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Post by zeus on Oct 22, 2022 7:08:02 GMT -5
I can second Glenn’s statement on not setting back the barrels on factory guns - I got that .012 gap Blackhawk from him 🤣🤣🤣🤣 Which one was it? I wonder if I ever shot it? 🤣 |
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Post by zeus on Oct 22, 2022 7:18:08 GMT -5
This thread has put a emphasis on why forums are important... We all get to post what we find important and what works for us as individuals. For me, this is far more educational than reading a written article by a single source. While that's OK too, multiple inputs work better. These learning points have been a mainstay in my customs. While many post about expensive grips, cch colors, pivot pin and screw colors, etc...I try to focus on lockup, alignment, throat size, barrel gap, forcing cone, etc. No such things as right and wrong, just different. I used to tinker and try to tighten up a factory ruger. And I think there are some things that help some guns. But I also have seen that you can make accuracy worse tightening up lockup etc if alignment is not great on that particular cylinder. I explained it to myself that the “looseness” of the cylinder let it self align during ignition. Not sure how accurate of a statement that may be but it would explain the decrease in accuracy when everything was tight leading to slight alignment issues. I think a good trigger job by someone that knows what they are doing that doesn’t affect timing is money well spent as the factory let off definitely has a lawyer attached to it 🤣 making sure throats are properly sized would be the other that I think is a valuable modification of it needs it. |
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Post by Encore64 on Oct 22, 2022 9:23:54 GMT -5
Yeah, I've had that happen too. I usually go back with an oversized cylinder latch and remove steel from whichever side I need to correct alignment. But, I confess to being OCD...
NOTE: I did encounter a cylinder where the chambers were not equally spaced. There was no way to get all chambers to align.
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Post by junebug on Oct 22, 2022 10:21:59 GMT -5
Kim Not questioning anything you said, just doing the math and the numbers sure sounded nice, heck I even got the calculator out  . Just shows how misleading numbers can be when all the variables are not allowed for. These are great posts because they make us think, and question, numbers and variables. few things are as simple as they seem to be. I shoot silhouette with a friend who has a Freedom Arms 44 with a .002 gap that shoots cast bullets. He shoots Creedmoor position WITHOUT a blast shield with no damage to him or his pants. Try that with my Ruger .44 and you will be picking powder out of your leg and sewing up holes in your jeans.  |
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Post by bushog on Oct 22, 2022 12:15:22 GMT -5
Too tight not always good…..
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Post by potatojudge on Oct 22, 2022 12:41:52 GMT -5
A tight gap requires minimal endshake, so if sending a revolver off for barrel setback you may as well confirm acceptable barrel/cylinder alignment (using whatever base pin you're going to stick with, factory or Belt Mountain) then:
correct endshake
set barrel back
recut forcing cone
crown barrel
correct cylinder throats
So you can't really claim a scientific approach while changing multiple variables at once.
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Post by Encore64 on Oct 22, 2022 13:06:35 GMT -5
A tight gap requires minimal endshake, so if sending a revolver off for barrel setback you may as well confirm acceptable barrel/cylinder alignment (using whatever base pin you're going to stick with, factory or Belt Mountain) then: correct endshake set barrel back recut forcing cone crown barrel correct cylinder throats So you can't really claim a scientific approach while changing multiple variables at once. Agree 100%. With obscene shipping charges these days, I always ask the gunsmith to correct everything possible on my guns while they are in hand. I prefer my guns super tight. Clements trues action, puts new front and rear cylinder bushings, trues front of cylinder and back of barrel to get barrel gap tight. I've always found it money well spent. I've personally measured Ruger Blackhawk Cylinder Gaps from <.0015-.015". While most run .0035-.006", nothing should be taken for granted. |
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. Just shows how misleading numbers can be when all the variables are not allowed for. These are great posts because they make us think, and question, numbers and variables. few things are as simple as they seem to be. 
