blow back

[HizZaAa]

What kind of guns are blow back seen as a problem? because i'm confused with the blow back class. I may have followup questions

[amzng_spyderman]

blowbacks are markers that require a high pressure burst of air to push the hammer and bolt back. spyders and their clones are typical stacked tube blowbacks, meaning that the hammer is in a tube below the bolt's tube. tippmanns are inline blowbacks. their hammers and bolts are in a straight line.

[HizZaAa]

some people want to stop blow back in their guns though

[amzng_spyderman]

oh, that kind of blow back. i thought when you said "blow back class" you meant types of blowback markers. blowback occurs when a burst of air escapes around the bolt and into the feed tube. this keeps paint from feeding reliably.

[smegle5]

i had that problum me old gun, gameface bonedaddy rg, it did that alot, i probly just had velocity up too high, o well who cares its gone now.... my procarbine kiks as man yea

[Ebonclaw]

Any gun classified as a blowback is...well....going to have blowback. I wouldn't say there's any real difference as far as which one has the least amount, and it's a drawback on all of them. There are ways blowback can be minimzed or negated.
In the early days the design of the Powerfeed helped aid against blowback. The powerfeed was a slanted feed tube with a vent cut out to do two things:
Allow blowback to vent to a degree instead of going straight up the tube.
Allow an on/off knob to be added to the feed to completely stop the flow of balls to the chamber. This was an additional safety feature as well as a convenience if you wanted to dry fire....you didn't have to turn your gun upside down.
Unfortunatly, damn indiotic newbs decided that logically, a vertical feed would let balls feed faster. They just go straight down instead of through an elbow and a feed tube. Faster feed, right/ Wrong. With no way to vent the blowback, vertical feeds actually restricted RoF to about 10 BPS vs 12 and 13 on powerfeeds. Powerfeeds are getting scarce on blowbacks. The Spyder Shutter is one of the few guns that still has a powerfeed, and stock, it doesn't really need one as it's mechanical. Now the one in my SIG could pump out 13 BPS with a WAS TurboRevvy and then I switched it to the HALO-B for a max RoF of 15 BPS, hindered only by my Storm frame.
Now, we have a new way to negate blowback. Forcefed loaders. The Halo-B and the Egg II FORCE balls down the feed neck. They CANNOT be bobbled back up. Meaning if you have one of these loaders, blowback is completly negated.
Downside being the loader costs about half as much as the damn gun.