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eSteve
PostPosted: Fri May 07, 2021 12:55 am 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
killercrow wrote:
You can try a lighter pellet. Half a grain to a full grain lighter would do it I bet.

If your 3 rear guide blocks are different lengths allowing experimentation then by all means I would do that.

yeah, I’ve gone through all the .177 pellets I had, mostly those Grizzly ones, 8.6 gn. Now I’ve got 300 of lighter ones - 6.9 gn, I’m sitting down to match them right now

Yes, since I heard about working the Back Spring Guide, I’ve wanted to cut it up! I’ve gotta order it first, though

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
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eSteve
PostPosted: Fri May 07, 2021 1:02 am 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
killercrow wrote:
modding the cheap crosmans and getting some pretty awesome results. Cheap springers too, qb78s, something would come along and numerous posts on modding and figuring out and fine tuning on said gun would be everywhere.

I just saw a qb78 locally on craigslist, had only read them mentioned here. I liked it, thought about it. Hm

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
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killercrow
PostPosted: Fri May 07, 2021 10:38 am 
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Joined: Thu Oct 13, 2005 4:20 pm
Posts: 2374
Location: Spruce Grove AB
Do you need to spend a bunch of money on parts though?
If it's spacers you're after I could cut some up for you. They should fit in a letter envelope I imagine. Will be making parts this weekend anyway, would be nothing to cut a few spacers. Let me know.

The qb78/crosman 160 is an excellent platform. And it cocks like a Lee enfield. Lots of potential, only problem is the QC isn't the greatest. Maybe they're better now, I don't know.
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eSteve
PostPosted: Fri May 07, 2021 12:38 pm 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
killercrow wrote:
Do you need to spend a bunch of money on parts though?

If it's spacers you're after I could cut some up for you. They should fit in a letter envelope I imagine. Will be making parts this weekend anyway, would be nothing to cut a few spacers. Let me know.

The qb78/crosman 160 is an excellent platform. And it cocks like a Lee enfield. Lots of potential, only problem is the QC isn't the greatest. Maybe they're better now, I don't know.

Yes, I have one more sort of essential order to make, from Crosman. A spring mostly, spacers, maybe chamber oil.

If you could send a couple spacers, that would be awesome! I don't know, is 3/8" a starting point? A 1/4" ? That was my question, how much spacer for 20 fps?

How are you doing for piston liners? I could send you a Liner Kit, in exchange. The ones I've made, they don't show any signs of degrading. They just work, as I imagine they should. They're quick for me to make.

Yeah, don't think I need another rifle.

Cheers

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
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killercrow
PostPosted: Fri May 07, 2021 8:23 pm 
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Joined: Thu Oct 13, 2005 4:20 pm
Posts: 2374
Location: Spruce Grove AB
It'll take some experimenting, I doubt there is a way to tell you how much preload to use. You may get no gains at all. I actually lost velocity by adding preload to my xs28... I still don't understand why. My only guess is that my seal failed at whatever pressure I generated, and just bypassed. If that makes any sense.

But in a sub pal rifle, you should get something. I spaced up a full power maccari spring to coil bind in a phantom 22 and got it to shoot at 700fps. Then was told by someone here that my chronograph was broken.
I don't recall what it was at for a starting point.
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ricksplace
PostPosted: Sat May 08, 2021 5:38 am 
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Joined: Mon May 26, 2014 1:08 am
Posts: 822
Location: Thunder Bay
eSteve wrote:
Yeah, don't think I need another rifle.

Good luck with that!
I said this after my second or third rifle, and each acquisition thereafter.
I've actually been pretty good for the last few years, until I found a B3 under lever in .22 in Canada for $110 shipped.
My other two B3s in .177 told me they were lonely.
I had good intentions...

PS. Take up Killer on his offer of washers. Thick washers (thin enough to mail in a letter envelope) can be stacked on the guide to give the preload you want. Installed at the piston, they add piston weight; at the rear of the guide, they do not. Both locations affect preload the same amount.

_________________
Theory is when you know how something works, but it doesn't.
Practice is when something works, but you don't know why.
In my shop, Theory and Practice are combined!
Nothing works and I don't know why.

Two lathes and too many projects
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eSteve
PostPosted: Sat May 08, 2021 1:25 pm 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
ricksplace wrote:
Thick washers (thin enough to mail in a letter envelope) can be stacked on the guide to give the preload you want. Installed at the piston, they add piston weight; at the rear of the guide, they do not. Both locations affect preload the same amount.


Thanks. Looking forward to trying this. I've found some washers with different holes I may try temporarily.

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
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 Profile  
 
eSteve
PostPosted: Sat May 08, 2021 1:30 pm 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
killercrow wrote:
That's actually a nice setup.


This version of my spring compressor is history. I've modified it


Attachments:
IMG_0323 copy.JPG
IMG_0323 copy.JPG [ 166.26 KiB | Viewed 575 times ]

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
Top
 Profile  
 
eSteve
PostPosted: Sun May 09, 2021 8:07 pm 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
killercrow wrote:
You can try a lighter pellet. Half a grain to a full grain lighter would do it I bet.

Ok. I was shooting 475 fps with the 8.7 gn Grizzly. I’ve just chronied the 7.1 gn RWS Super-H-Point, see photo.

