The $100 challenge.....

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Posted: 17 Sep 2023 at 3:04am

I found the small amount that I took off the back rib lifted my barrel even nicely. Pulled it an inch or two at target. But my barrel is strait just facing downward a fraction.
I also put a spacer at back under cylinder where the rear stock bolt goes thru.
I think that biggest issues I'm having with groups is my eyes and open sights (this improved slightly when instead of a circle I drew an arrow head and aimed for where I couldn't quite see the tip.
The rear blade sight. It literally loses the pin that locks it in. Throws the sight out and usually I don't notice till the sight actually tilts when one end drops totally.
Really don't want to be removing any of the scopes or the red dot set up on the other guns and preforming well.

kruzaroad

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Posted: 17 Sep 2023 at 3:10am

How are you guys deciding your barrels are crooked and not in line?
When I get back to hasting I'll take out the piston and shine a light up the barrel and look through the cylinder and see if they line up. Probly run the lazer level through the bore too.

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Posted: 17 Sep 2023 at 4:56am

My barrel appears to be good and straight but it tilts down from the cylinder so there's no point in putting a scope on the dovetail grooves at this stage. I was the same as you Kruza, I couldn't see the target through the iron sights, that's why I set up the red dot. I did think of fitting an aftermarket fixed sight but my eyes aren't great either and the red dot is really easy to use with my glasses on.

However, I think I've found a potential cause of my pellet spread. I looked at the breech this morning and took some measurement on the port position vs the barrel. They don't match by a long way, I'd say less than 50%. That probably explains why I can get reasonable groups at 6m but not enough power to do that at 10m. I'll take some photos and give some measurements later on. I want to straighten the breech anyway so I'll do that first then match the port to the barrel.

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kruzaroad

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Posted: 17 Sep 2023 at 5:07am

I'd be keen on seeing the pics.

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Posted: 17 Sep 2023 at 3:18pm

Well I think I've gone as far as I can with this thing. I was wrong about the offset difference between the port and the barrel. There was a little difference, ut not enough to be an issue I don't believe. However that would have been corrected when I eased the breech with a nice sharp flat file. I set the gun up in the vice with a machinist's level and then took several careful wipes with the file and checked the barrel for level. It only took about 3 attempts and the barrel was aligned with the cylinder. I was still having trouble getting the cocking shoe to engage in the piston slot properly so I used an old chisel to spread it open a bit and then cut it back with a carbide burr and then a sanding ring in the Dremel to narrow it down enough to fit in the cylinder slot.

Got it all back together and mounted the Tasco scope, but I'm still not doing very well at 10m. The gun is nice and tight and straight, but I've tried 12 different pellet types tonight and none is performing much better than the others. It may be the operator, but I can do pretty good groups with the Cometa Fenix. I might try adjusting the trigger as I've noted that it seems to have a bit more travel than earlier on and I'm pulling the shots on quite a few occasions.

Daystate Red Wolf .22
FX Dreamline .22
Diana Outlaw .22
AA S410 .22
HW98 .177
HW30 .177
Diana 340 E-Tec .177
FWB Sport 124 .177
Gamo 900 .22
Baikal IJ-22 .177
Crosman 2240 Custom .22
Brocock GP .22

kruzaroad

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Posted: 17 Sep 2023 at 3:40pm

Yep put a trigger adjustment on it.
I had to let mine off a bit as it started firing on closing. But it's light as still, no play. such a short distance to disengaging sear.
You could try measuring the bore diameter, to determine the best size pellet head to use. Then measure and weigh the pellets.

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Posted: 17 Sep 2023 at 4:40pm

I was meant to work on mine today but life got in the way.

Kruza, just peering down mine with good light from end of barrel was all I needed, the wobbly section in mine was just the area that fits into the breech. Hench I cut this section off and re fitted it

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Posted: 17 Sep 2023 at 5:00pm

I'm assuming you mean wavey ( in my terminology) as wobbly to me indicates a lose fit barrel with movement.
So do you think the pellet was damaging as it passed through the wobble bit,otherwise it would just correct itself through the rest of barrel.
Maybe the press fitting warped it.
Would be interesting to catch a pellet undamaged and see.
If it was loose in the fitting, wouldn't a tack wield from barrel to the block it sits in, have been easier?

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Posted: 18 Sep 2023 at 1:07pm

Wavey, yes that's it lol...

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Posted: 18 Sep 2023 at 1:13pm

Get to play with trigger today bb

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Posted: 19 Sep 2023 at 4:04pm

Nope I did play around with the .25 webbly, still not working but getting very close

Edited by Billbobnz - 19 Sep 2023 at 4:05pm

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Posted: 19 Sep 2023 at 4:16pm

Probly a more useful gun to get shooting.

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Posted: 20 Sep 2023 at 7:42am

Sweet just found a gel insert can experiment with.
This may or may not work but be interesting trying.
Back to Hastings for a bit of tinkering I think.

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Posted: 20 Sep 2023 at 2:27pm

So thought might give you guys a bit of a laugh at my mocking up what I need to do. These will all get done properly at some stage.
To the right the hammer beaten spacer.
Inside the stock a spacer for back. It's a half circle so it spring loaded against the sides, to transfer some of the recoil to the screw to the wall . I need to change material.
The gel I'll be using. I'll be cutting a paper.pattern tomorrow.
I'll sand the ribs down and put a plastic (not sure what is good any sujestions appresiated) along the bottom keeping form. Sand the side out.
Cut and lay the gel, sitting a 1/4 out from the original stock thickness then screw the cylinder to stock.
Hopefully it will squeeze into the gel compessing the 1/4 thicker, creating a nice firm bed that absorbs more vibration and transfers the rest to the ribs evenly. Also adds some weight but not to much.
My barrel and reciever are sweet. Put a bit of cylinder lube down and fired a shot. Barrel seal is leaking. Oil around the seal after shot.
Oh and the trigger adjuster... Will be redone properly. Apart from the gel which I will do right first time it's all prototyping.

Edited by kruzaroad - 20 Sep 2023 at 2:31pm

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