You are using a typical single action newbie mistake. Namely you're cocking the hammer with your strong hand thumb. The strong hand stays in place with the finger on the trigger and the SUPPORT hand's thumb is used to #### the hammer.
And in fact in fast paced cowboy action shooting the support hand doesn't really grab around the strong hand. Instead only the pinky and maybe some pressure from the ring fingers of the support hand is put against the pinky and ring fingers of the strong hand to hold the thumb up in close proximity to the hammer. This provides for easier and more consistent contact with the hammer while not letting the forces of the thumb doing the cocking of the hammer to pull the gun to the side and off target. Try it a bit to get a feel for it. Especially for faster shooting.
you probably do have the right manual. Uberti uses the same manual for a few models. A quick peek at the Uberti site shows this
http://www.uberti.com/sites/default/files/originals/product-manuals/single_action.pdf
dB
......Kinda jealous you have the 1858's.
You'll need to excuse Jr horning in on the picture. I couldn't keep him from running in and wedging between Ma and Pa just as I snapped the shutter. Jr is one of the Canadian edition NAA "The Earl"s that was brought into Canada by the now closed down Kodiak gun shop.
I have the Uberti 1875 Outlaw 45 Colt. Very nice. Haven't shot it much but expect to do so in a few weeks. I also have the 45ACP cylinder for it so I can save the cost of 45 Colt. When I got it there was no heavy oil or grease. Enjoy.
OK, you asked for it. I was trying to hold back but I can't pass up a chance like this to inflict a touch of envy and show off two of my babys.....You'll need to excuse Jr horning in on the picture. I couldn't keep him from running in and wedging between Ma and Pa just as I snapped the shutter. Jr is one of the Canadian edition NAA "The Earl"s that was brought into Canada by the now closed down Kodiak gun shop.
Oh yeah, just to add a little extra touch of class the two '58's have consecutive serial numbers....
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Torn between the 1858 conversion and the 1875 outlaw. Love the looks of the 1858 but don't want to get into front loading.

I haven't shot the black powder shells from the shotgun laying in front of me yet.



























