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Took the Cowboy back to the range to chronograph and shoot at 100 yds. Again, off the bench with open sights. I have recorded the shot # with the velocity next to it. All the shots at the six inch bull seemed good and on target as the rifle fired. Notice the lower velocity shots are higher that tha the higher ones. That is with Blazed 158 gr.
On the lower right is my attempt to estimate where that symbol was - can't really see it at 100 with the naked eye. First shot actually hit it. I held the next left which is where it went. Couldn't tell even with the spotting scope that it was in the symbol. This is Winchester 357 158 gr. You will see it was a bit faster than the Blazer 357 ammo. But, also notice the lower velocity rounds hit higher. Other than holding left on the one shot they all looked good when fired.
The carbine produced the opposite result with the faster rounds hitting about 2" higher. The Cowboy velocities avg about 65 fps faster with the Win 357 ammo. The Winchester ammo has a high spread of velocity. 1744 to 1891 fps in the Cowboy and 1696 to 1807 in the Carbine.
Accuracy is certainly good for hunting and if a load with a small spread could be found would likely shoot small groups.
Here is a picture of our range. Paper targets at 50 and 100 yds and steel from 125 to 400 yds.
Last edited by Old Savage on Mon Jan 21, 2008 10:32 pm, edited 3 times in total.
In the High Desert of Southern Calif. ..."on the cutting edge of going back in time"...
I've always maintained that faster ammo will print lower than slower ammo due to "time in barrel", especially with like bullet weights. Your results seem to bear that out. Good shootin' fer irons!
Griff,
SASS/CMSA #93
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GUSA #93
There is a fine line between hobby & obsession! AND... I'm over it!!
No I ain't ready, but let's do it anyway!
OS, nice pics of the range and your rifles. I have to admit I'm always impressed on how you chart EACH AND EVERY SHOT you make for velocity etc. You are a true scientist! I gotta start doing that. Funny how both rifles behave so differently with the same ammo? Wow!
Interesting targets too. It's interesting discovering what a gun likes. Why a gun 'likes' a particular ammo is a mystery that's way above my pay grade..,
Enjoyed the report and photos. Looking at your attempts to hit the little logo at the bottom right hand corner of the paper, it's interesting to see how the group loosens up slightly when you can't actually see the bullseye/logo. Not a surprise, of course. I had my eyes checked last week and should be getting my new prescription glasses toward the end of this week. It will be interesting to see how that affects my shooting.
Whoever it was said it depends on the model of rifle, I think was correct. My 1895CB prints a quite a bit higher with maximum range reloads than with lower velocity ones. I think in that case it is a combination of recoil and barrel length. So maybe the rules reverse themselves at a point of diminishing returns. On other rifles I've had the reverse experience.
Last edited by k8bor on Wed Jan 23, 2008 2:39 pm, edited 1 time in total.
Fun! 