1.6 gn lighter, 35 fps faster. Wow. I’m just learning this, I saw it with the heavy pellet in my .22. Ok.

But yeah killer, I think you were spot on with a half to a grain. Maybe I don’t need a spacer! Cheers


Attachments:
IMG_0369 copy.JPG
IMG_0369 copy.JPG [ 179.21 KiB | Viewed 525 times ]

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
Top
 Profile  
 
YepYep
PostPosted: Sun May 09, 2021 8:43 pm 
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Joined: Wed Jul 26, 2017 7:01 pm
Posts: 5149
Location: GTA, ON
eSteve wrote:
Maybe I don’t need a spacer! Cheers


Yep, I agree~

And the Grizzly is a good value practice pellet (means you won't use it in competition) which is not bad at all, but in the heavy side and not as good as other 'good' pellets. You should give other pellets a try.

Thinking your rifle is actually in a very good shape already and you can enjoy shooting it without open it again but by testing pellets or other ways to tighten the group and have the speed you desire ~

_________________
~Plinkers~
FX-M3-22 Compact#PP700-Carbine#Diana48-177#XS28M-25@26fpe#HW45 Beast#AW-Custom Z-Killer DE
~Competitors~
FWB300SU#Tau-7#IZH-46M#FWB-65#CP88-C
~Target~
HW 30s/35e/97k/40+Extender/P3+Scope/70#CZ200s Laminated@10fpe#AA ProSport-177@12fpe
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Daryl
PostPosted: Sun May 09, 2021 11:22 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
Posts: 11353
Location: P.G. B.C.
Washing the grizzly pellets should help with their accuracy by a good margin.
You could google it, or just wash them in a 4 cup measure, with warm water
and some dish soap - swirl them around, then strain, dry on paper towel or
cloth. Amazing how much "chaf" there is. Chaf in this scenario is bits and pieces
of lead that was inside the hollow base of the pellets. This throws the balance
off which is not good for accuracy.

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Daryl
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YepYep
PostPosted: Mon May 10, 2021 7:39 am 
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Joined: Wed Jul 26, 2017 7:01 pm
Posts: 5149
Location: GTA, ON
I think I will give it a try this time~ ignored the washing and lubing on pellets before as I didn't think it worths but lock down makes me have more time stay in home than before... :(

I got some Grizzly last time when I met a good price in visiting PA, however it works good in my 30 but too heavy for the 495fps HW30s and not accepted by the higher power but picky Pro Sport... So they were put aside for a good while...

_________________
~Plinkers~
FX-M3-22 Compact#PP700-Carbine#Diana48-177#XS28M-25@26fpe#HW45 Beast#AW-Custom Z-Killer DE
~Competitors~
FWB300SU#Tau-7#IZH-46M#FWB-65#CP88-C
~Target~
HW 30s/35e/97k/40+Extender/P3+Scope/70#CZ200s Laminated@10fpe#AA ProSport-177@12fpe
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YepYep
PostPosted: Mon May 10, 2021 10:03 am 
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Joined: Wed Jul 26, 2017 7:01 pm
Posts: 5149
Location: GTA, ON
Well!!

The Grizzly looks really needs a good bath... They are laying on the kitchen towel enjoying the blue sky and drying themselves on my balcony decks in the wind and sun now...

The water just love to stay in the hollow base of the pellet and better to use a compressed air gun (you know what I mean, not your FX PCPs... [emoji38]) to blow dry them, but I don't have that in home and don't think to use Qtip in here is a good idea for hundreds pellets.... :eek:

Below is a picture I must took to show what I found when I only poured the pellets out then found on the 'empty' tin... Image

_________________
~Plinkers~
FX-M3-22 Compact#PP700-Carbine#Diana48-177#XS28M-25@26fpe#HW45 Beast#AW-Custom Z-Killer DE
~Competitors~
FWB300SU#Tau-7#IZH-46M#FWB-65#CP88-C
~Target~
HW 30s/35e/97k/40+Extender/P3+Scope/70#CZ200s Laminated@10fpe#AA ProSport-177@12fpe
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Daryl
PostPosted: Mon May 10, 2021 1:31 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
Posts: 11353
Location: P.G. B.C.
Yeah, there is an amazing amount of "debris" left over.
Tks for the picture.

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Best Wishes
Daryl
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eSteve
PostPosted: Mon May 10, 2021 8:12 pm 
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Joined: Mon Apr 12, 2021 11:04 pm
Posts: 307
Location: Lower Mainland, BC
YepYep wrote:
And the Grizzly is a good value practice pellet (means you won't use it in competition) which is not bad at all, but in the heavy side and not as good as other 'good' pellets. You should give other pellets a try.

I didn’t choose Grizzly, they came with the used Optimus. I don’t know if I’ll have them again. I don’t know where to get them.

Mostly I’m shooting RWS and H+N, some JSB. I’m getting more JSB, for the .177.

_________________
Stephen
low- / mid-level springers

.177 Cometa Fusion, Vantage 3-9x40
.177 Cometa Fenix LT, Endurance 4-16x50
.22 Cometa Fenix, Airmax 3-9x40
Top
 Profile  
 
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