almost identical to each other, by rough measuring the picture of this 10 shot group.
The overall group size, as I see it from the picture, is only about 15% larger than either the height or the width.
Yet look at the height, width and shot group diameter figures listed.
Anyway, 10 shots in .200" at 50 yards, if it can be repeated consistently, isn't bad at all........in the real world.
Maybe that 11 year old ratchet has some life left after all........
Your friend, Bill Calfee
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