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Old 07-16-2018, 12:54 AM   #1 (permalink)
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My opinion on barrel kits, not that anyone should care.

I'm getting lazy and love driving people to this site, so I'm going to paste a response made to a question I keep running into on the book of faces.

Ignore, disagree, send me a PM with threats, I don't really care. This is 100% option by someone not pretending to be an expert. I just didn't know where else to put this.

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Aight, so I'ma lay into this a bit.

Does paint to bore match matter? Yes, but you're chasing decimal points of performance. Factually 0.001 to 0.005 increments.

If you want good accuracy/consistency, get good paint! That is the #1 thing. Good paint!

Barrels and barrel kits are an attempt to be more adaptable when you can't necessarily control your paint.

Nothing solves $hit paint (inconsistent bore size, shell integrity, etc). Just over bore and pray in this scenario.

Even good paint is a food product and humidity, temperature, everything affects it. Even a single case can change size on a given hot day.

Most common options, from cheap to expensive (roughly):
Tape, nail polish, CCI detent rings (not sure if they work on guns that aren't phantoms, but they're about $10), iFit 2" kits (huge range in bore sizes), freak 5" kits (middle of the road on quality and price), freak 8" XL kits (and similar), custom bore barrels (Lapco Bigshot and Parabolic Phi are hugely popular).

Now should you get them?

It sounds like you're experiencing inconsistency, so there is a reason for you. Some people don't notice/ don't care. But you don't sound like one of those people.

Budget dictates quality and range in bore sizes, so Google some of the things I've listed before you go freak, but the 5" freak sets are widely accepted as a standard. You can get Carbon fiber Deadlywind barrels to whatever aluminium barrels that will accept freak inserts.

They are the android phones of barrel kits. Almost everyone's got one.

If money was no object, I'd definitely suggest the Parabolic barrels (Phi- one piece and Thin Air- two piece), because they are based on current scientific understanding of barrel physics. But I notice you're concerned about bang for buck, which isn't a bad thing.

A handful of the smaller bore freak kits is a pretty good and safe starting point. But there are cheaper options (iFit particularly).

What kind of a difference can a barrel kit make?

Here's one example. Mike at CCI Phantom is able to change a +/-1 feet per second (fps) variance with a correct bore to barrel match to as much of a +/-20 fps variance with an incorrect bore match. That's 20 feet variance for every second your ball is in the air. I've played in this scenario, it sucks. But presumably the opposite is true. If you were experiencing a +/- of 20 with your stock barrel, then there is a chance a kit could get you to +/-1. That's only 1 foot variance for every second of air time. Most people call that shooting ropes.

Just realize, whichever you decide, adding a kit means you'll likely be adding some time at the chronograph to confirm a good bore match, just try not to spend all day there.
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Old 07-16-2018, 01:12 AM   #2 (permalink)
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I started with freaks, and a simple detent has gotten me to leave the freaks.
But.... can paint to bore match increase efficiency? My automag pistol gets about 15 shots off a 12 gram. I have been thinking about using freaks to squeeze out a few more shots.
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Old 07-16-2018, 01:30 AM   #3 (permalink)
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I like UL backs
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Old 07-16-2018, 01:32 AM   #4 (permalink)
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Yes underboring with a barrel kit increases efficiency. It's the easiest quality to document. For example, if I chrono my automag to 280 w/ my 0.693, it'll be shooting 310+ with the 0.688. Back the pressure down to 280 again, that's air saved every shot.
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Old 07-16-2018, 03:20 AM   #5 (permalink)
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Closed bolt vs open bolt is quite a different ball game too. I use my freak backs for different purposes. The ball needs to be right in front of the bolt for consistency. A sharp pump and it could roll a bit, or a lot. I do like the detent on my ghost. Being able to over bore on lousy paint days is a nice card to hold. But an efficient bore gets me over 40 shots.
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Old 07-16-2018, 09:31 AM   #6 (permalink)
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Can someone give a ELI5 explanation of why those parabolic barrels are good?
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Old 07-16-2018, 09:43 AM   #7 (permalink)
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Can someone give a ELI5 explanation of why those parabolic barrels are good?
It's like a great aunt hug. First you are squeezed near death, then a brief reprieve allowing equal airflow, then a final death squeeze to make you remember.
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Old 07-16-2018, 09:45 AM   #8 (permalink)
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So it goes control bore - open bore - control?
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Old 07-16-2018, 11:11 AM   #9 (permalink)
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It's like a great aunt hug. First you are squeezed near death, then a brief reprieve allowing equal airflow, then a final death squeeze to make you remember.
So what PPS has been doing for years?
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Old 07-16-2018, 11:39 AM   #10 (permalink)
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So what PPS has been doing for years?
No, more like copying Inception. The stepped bore is tighter than traditional. Like a 685 back with a 690 front. Thin Air sells like a 690 and a 695 front. The parabolic term seems to be just a marketing label, not really a describing feature like Palmers.
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