Barrel size for a closed bolt marker

[timetopat]

So good news i got my pump action autococker. Its a 2002 prostock and i tested it and it works as expected. No leaks and everything looks good after shooting some paintballs. I know people recommend a barrel kit for close bolt guns so the ball doesnt roll out. Good news is i have a freak barrel from another paintball gun but i want to understand what bore size i should aim for. Ive seen some people say you want to go a chunk under towards .675 and i was wondering if you all had advice for autocockers and pump ones what kind of barrel bore size you normally use?

Thanks,

[Sottyman]

Congrats on the new setup! Generally speaking, paintballs won't ever be the same size from manufacturer to manufacturer or even from batch to batch. It's best to test each bag/case of paint out. Depending on the weather, you could find yourself using a couple different inserts throughout the day (also depends on how anal you are about it). Plenty of resources out there, but here's a quick vid:

https://www.youtube.com/watch?v=8RUenwlJlqs

Hope this helps!

[nak81783]

CP .693 (or your favorite .689-ish or larger barrel) with RedLeaderSB detents. Done. Use two stacked and staggered for really small paint; I superglue them together.

https://www.mcarterbrown.com/forum/buy-sell-trade/dealers-forum/295003-autococker-barrel-detents

[Trbo323]

Congrats on the new setup! Generally speaking, paintballs won't ever be the same size from manufacturer to manufacturer or even from batch to batch. It's best to test each bag/case of paint out. Depending on the weather, you could find yourself using a couple different inserts throughout the day (also depends on how anal you are about it). Plenty of resources out there, but here's a quick vid:

https://www.youtube.com/watch?v=8RUenwlJlqs

Hope this helps!

This is an overbore solution and would require him to buy parts.

He already has everything he needs.

Yeah there is no one size answer. Depends on the paint, the batch and even the temperature and humidity on the day of play. Basically find whichever insert the paint won't roll out of and then either stick with that or go one step down from there.

Sent from my motorola edge 2024 using Tapatalk

[markdem]

Laser-cut / 3d-printed detents are another option to stop rollouts