Regards to all members I wish you all to have the best airarms, good sight and joy using it. I am new member. Tried to find experiences and opinions about upgrade snowpeak p35 22 cal. With huma regulator and plenum. I would like to do it but i am not sure what benefits i can get. Can i get higher pellet energy and how much. Some more details if somebody did that or at least some link where to find these details.
- The AGN App is ready! Search "Airgun Nation" in your App store. To compliment this new tech we've assigned the "Threads" Feed & "Dark" Mode. To revert back click HERE.
Snowpeak Snowpeak p35 upgrade
- Thread starter Lakicd
- Start date
Are you thinking of adding the Huma regulator because you are having problems with the SPA regulator or because you need it to add the plenum? I am happy with my P35 regulators so I added the Xtreme Airguns external plenum to my P35-25. I got about another 40 fps. I think the Huma plenum is smaller so you'd probably get less. Not sure what the caliber difference does. I don't really think my P35-22 needs a bigger plenum, however. It likes 21 grain H&N Baracuda Match and shoots them about 830 fps. I haven't even tried turning the regulator up to speed them up because it shoots them so accurately. I find is is very effective on squirrels and even took a small raccoon for me. I would not want to mess it up trying to tune if for more power when it has plenty for what I want to do with it as it is.
Upvote 0
how many cc does that Xtreme Airguns plenum have, and what did you adjust on the gun, is it necessary to change the hammer spring? do you shoot slugs or pellets with .25call?
Upvote 0
I think the Xtreme Airguns plenum is 35cc. Stock is 10cc. So it is a significant improvement but is still close to half the size of some airguns (apparently including the new P35X). I drilled out the barrel port and transfer port and path between them a little. Went from 75% to 85% of bore diameter. That added about 10 fps. Plenum was more like 40 fps. Adding plenum does not require the moderator or hammer spring to be adjusted. I adjusted both, however, because I was trying to push 34 grain JSBs over 800 fps. I got there but only barely. My final tune is 48-49 fpe. I am still testing projectiles but JSB 33.95 Mk11 and FX 34 grain seem to be the most accurate. H&N 34 grain slugs and Nielsen 26.8 grain slugs were fairly accurate. There may be a slug that would shoot as well as the 34 grain pellets, I was just shooting what I had on hand. I'll probably just stay with the pellets. I discovered that I do not have a strong enough hammer spring, even with shims, to open the valve fully if the regulator is set above about 135 bar. When I set it higher the velocity was less than when I dropped back to about 135.
Upvote 0
do you have any pictures of what you did on transfer port? at how many bars is the regulator set by factory? 120?
Upvote 0
I don't have any pictures of the transfer port. It is a removable piece that seems to be made of stainless steel. If you degass and remove the air cylinder the valve will fall out and behind it will be the transfer port with the long axis pointed up towards the barrel. The barrel port, transfer port, and the path between them were all 3/16th of an inch (that was the largest drill bit they would accept) which is about 75% of a .25 bore. I increased it just over 1/64ths of an inch. I have a set of number drills and one of them, may have been a #3, was just slightly larger than 13/64. That makes the path about 85% of the bore. I drilled out the whole path, the barrel port, the transfer port, and the path between them. Then I had to clean up the chips. I have a drill press and was comfortable doing it but I don't think everybody would want to do this for the modest benefit. You have to be careful to keep the transfer port aligned with the hole in the block or you won't gain anything. There are no marks you can use for alignment. I also have diamond grit ball head dremel tools I used to clean up the holes.
My regulator came set 135-140 bar and this is about all the stock hammer spring can open. I wouldn't increase it unless you know you have some hammer spring margin. My P35-177 is more like 120 bar, maybe lower.
My regulator came set 135-140 bar and this is about all the stock hammer spring can open. I wouldn't increase it unless you know you have some hammer spring margin. My P35-177 is more like 120 bar, maybe lower.
Upvote 0
Hi, this is my P35. 6.35
I put in a huma regulator with plenum is at 145 bar.
Made a carbon shroud including in the shroud Are the moderator to silence it.
Put a tripod on it.
Made a regulator for the hamerspring at the back.
Put some nice shrink tube over the airtube.
And my Hawke Vantage 3-9 x40.
It has been completely dismantled and everything has been polished, including the barrel, the crown and where the pellet goes in.
It shoots great with the snowpeak 6.35 mm. 25cal pellets 1.65g 25.46gr.
I put in a huma regulator with plenum is at 145 bar.
Made a carbon shroud including in the shroud Are the moderator to silence it.
