Barrel Length to Power in Joule

[MrFleak]

So, I installed wolverine bolt in my new TM vsr 10. Quite happy since it is the first time I've done something like this.

The max power with .4 I get (120PSI) is 1.9Joule. My field limit is 3Joule for bolt-action snipers  I do not wish to use more than 120PSI since it is the max recommended PSI. I have a 6.01 inner barrel so the only thing that I know of that can make my rifle shoot stronger is the barrel length. I have the TM vsr 10 Gspec so the inner barrel is 303mm if I'm not mistaking.

The question is, what length do I need to make it shoot 3-3.5Joule? I really, really, really like silencers so, that kind of adds up to the length a bunch and if I go straight for 550mm + silencer, that is some scimitar right there and I don't really know if it is as long as I think since I unfortunately have no comparison or way to check it. I would like to have approximately 3.5Joule power at around 110PSI(Preferably with 90-100PSI) with as short barrel as possible.

Was hoping that 430mm would be enough but, I'm guessing it wont? Will maybe 500 do the trick then or do I have to go 550? Also how long is really 550? And can I take any VSR 10 compatible outerbarrel?

Might have forgot to add some information, tell me if I did. Totally new to HPA.

Thanks in advance!

 

[Adolf Hamster]

isn't 3 joules a bit spicy for an english site?

 

[alxndrhll]

First and foremost, where on earth is using those limits?

On to the question. General reports on the usual Facebook groups seems to be that a barrel in the region of 430mm, with a good air seal is achieving 2.2-2.3 joules anywhere between 80-110 PSI. I’m assuming this variance is down to a combination of air seal, hop up components and barrel bore.

Based on that you’ll want it longer than 430, how much longer? Not a clue. Probably worth jumping into that group and asking, most folks on this forum would be aiming for 2.3 joules given our limits.

 

[DerDer]

Glad I don't play airsoft in Norway. 

 

[Adolf Hamster]

Glad I don't play airsoft in Norway. 

that where he is?

would make sense, heard there are some mad limits over there.

 

[MrFleak]

First and foremost, where on earth is using those limits?

On to the question. General reports on the usual Facebook groups seems to be that a barrel in the region of 430mm, with a good air seal is achieving 2.2-2.3 joules anywhere between 80-110 PSI. I’m assuming this variance is down to a combination of air seal, hop up components and barrel bore.

Based on that you’ll want it longer than 430, how much longer? Not a clue. Probably worth jumping into that group and asking, most folks on this forum would be aiming for 2.3 joules given our limits.

The cold up north is making people a bit nuts We need some heat from the bbs

I will try the facebook group you linked and thanks for that. I did actually get so many o-rings with the kit but, since I am new to this, didn't really understand what to do with them. I haven't tested the air seal yet, I will do this very soon. Just wish i had a long barrel to try holding it to see how it feels

Glad I don't play airsoft in Norway. 

isn't 3 joules a bit spicy for an english site?

You guys are welcome to join any time