1 Piece Mounts  

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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-15 18:37:39  

I have a BKL 1pc mount that I had to file down so that my Hawke Airmax 30 scope's belly didn't touch anymore. Now I like BKL but do/would other scope's belly touch them also?  Reason I'm asking is because I think I should use a 1pc mount on my RX2 but I'm torn between bkl or sportsmatch. Or should I just go with a 2pc sportsmatch or bkl dovetail mount? Or even a dovetail to weaver adapter with a set of weaver rings?  I just do care for weaver rings for some reason though but if it's more beneficial then so be it. So what's everyone's opinion?


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functor
(@functor)
Joined: 2 years ago
Posts: 41
2018-10-15 19:45:40  

Why don't you get tall one piece mounts? UTG/ Leapers have both medium and tall. In my experience they work just as well as BKL ones as long as you are using the scope stop pin. On Dianas you need the BKL. 

I have never tried adapters + weaver on springers. Seems another intermediate thing that could go wrong. Plus the scope would be needlessly high leading to a poor cheekweld. 


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sonnysan
(@sonnysan)
Joined: 2 years ago
Posts: 149

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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-15 21:18:13  
Posted by: functor

Why don't you get tall one piece mounts? UTG/ Leapers have both medium and tall. In my experience they work just as well as BKL ones as long as you are using the scope stop pin. On Dianas you need the BKL. 

I have never tried adapters + weaver on springers. Seems another intermediate thing that could go wrong. Plus the scope would be needlessly high leading to a poor cheekweld. 

I think/thought y'all or high mounts still have the same distance from bottom of ring to the top of the part under the belly?


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-15 21:21:03  
Posted by: sonnysan

The solution:

http://www.bkltech.com/BKl-30mm-6-Screw-Unitized-Dovetail-Mount-p/bkl-360.htm

 

The only part that makes it high is the part that the screws go in. Not the distance between the bottom of the ring and the long flat part


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functor
(@functor)
Joined: 2 years ago
Posts: 41
2018-10-15 23:03:27  

That's why I recommended the UTG high mounts. The base is the same as the medium height ones, but the rings stand a bit above the base. Search for an image and you'll see. I think those should do the job for you. 

I have used two piece mounts-- rear with pin-- on HW dovetails, but it is a 12 fpe HW77, but it has worked fine and held its zero for roughly a thousand shots so far. So two piece mounts do work on medium recoil springer.  I don't know whether that will work for a more powerful springer. 


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Bobd
 Bobd
(@bobd)
Joined: 11 months ago
Posts: 11
2018-10-15 23:34:21  

Use it the way you moded it . It will be fine. But you could get Bkl 2 piece double strap mounts $18 a piece and it would look great and never move


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marflow
(@marflow)
Joined: 2 years ago
Posts: 607
2018-10-15 23:39:55  

well the BKL list there turret clearance as .125, 1/8 of an inch on all mounts with  rings so changing to any of those won't help

now could other brand scopes cause you the same problem with a BKL mount, the chances are very good they would

now Sportsmatch mount have a variety of turret clearances and you have to choose by looking at the details, I saw turret clearances from 2mm to 7.5mm and the total height varied also and look for the C dimension

so in the Sportsmatch mounts knowing your turret depth would be needed to get the right one

http://www.sportsmatch-uk.com/products

 

Diana came out with there special Bullseye ZR scope mount and it has clearance problem

your dislike for weaver rings in odd to me, you can find for variety in weaver then dovetail and if you were to find an adapter that would hold you would have all your problem solve

I would find a Sportsmatch mount, that was the recommended mount anyway

now these adapters aren't worth a damn as they are made but if you just cut them in half down the middle, now you have a very good adapter, good clamping area, very little height gained and you can use them as dovetail clamps also and they are dirt cheap, just an option for now or later, sure they are China but I get things from Chine off Ebay all the time 2 to 4 weeks wait time but the holidays are coming

 

https://www.ebay.com/itm/1-Pair-Picatinny-11mm-Dovetail-To-7-8-20mm-Weaver-Rail-Adapter-Mount-New/112427144001

 

about all I have

take care and good luck

mike

Mike


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-16 04:41:19  
Posted by: marflow

well the BKL list there turret clearance as .125, 1/8 of an inch on all mounts with  rings so changing to any of those won't help

now could other brand scopes cause you the same problem with a BKL mount, the chances are very good they would

now Sportsmatch mount have a variety of turret clearances and you have to choose by looking at the details, I saw turret clearances from 2mm to 7.5mm and the total height varied also and look for the C dimension

so in the Sportsmatch mounts knowing your turret depth would be needed to get the right one

http://www.sportsmatch-uk.com/products

 

