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Old 08-24-2012, 04:36 PM #1
Danny96211
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Ups and downs of overboring?

I just bought a freak barrel off of someone on here for 30$ and it comes with a .693 insert. I heard that thats a huge overbore, but what are the downsides to overboring or hugely overboring? Any upsides to it? I usually shoot rps inertia and i play in upstate ny if that helps at all. Also, anyone know the bore size of rps inertia paint? Thanks

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Old 08-24-2012, 05:03 PM #2
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As for bore size, it's probably between .680 and .685/6. I don't think there's any paint manufactured larger than that. I could be wrong, there may be one or two that are bigger, but most are in that range.
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Old 08-24-2012, 06:02 PM #3
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Thanks for the info, but do you know anything about overboring? Particularly when it comes to a .693 insert?
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Old 08-24-2012, 07:51 PM #4
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Over boring in my uses cause crazy hooks and inconsistent shots, I always underbore if possile
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Old 08-24-2012, 08:27 PM #5
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I overbore cause I'm not takin chances of gettin chops from the balls swelling lol
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Old 08-24-2012, 08:31 PM #6
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The advantages to overboring are generally good consistency and reduced paint breakage (argued by some). The disadvantages are efficiency loss and reduced shot clearing after paint breaks. .689 is generally a good overbore these days woth. 693 being a bit agressive
You will get no more gains and even greater losses going bigger overbore so a slight overbore is generally best.
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Old 08-24-2012, 09:14 PM #7
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Thanks for all the info and advice everyone. I think im going to order .682 , .684 , and .687 freak inserts to go along with my .693
I dont want to order the complete kit because i think its a bit excessive and expensive.
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Old 08-24-2012, 09:30 PM #8
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I would get at least one or two underbores. No point in having multiple overbores.
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Old 08-24-2012, 10:08 PM #9
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Those are all overbores? Should i get a .679 instead of the .687 ? Will the 679 be an underbore?
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Old 08-25-2012, 02:05 AM #10
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.679 .684 .689 .692 are my favorites to keep around
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Old 08-25-2012, 04:25 AM #11
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Quote:
Originally Posted by Danny96211 View Post
Those are all overbores? Should i get a .679 instead of the .687 ? Will the 679 be an underbore?
It depends on what paint you are using at that time. but .679 is a must now-a-days.
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Old 08-25-2012, 12:01 PM #12
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ok, thanks for the advice. im just going to buy a .679 and a .684 since its only 25 bucks. thanks again.
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Old 08-25-2012, 12:22 PM #13
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Quote:
Originally Posted by Danny96211 View Post
I just bought a freak barrel off of someone on here for 30$ and it comes with a .693 insert. I heard that thats a huge overbore, but what are the downsides to overboring or hugely overboring? Any upsides to it?
Overbore- Slightly tighter shot spread, poorer efficiency- usually ~10% less shots
Bore Matched- Average shot spread, average efficiency
Underbore- Slightly larger shot spread, best efficiency- ~ 10% more shots

With an extreme overbore, I found no real diffference other than efficiency gets progressively worse. Not an issue for me as I don't need more air than whats necessary for the amont of paint I carry.

You can see the difference between bore sizes in my video here: http://www.youtube.com/watch?v=r7LMQLSfiDY
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Old 08-25-2012, 07:51 PM #14
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Quote:
Originally Posted by robertseakykr View Post
Overbore- Slightly tighter shot spread, poorer efficiency- usually ~10% less shots
Bore Matched- Average shot spread, average efficiency
Underbore- Slightly larger shot spread, best efficiency- ~ 10% more shots

With an extreme overbore, I found no real diffference other than efficiency gets progressively worse. Not an issue for me as I don't need more air than whats necessary for the amont of paint I carry.

You can see the difference between bore sizes in my video here: http://www.youtube.com/watch?v=r7LMQLSfiDY
You didn't properly represent an underbore. You generally aim for around .003 less than your paint's diameter. You used .006-.008 smaller.
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Old 08-27-2012, 11:05 AM #15
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You didn't properly represent an underbore. You generally aim for around .003 less than your paint's diameter. You used .006-.008 smaller.
Yes, but the video is meant to show the shot spread vs. bore size trend. The tighter you sqeeze the paint, the more it will affect your shot spread. Underbore > .006" and you'll make your high-end paint shoot like white box.

I'm not saying that any particular method of sizing paint to barrel is the best, they all have trade-offs. You have to decide what's most important to you.
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Old 08-27-2012, 11:35 AM #16
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wait so overboring actually gives you better accuracy??? I always thought underboring gave you a tighter shot spread...
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Old 08-27-2012, 12:01 PM #17
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Quote:
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wait so overboring actually gives you better accuracy??? I always thought underboring gave you a tighter shot spread...
No. They are the same. That video shows what happens when you squeeze your balls really tight. No one does that anyways when underboring. As I said underbore will be around 003 less
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Old 08-27-2012, 05:47 PM #18
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I had premium golds roll out of my .679 insert this weekend.
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Old 09-02-2012, 08:36 PM #19
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overboring is more accurate. underboring will give you better efficiency and like someone else said theres a lot of speculation on weather or not underboring breaks more paint.
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Old 09-02-2012, 10:42 PM #20
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Overboring does not mean using a .693 for a .679 ball, it means using what ever the next larger bore insert that allows 10 to 20 random balls from the case you will be shooting to roll down the barrel.

This allows for slight swelling and inconsistent ball sizes from manufacturing. you lose some efficiency but gain back consistency and no breaks.

I find having the full range inserts on my Freak allows for this type of sizing. My friend has only three barrel sizes, .682, .689 and .693 so it is not practical in his situation.
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Old 09-03-2012, 10:20 PM #21
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i used my .684 freak insert with some RPS Inertia paint this weekend and it worked great. It was actually an underbore. I had to give the paint a little push or blow on it lightly to get it out of the barrel. I had zero breaks in the barrel or breach. The paintballs were flying completely straight and were very accurate.
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