Need help choosing a tightbore

[DarkAgent]

madbull v2 are amazing. version 1 where kinda lame as far as accuracy goes but some modification they did to there design now makes them incredible.

I have a KM 509mm (i think might be a different length) in my aug and a madbull v2 in my m4. (cant think of the length right now) even with the shorter barrel the m4 shoots more consistently then the aug. (was the exact opposite with stock barrels.)

[PsycoticClown]

Hmm, so those twisted barrels aren't any good for anything shooting hotter than 350? Dayum!

[Caped_crusadar]

Originally Posted by PsycoticClown

Hmm, so those twisted barrels aren't any good for anything shooting hotter than 350? Dayum!

yea, but id pick it above any 400 fps w/ a tightbore anyday. it gives a nice stright flat trajectory, that is very predictable

[PsycoticClown]

Ahh, Ok.

How are the 6.01 tightbores, worth the money? Much better than a 6.03/6.04 or is it just a waste of the money?

[Caped_crusadar]

Originally Posted by PsycoticClown

Ahh, Ok.

How are the 6.01 tightbores, worth the money? Much better than a 6.03/6.04 or is it just a waste of the money?

they are good, but i recommend them for only M4 length AEG's, or spring/gas snipers.

in an AEG there isnt enough air volume for the barrel, so you loose some fps

[Azathoth]

Continuing the tightbore talk,

Has anyone experienced any problems with hopups not sealing properly (or working as effectively) after a tightbore upgrade.

The outer diameter of these tightbores are the same as stock but with a smaller inner diameter (obvously), thus the rubbers need to be thicker right to make a contact with the bb and seat the bb in place. Or is my assumption incorrect?

As for the FPS on a grooved Tightbore. Is <350fps a hard number or is that 350ish? what happens when you go beyond this 'limit'?. I guess i can shoot .30's or .28's for a FPS reduction.

[Caped_crusadar]

yes, but we are talking about HUNDRETHS of MILLIMETERS difference, from 6.08 to 6.04-6.01, thats 4-7 HUNDRETHS of a MILLIMETER,

and its not specifically 350 fps, its 1 joule, which is the 350 fps range, it works best around 350, +-10 fps, but will still but is still an improvement within 20 fps

[Amos]

Originally Posted by Azathoth

Continuing the tightbore talk,

Has anyone experienced any problems with hopups not sealing properly (or working as effectively) after a tightbore upgrade.

The outer diameter of these tightbores are the same as stock but with a smaller inner diameter (obvously), thus the rubbers need to be thicker right to make a contact with the bb and seat the bb in place. Or is my assumption incorrect?

As for the FPS on a grooved Tightbore. Is <350fps a hard number or is that 350ish? what happens when you go beyond this 'limit'?. I guess i can shoot .30's or .28's for a FPS reduction.

No you can't shoot heavier ammo.

The "Limit" is chronographed with .20g BB's.

[Azathoth]

Originally Posted by Caped_crusadar

yes, but we are talking about HUNDRETHS of MILLIMETERS difference, from 6.08 to 6.04-6.01, thats 4-7 HUNDRETHS of a MILLIMETER,

and its not specifically 350 fps, its 1 joule, which is the 350 fps range, it works best around 350, +-10 fps, but will still but is still an improvement within 20 fps

Thanks for the clarification. was really helpful.

[Kos-Mos]

6.01's are not losing FPS because of airflow... what the heck are you talking about.

It should be the opposite., your have LESS internal volume, so you would need LESS air to push the bb.

Ir reduce FPS because the BB will bounce a LOT more on the inside of the barel, thus reduceing the speed.

It will however help stabilise the flight before exiting.

Best bore is 6.03 under that, you start to lose FPS, above that, the effect can be better.

I am using 6.04.

[Crunchmeister]

I just installed a Deep Fire 6.04 stainless steel in my M15 rifle. Works quite well at the short ranges I could try it at indoors. Can't wait to try it outdoors to see the results.

[Caped_crusadar]

Originally Posted by Kos-Mos

6.01's are not losing FPS because of airflow... what the heck are you talking about.

It should be the opposite., your have LESS internal volume, so you would need LESS air to push the bb.

Ir reduce FPS because the BB will bounce a LOT more on the inside of the barel, thus reduceing the speed.

It will however help stabilise the flight before exiting.

Best bore is 6.03 under that, you start to lose FPS, above that, the effect can be better.

I am using 6.04.

i was referring to the tighter seal that the bb has to the barrel, less air can flow past, so you need more air flow behind it, and with a longer barrel, thats harder to achieve

[Styrak]

Originally Posted by Caped_crusadar

i was referring to the tighter seal that the bb has to the barrel, less air can flow past, so you need more air flow behind it, and with a longer barrel, thats harder to achieve

Referring to your other post, in any AEG you'd GAIN FPS, not lose it.

[13Fido13]

I've recently put a Prometheus 6.04 into my G3-SG1 and I must say that it is quite an improvement. The new metal body has helped to keep the barrel straight for the first time in a year, so the trajectory is quite predictable.

[Caped_crusadar]

Originally Posted by Styrak

Referring to your other post, in any AEG you'd GAIN FPS, not lose it.

if you dont believe me, get a 24 inch front end, and put a 6.01 tightbore in it, and crono it.