lazareth1 Posted October 5, 2019 Share Posted October 5, 2019 Hey follow 'softers! I'm planning to upgrade my inner barrel by swapping it out from a 6.03mm diameter to 6.01mm which will increase the fps. Problem is my rifle is currently a little under the red line for most of my outdoor fields and I was wondering how much of an fps increase would be after my upgrade? I understand it's just one of those things that is 'how long is a piece of string?' but a few experiences would help me judge a bit at least. Oh forgot to add, It's an M4A1 so 363mm length barrel. FIA Laz Link to comment Share on other sites More sharing options...
Asomodai Posted October 5, 2019 Share Posted October 5, 2019 It will likely increase the FPS by at least 10. I would suggest ordering a shorter barrel or changing the spring Link to comment Share on other sites More sharing options...
lazareth1 Posted October 5, 2019 Author Share Posted October 5, 2019 12 minutes ago, Asomodai said: It will likely increase the FPS by at least 10. I would suggest ordering a shorter barrel or changing the spring Yeah 15 fps on .2g bbs was my rough guess. Anyone else's experiences? Yeah think I'll change/cut the spring if needed if i go over mate Link to comment Share on other sites More sharing options...
E21A Posted October 5, 2019 Share Posted October 5, 2019 Why not just get a better quality 6.03 barrel? Link to comment Share on other sites More sharing options...
lazareth1 Posted October 5, 2019 Author Share Posted October 5, 2019 8 minutes ago, E21A said: Why not just get a better quality 6.03 barrel? For a little better accuracy. I know there's a bit of debate on this but I've looked up plenty of info and it's all the same the 6.01mm gives better groupings. Link to comment Share on other sites More sharing options...
E21A Posted October 5, 2019 Share Posted October 5, 2019 Better than what? A standard barrel? Sure, but that’s down to better quality than bore size. Link to comment Share on other sites More sharing options...
Asomodai Posted October 5, 2019 Share Posted October 5, 2019 12 minutes ago, lazareth1 said: For a little better accuracy. I know there's a bit of debate on this but I've looked up plenty of info and it's all the same the 6.01mm gives better groupings. Hmm I would just go with a better quality 6.03 and not risk the possible BB jams, and not having to take apart the gearbox to change the spring myself. Link to comment Share on other sites More sharing options...
lazareth1 Posted October 5, 2019 Author Share Posted October 5, 2019 Hmm you guys maybe right. Also, it seems it's impossible to get a prommy 6.01mm 363mm tightbore. Link to comment Share on other sites More sharing options...
Guest Yukarin Posted October 5, 2019 Share Posted October 5, 2019 Groupings = Bore quality, not bore dimensions. Link to comment Share on other sites More sharing options...
Sneaky Posted October 7, 2019 Share Posted October 7, 2019 I would leave it. Link to comment Share on other sites More sharing options...
lazareth1 Posted October 12, 2019 Author Share Posted October 12, 2019 Cool so looking at a prommy 6.03mm then 😊 Link to comment Share on other sites More sharing options...
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