Restocked SWFA 3-9x42 Gen 1

[ChrisAU]

The 5-20 was available with illumination I think.

 

[mcr-85]

No

@mcr-85 sent me a 6x and some 3d printed shims. Id bet it wouldn't be hard for someone with a printer to figure out the id/of needed then learn what thickness equals a mil. I didn't fiddle with what he sent, but it looked like he'd already figured that out for the 6x

If someone can get me some measurements I'd be happy to make some for the 3-9. I don't have one of those.

Edited to add a photo of the shim kit I drew and printed for the SS 6x / 3-15x scopes. There are enough shims to get you 6.5 revolutions in and get it to within 1/4 revolution of zero.

 

[pods8 (Rugged Stitching)]

Refer back to this thread for dimensions to get you in the ballpark for shims for the 3-9

Post in thread 'Swfa zero stop shims ?'

Sep 23, 2024

Anybody up for designing some for the 3x9?

I modeled one real quick based off my 3-9, you got a printer or does anyone else that wants to validate some dimensions? I can email the STL file I tossed together quick.

Or for anyone that wants to play around with the concept themselves its just a cylinder. I did a 22.5mm OD x 12.5mm ID cylinder. On my scope it appears there is about 7.4mm of deadspace in the cap compared to where my turret bottoms out naturally. Each revolution appeared to be about .67mm. Thus if you needed it to stop at 1revolution above your bottomed out point the...

• pods8 (Rugged Stitching)

 

[yycyak]

Not sure if this will work with a 3x9, but in case you're considering the washer route:

Thread 'SWFA Zero Stops'

Dec 5, 2023

In hopes of helping out the collective Hive Mind:

If you are annoyed that your SWFA 6x doesn't have a zero stop, try "M18" crush washers.

I specifically used M18 washers that were 18mm (id) x 24mm (od) x 2mm thick. Three of these stacked inside the elevation turret made an almost-perfect zero stop (would advance about 3-4 clicks at most past zero.)

26mm wide fit the best, but they are tougher to find.

Costs like $6 for 10. Work waaaaay better than the hose washers I was using before.

Happy MacGyvering.

• yycyak
• Replies: 0
• Forum: DIY Gear Modifications

• 

with these I was able to make the zero .1mil below my 100m zero.

So I emailed Tim about the unadvertised set of shims for the 3-9 SWFA on Feb 28, never heard back. Is this the correct email for him?

[email protected]

I'm probably just going to go to the hardware store at this point with a turret in hand and get some nylon washers.

 

[Johnwell]

The 5-20 was available with illumination I think.

Correct, I have one. People complained about the illumination for a lot of reasons.

Just the very center illuminates and is barely daytime visible on the highest settings. The lowest two or three settings or so are not visible to me at all.

The higher settings bleed a bit in low light. Not the best execution I’ve seen, but if the goal is to help the reticle stand out in low light settings 4-7 are pretty good. I probably won’t ever use the illumination though.

 

[sndmn11]

If someone can get me some measurements I'd be happy to make some for the 3-9. I don't have one of those.

Edited to add a photo of the shim kit I drew and printed for the SS 6x / 3-15x scopes. There are enough shims to get you 6.5 revolutions in and get it to within 1/4 revolution of zero.
View attachment 866319

What you send me for the 6x has the correct inner diameter. The outer diameter should be 22.75-22.80mm

 

[FSB12B]

Yeah I came here to say this. Was looking to grab a 10x for a 22 and there is no discount code box anymore

Same. Sucks but with how popular these are I don't blame them. Just ordered a 3-9 for $612.09 shipped.

If someone can get me some measurements I'd be happy to make some for the 3-9. I don't have one of those.

Edited to add a photo of the shim kit I drew and printed for the SS 6x / 3-15x scopes. There are enough shims to get you 6.5 revolutions in and get it to within 1/4 revolution of zero.
View attachment 866319

Any updates on these?

 

[pods8 (Rugged Stitching)]

Any updates on these?

I posted the info above and also remeasured in the below table off my single sample (not sure variation among other scopes). Someone is free to use it or if needed I can print something up, it would just be a question of what resolution is desired.

Deleted this info, see below instead.

 

[pods8 (Rugged Stitching)]

I thought of a better idea. If some folks can confirm the total travel of their scopes to check for variation I think something like this would be feasible to get in the ballpark. How many mills and how much vertical movement, mine is ~3.14mm for 25.2mils but I'm gonna remeasure it more closely.

Have a base shim that is -10mils from zero, then 10-20mil shims can be used/stacked as needed to go in 1mil increments from zero to 25mils, to cover the scope's travel. Should be more straight forward to figure out what shim is needed

 

[Alpha Echo]

Apologies in advance for what may be a stupid question, but what's the best way to measure the total turret travel on my 3x9? I assume using the top / inside measurement jaws on calipers, taking the difference between the turret all the way down and all the way up? Or is there a more elegant way I'm not thinking of?

 

[pods8 (Rugged Stitching)]

Apologies in advance for what may be a stupid question, but what's the best way to measure the total turret travel on my 3x9? I assume using the top / inside measurement jaws on calipers, taking the difference between the turret all the way down and all the way up? Or is there a more elegant way I'm not thinking of?

On mine I bottomed the turret out, took off the cap and measured the distance between the rim and the brass plate of the erector assemble below. Then I put the turret on (without the screw) at zero and cranked it all the way out and got 25.2mils of movement. I them again measured down to the brass plate and got ~3.14mm difference.

I printed out a test set of shims, and the couple I tried the thickness seems dialed in, on my scope at least. I do want to put some clearance back in on the ID and OD though, they fit really snug which doesn't facilitate changing as easily.

The tabs are nice for keeping it all together but annoying to trim (at least with the current snug dimensions) and I feel like loose pieces would be nicer.

 

[pods8 (Rugged Stitching)]

Ditched the tabs and added a -10.5mil base to the mix ti dial in within .5mil for the stop. On my scope these land .1mil behind zero.

 

[Alpha Echo]

Measuring the difference in the brass plate on my 3-9 x 42 this way, I get 3.2 mm of travel. But i am measuring 27.5 mils of travel on the turret. If you make a set of shims for the 3x9 I'd be interested.

 

[Alpha Echo]

Measuring the difference in the brass plate on my 3-9 x 42 this way, I get 3.2 mm of travel. But i am measuring 27.5 mils of travel on the turret. If you make a set of shims for the 3x9 I'd be interested.

Or rather if you start selling these kits, I'm interested

 

[pods8 (Rugged Stitching)]

Or rather if you start selling these kits, I'm interested

I can print these for folks if desired, need to stop at think about a cost basis though, is there concern about potential variation versus my scope or not really worried since the measurements have relative reference points and will get ya in the ballpark? IE if you put in a -10mil base and 22mils of shims and it dials 2mils past zero then add in 24mils of shims instead. Even if that was 23mils from zero on your scope but it was 24mils on mine. Once you're in the ballpark you're just making minor adjustments. Not sure how much to over think it, haha.

 

[KyleR1985]

In for a set of these too. Really cool man!

 

[left hunter]

I’m definitely in for a couple sets!

 

[Deadspace]

Ill take a set as well!

 

[mahonsr]

Same here I’d probably do a set

 

[Valumpessa]

Interested too.