Which valve for .30 cal?

[Daniel]

Just a little questions to the seasoned tuners:
Which "power" valve design would possibly give the best results with my  .30  caliber target rifle project
(Rapid MK2 with a 500mm shrouded barrel)
They go by so many names, rocket, high power, ... and so on, but it's hard to tell which one translates to enough power really.
Normally I'd go with the RAW one due to the fact that I could pick it up locally and it isn't crazy expensive but it's currently out of stock:

https://luchtbuks.com/nl/rawtheoben-high-power-valve-house-stem-cpl

Then there are few designs available on eBay:
from Bucketboy, Phil D (titanium), and KevG of course 
This list is sure incomplete (just the result of a brief Google search), any further suggestions, tips, advises are welcome.
Thanks in advance and happy shooting!
Cheers,
Dan

[Ca_Varminter]

I would lean towards  Dr Bob's power valve design...
Or talk to KevG, he may come up with a good solution too....

Being one of the First to make their own Valve design out of Titanium....
Everyone has their own designs and thoughts on how to maximise airflow..
Is is really a matter of trial and error in finding which valve setup suits your
shooting needs!

Btw... My design gets me consistant 70 fpe out my .22 Titanium Rapid!

Stuart

[Daniel]

"Btw... My design gets me consistant 70 fpe out my .22 Titanium Rapid!
Stuart"

Wow, that's more than I got out of my .25 barrel now, impressive!

[Aggy]

I would lean towards  Dr Bob's power valve design...
Or talk to KevG, he may come up with a good solution too....

Being one of the First to make their own Valve design out of Titanium....
Everyone has their own designs and thoughts on how to maximise airflow..
Is is really a matter of trial and error in finding which valve setup suits your
shooting needs!

Btw... My design gets me consistant 70 fpe out my .22 Titanium Rapid!
That's impressive what the spec of the gun Stuart , I am waiting,still, for a Raw co I g from your side of the pond I assume that would go higher that that , how many shots you getting
Stuart

[etiam viviens]

Assuming that the titanium Rapid is of the Chip Smidt design it has an larger plenum is it not.
still impressive but can these also be done with a normal Rapid mk 2 

[Ca_Varminter]

Assuming that the titanium Rapid is of the Chip Smith's design it has an larger plenum is it not.
still impressive but can these also be done with a normal Rapid mk 2 

Yes Your are Spot on about my Titanium baby!!
But before Chip decided to create them...
There was 220swift on then old AirgunAdvice.net, that we kept  it running.
He designed a .50 cal barrel and probe!!
To get enough Air... he made pre-chamber extension...
Something like what KevG makes...
But his mounted where the blanking plug is on the bottom of the MK II Rapid!
He was getting over 200 fpe from his design!!

Good Luck,
Stuart

[etiam viviens]

200 fpe from a .50 Theoben that is impressive 

[Ca_Varminter]

Swift also was playing with a .30 prototype...
about 140 fpe!!

Stuart

[Daniel]

That's all awesome, where can I find Chip Smidt or Swift?  Both sound just the ticket!

[Daniel]

It's Chip Smith actually, isn't it? And the other good sir lives in California...

[Ca_Varminter]

All of Us live in California......
Chip Smith lives in San Diego area..
220Swift, Ernie live in Northern California, near the Wildfires!!!

Stuart

[etiam viviens]

I am trying to google the .30 and .50 theobens butt I am not succesfull does someone has an some more information and some pictures of these monsters 

[Ca_Varminter]

Well all that info was Contained on the Old AirgunAdvice!!!!!!!
It was shut down back in 2017!!
Also with the changes with Photobucket...... A lot of Photo data was gone!!!

Stuart

[Daniel]

That's all fascinating but still don't have a valve to finalize my project 🤷‍♂️ Still waiting for an overpriced second hand one that I purchased on eBay but it's taking forever, probably get a refund instead anyways. Any of you kind sirs on the forum has some spare bits for sale?