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Old 10-24-2012, 09:58 AM   #11 (permalink)
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^ in a closed bolt gun, detentes only prevent double feeds. A tight bore increases efficiency and prevents rollouts and keeps the ball firing from the same place in the bore each time instead of rolling a little bit. Firing from the same spot increases shot to shot consistency.

basically underboring properly gets the best all around performance. On a open bolt gun it isn't necessary, but but still improves efficiency.
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Old 10-24-2012, 10:22 AM   #12 (permalink)
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^ in a closed bolt gun, detentes only prevent double feeds. A tight bore increases efficiency and prevents rollouts and keeps the ball firing from the same place in the bore each time instead of rolling a little bit. Firing from the same spot increases shot to shot consistency.

basically underboring properly gets the best all around performance. On a open bolt gun it isn't necessary, but but still improves efficiency.
I understand the need for it to prevent roll outs where the detents are not effective for the ball in the firing position. I also understand the increase in efficiency.

However if I am in the habit of refilling my HPA tank after every game, have an open bolt marker with proper detents, and do not shoot anywhere near what the efficiency of my marker allows is there really any advantage?
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Old 10-24-2012, 10:27 AM   #13 (permalink)
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Yes, usually your fps readings will be closer meaning you won't have as many oddball fps.


Very useful for a tournament setting where you don't have time to re-chrono and a consistent gun won't bust 300 fps
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Old 10-24-2012, 10:42 AM   #14 (permalink)
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Yes, usually your fps readings will be closer meaning you won't have as many oddball fps.


Very useful for a tournament setting where you don't have time to re-chrono and a consistent gun won't bust 300 fps
Fair enough. I am having to add so many caveats that I am realizing the advantage is only overrated for me. I usually chrono around 270-280 so I don't have to worry about it.

I still, oddly enough, use inserts. I'm just not nearly as concerned as some of you are about being just right
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Old 10-24-2012, 10:52 AM   #15 (permalink)
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Old 10-24-2012, 04:00 PM   #16 (permalink)
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heh, .001" step between inserts is incredibly pointless for practical purposes, especially in an insert that is 5 inches long. Hell I bet most of those inserts are .001" or more out of round in the bore anyways
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Old 10-24-2012, 04:26 PM   #17 (permalink)
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with tolerances at that level the next question becomes

do you size your paint then bag them seperately in .001 steps =)

though having them that way is NEAT =) for the player who wants one of everything
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Old 10-24-2012, 04:28 PM   #18 (permalink)
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for the player who wants one of everything
well, that's when you stop being a player and become a collector
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Old 10-24-2012, 04:38 PM   #19 (permalink)
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Precision costs money and it strikes me that we are getting to a level of precision in this discussion that would cost a lot of money
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Old 10-24-2012, 05:09 PM   #20 (permalink)
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