Yes, the tippmann 98 and the tippmann custom are the same marker, therefore the threading of the barrel will be the same.
All you must do is purchase an A5/X7 threaded flatline barrel and screw it in, becasue they have the same barrel threading. 98 threaded barrels will not work.
yes
They are both around the same performance. The J&J may be slightly better, being ceramic.
"Good" is a relative term. The flatline is curved in such a way that it puts backspin on the ball, causing its trajectory to be flatter, making it go farther. With this, it Also decreases accuracy slightly because it exaggerates any dented or dimpled areas on the paintball, because it is now spinning. For any Mid or Cover Player, the flatline is a great tool for increasing range. However It is not recommended for Front players or "snipers" because it decreases accuracy. A better option than the Flatline is the APEX barrel which does exactly the same job of backspin, but is adjustable in shot length (which is inversely proportional to the accuracy) and can be turned left and right for hooking shots or bunker shots (which fly down rapidly).
The Project Salvo has Tippman 98 Custom barrel Threads.. Same with the Alpha black
No. The tippmann sl-74 I and sl-74II are threaded for sl-74. The tippmann pro-carbine is pro-carbine threaded. The Tippmann 98 is 2 different threads, they changed half way through production. An older barrel may not work on a newer gun because of tighter tolerances in the older stuff, but you can buy adapters if you happen to get into a jam like this. (Mostly you don't have to worry about this unless you get EXTREMELY unlucky) Tippmann a-5's are threaded for a tippmann a-5 adapter witch then screws into the gun. Tippmann x-7's are the same thread as a-5's. Hope this helps!
All markers generally go the same distance, unless you have a specific barrel that adds backspin to the ball (apex barrel or flatline barrel). Typically they range in the area of 75 to 100ft. Much of this depends on the velocity.
The Apex barrel is BT's upgrade to the Tippman Flatline barrel. It allows the shooter to "curve" the ball around or "dive bomb" over the top of bunkers by putting a spin on the ball. It also will allow the shooter to get extra distance out of a shot by putting a back spin on the ball. How the it works is the tip of the barrel has a ridge that gives the ball a spin like a curve ball or a spin on a ping pong ball. You can get the same effect by turning a Flatline on the side.
For short barrel, Tippmann makes a 3 inch "smg" barrel. (this will decrease range and accuracy) For an accurate barrel, a Custom products two piece 12-14 inch are cheap and consistent barrels. (this depends on paint quality) For a light barrel, The Azodin or stiffi Carbon fiber, or Carbon wrapped barrels weigh much less than pure aluminum. (my AZ 16 weighs the same as 14 us quarters) For longer range, An Apex barrel is the most adjustable and usable. Like a flatline barrel, in creates backspin, causing the ball to go farther. It has 8 settings of spin as well as being able to rotate 360 degrees, for long shots, hook shots and drop shots. (The more you increase spin, the less accurate and fast the paintball becomes.) If you want a Milsim look, a CP tactical, or any rap4 shrouded barrel will look great.
No. the thread pattern is NOT the same
they will be about the same since they both have the same porting on them, between 12"-16" you wont see a performance or noise difference