Snowpeak Snowpeak PP750.Can I squeeze anymore power?

coomo said:

Hi Guys.My current obsession is too get my PP750 to 24fpe.Currently im getting just under 23fpe.With exact jumbo RS 13.43 grain im getting 860fps
Current specfications:
14 inch Weirauch barrel.
transfer port barrel & valve increased to 5mm.
Huben dream regulator.Current output is 10.5 mpa.(this has been optimum setting)
CRC Precison plenium.(has 8mm port)
hammer spring fully wound in, back off 1/2 turn.
Any other mods suggested.Hammer springs, pellet probe shaving.Any input gratefully recieived!
This began as a 6fpe pistol (legal UK limit)
(View attachment 595203It is now classed as a firearm,and is on my Firearms certificate)

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what caliber is it? I've got a few ideas but I need more information about it
can you please convert for me the regulator pressure to PSI..I have trouble with that
would be great to get a conversation going PM.. the pistol you have, highly modified.. I'm familiar with the pp750 stock one.. it's basically what I call a left hand umarex notos lots of parts interchangeable..
I'm actually going the other way, converting pp700 and notos to compacts.. I got a machine shop to do the air tube and I have my own machine shop that I can do the rest..
been doing machine work for other members as a hobby.. so they only pay shipping and materials they usually send or if I have a piece around the shop..
I'd love to help you get what you want!
right now it's very hard if not impossible to get the pp700 or the pp750 here in the USA.. things keep changing..is what it is..
if you want to get into it PM me and I'll share contact info..
best luck and wishes getting exactly what you want
Mark

markhooper said:

what caliber is it? I've got a few ideas but I need more information about it
can you please convert for me the regulator pressure to PSI..I have trouble with that
would be great to get a conversation going PM.. the pistol you have, highly modified.. I'm familiar with the pp750 stock one.. it's basically what I call a left hand umarex notos lots of parts interchangeable..
I'm actually going the other way, converting pp700 and notos to compacts.. I got a machine shop to do the air tube and I have my own machine shop that I can do the rest..
been doing machine work for other members as a hobby.. so they only pay shipping and materials they usually send or if I have a piece around the shop..
I'd love to help you get what you want!
right now it's very hard if not impossible to get the pp700 or the pp750 here in the USA.. things keep changing..is what it is..
if you want to get into it PM me and I'll share contact info..
best luck and wishes getting exactly what you want
Mark

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coomo said:

Hi.Its a .22. I was running 1500 mpa.Then whilst at range dialling my sights in, my bottle pressure began to drop.for some reason
I decided to chrck the chrono , and power was up.I eventually settled at 10.5 mpa which is about 1500 psi.
Im not actually sure what else I can do to increase power.I dont need any work done yet but ill bear in mind thanks Mark.

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you could try going to 1900 PSI regulator pressure.. that's the factory setting on the umarex notos and it's basically the same gun.. although you have modified it so much that you are down to the action for original parts ..
nice gun.. great job
mark

Crank the reg up to 2200 psi. Back the hammer spring all the way back and turn it in 1/8 turns until the speed drops, back off 1/4 turn.