Put a tripod on it.
Made a regulator for the hamerspring at the back.
Put some nice shrink tube over the airtube.
And my Hawke Vantage 3-9 x40.
It has been completely dismantled and everything has been polished, including the barrel, the crown and where the pellet goes in.
It shoots great with the snowpeak 6.35 mm. 25cal pellets 1.65g 25.46gr.
Upvote 0
Thanks, my next one is gonna be the snowpeak m25 just don't now yet what Cal i am gonna take
Upvote 0
Nice and sleek looking gun!
How did You do that HS adjuster? Some detailed pictures please?
How did You do that HS adjuster? Some detailed pictures please?
Upvote 0
I took out the hammer spring screw. Then I drilled a hole in the middle of the screw, tapped wire in it, I then put a piece that I had lying around from an old rifle with a hexagonal bolt put that in the hammer spring screw with loctide . Then I made a little room in the rifle butt so now I can just turn it to change the tension on the spring, this works great
.I get 61 joules and 891 fps out of this little puppy.Upvote 0
thanks for the detailed answer, I'll think about whether I'm going to drill the part between the barrel port and the TP, I'm a little afraid to do it because after that there's no going back
Upvote 0
did you have problems with the factory regulator and that's why you changed it?
with factory settings and with jsb exact king 1.645g (25,39gr) i achieve 230m/s (754fps). and that's not enough for me, and that's why I'm planning to add a plenum, that huma plenum is 12cc, right?
Upvote 0
I had no problem with the original regulator but I wanted a larger plenum so I put in the regulator with plenum of huma, it still needs to sit a bit.
I also enlarged my ports to 5mm.
These are my first test shots on the FX Chronograph.
Notes
Bullet : 25.46 gr snowpeak p35
Weather: 0.7°C 3.3 m/s overcast clouds 1013hPa/mbar 29.91inHg 98%
Shot count: 14
Low: 837
Hi: 898
Avg: 869
STD Dev: 20
Spread: 61
2024-01-06 18:29:26;895;FPS;61.5;J;
2024-01-06 18:29:58;881;FPS;59.6;J;
2024-01-06 18:30:09;875;FPS;58.6;J;
2024-01-06 18:30:17;888;FPS;60.5;J;
2024-01-06 18:30:24;898;FPS;61.8;J;
2024-01-06 18:30:30;877;FPS;59.0;J;
2024-01-06 18:30:37;879;FPS;59.3;J;
2024-01-06 18:31:10;872;FPS;58.3;J;
2024-01-06 18:31:17;881;FPS;59.6;J;
2024-01-06 18:31:22;840;FPS;54.1;J;
2024-01-06 18:31:27;851;FPS;55.6;J;
2024-01-06 18:31:37;851;FPS;55.6;J;
2024-01-06 18:31:42;837;FPS;53.8;J;
2024-01-06 18:31:49;842;FPS;54.4;J;
Upvote 0
You were off the reg for the last 5 shots. Before that your lowest velocity was 872, highest 898 for a 26 ES. You are making good power but I would mess with the hammer spring to see if you can't flatten it by around 50%. I am easily under 10 fps on short strings with all three of my P35s.
Upvote 0
Thanks, i now the last 5 where off the reg
. I can easily control my hammer spring, this was just a test. Upvote 0
I use home made wooden stocks on my P35s now. When I do the inletting I deliberately put the action a little higher in the stock than it was in the original plastic stocks so I have better access to the hammer spring. In the plastic stocks, I epoxy glued a #10 washer to the stock to shim the action up a little. The knurled nut idea is interesting but my approach is just to make the hex opening of the stock nut more accessable.
Upvote 0
I also thought about making a wooden stock, but I think that's a lot of work. Would rather buy one than but its not to be found here
Upvote 0
I made stocks for a couple of my powder burner a decade or more ago. I make a lot of my own furniture. So for me a stock for my P35s was not a big deal. I have all the necessary tools and a shop in an extra garage. The inletting for the P35 action is not overly complicated. It could be done with a plunge router and a few chisels for cleanup. I good jig saw would cut out the shape you want, I use my Bosch for the inside curve cuts and my bandsaw for the outside. It would take longer with less tools but it could be done without a lot of tools. You would also need a rasp and sanders to shape the stock.
Upvote 0
Today received my snowpeak m25. Got 30 cal what a beautiful rifle. Now waiting for the scope to arrive bought a Vector Optics Veyron 6-24x44 SFP Ir. Also waiting on my bipod. Then do some tests schooting and crono it.
Upvote 0