Diana came out with there special Bullseye ZR scope mount and it has clearance problem

your dislike for weaver rings in odd to me, you can find for variety in weaver then dovetail and if you were to find an adapter that would hold you would have all your problem solve

I would find a Sportsmatch mount, that was the recommended mount anyway

now these adapters aren't worth a damn as they are made but if you just cut them in half down the middle, now you have a very good adapter, good clamping area, very little height gained and you can use them as dovetail clamps also and they are dirt cheap, just an option for now or later, sure they are China but I get things from Chine off Ebay all the time 2 to 4 weeks wait time but the holidays are coming

 

https://www.ebay.com/itm/1-Pair-Picatinny-11mm-Dovetail-To-7-8-20mm-Weaver-Rail-Adapter-Mount-New/112427144001

 

about all I have

take care and good luck

mike

My dislike for weaver rails Mike is because I worry  about them shiftinga the scope's off center from the bore which bkl alleviates. But sportsmatch doesn't either but I assume sportsmatch is quality made. All assumptions of course. But thank you for your input


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-16 04:43:40  
Posted by: Bobd

Use it the way you moded it . It will be fine. But you could get Bkl 2 piece double strap mounts $18 a piece and it would look great and never move

I just seen double straps with the triple screw at the bottom of the rings...that may be what I need


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nervoustrigger
(@nervoustrigger)
Joined: 2 years ago
Posts: 184
2018-10-16 09:05:47  

Josh, just a heads up about the centering feature of BKL mounts...it’s really a superfluous thing that is easily overcome with conventional scope mounts when one aligns the reticle with the muzzle in a mirror as described here  https://airgunwarriors.com/airgun-talk/do-you-pay-a-smith-to-install-your-scope-mount-or-you-a-diy-person/#post-10035

And be advised there are a number of potential flaws in the fabrication and assembly of the receiver and the barrel which can render the centering useless so it’s always a good idea to align the scope via some reliable optical method like the one referenced above. The various commercial jigs that involve putting a spirit level on some surface of the rifle are at risk of missing these types of flaws.

The beauty of all this is that it’s possible for the average person to achieve excellent results with $15 mounts and without buying any special tools.


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marflow
(@marflow)
Joined: 2 years ago
Posts: 607
2018-10-16 16:22:50  

Sportsmatch mounts and rings were the recommended mount by Beeman for your rifle, they are not cheap and they made in the UK

Mike


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-16 17:16:33  
Posted by: marflow

Sportsmatch mounts and rings were the recommended mount by Beeman for your rifle, they are not cheap and they made in the UK

Thanks Marflow


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ekmeister
(@ekmeister)
Member of Trade
Joined: 2 years ago
Posts: 437
2018-10-16 19:24:12  

Sometimes you have to just exert a little extra effort to change an old way of doing things, and you come out ahead.  What I'm referring to is that it may be time to reconsider your aversion to the Weaver-dovetail adapter option.  I've done it several times, in a couple of different ways, with good, sturdy results.

Obviously the Weaver/Picatinny rings can't go anywhere on the top of the adapter(s) because of the notches for the screws.  That was the primary consideration in their design, and it works well.  OTOH, it's true that some dovetail adapters can slide on the grooves in a scope rail, but you can fix that another way.  You install a new set screw in the adapter to fit down into one of the holes that is typically provided in the scope rail (or receiver) on the rifle, and thus make your own stop pin.  That's assuming of course that the adapter you bought didn't come with a stop pin of its own already installed.  If you install a stop screw yourself, a 5mm or 10-32 'black' set screw is a good choice.  You just need to drill and tap the hole in the base of the adapter for the new screw.  It's a fairly-easy and fairly-fast modification.

Some adapters even come with adjustable droop compensation so you don't have to try to figure out which fixed drooper adapter to use like you do on some of the UTG versions made to fit RWS/Diana rifles--you know, like "20" of droop compensation at 30 yards", or "30" of droop compensation at 30 yards", etc.  With all 4 screws of the adapter tightened, the amount of droop is pretty sturdily fixed (you can't see the heads of the other 2 screws in the base when you open the link below, but they're there.  You CAN make-out the opposite ends of those screws). 

Now. if that's STILL not enough to make you confidant with the strength and holding power of the entire arrangement, once you've determined how much droop compensation you need and adjust the top of the adapter to that setting, you can add one extra set screw near the rear of the top half of the adapter shown in the link and screw it down until it just touches the top of the rail or receiver, whichever one being what you have.  If you do that, the amount of droop you set is EXTRA-sure to stay exactly where you put it.

Finally, speaking of that, here's a link to the adjustable droop, dovetail-to-Weaver adapter to which I'm referring.  If you use one of these, you're free to use 2 separate Weaver rings to easily get the clearance you need at the bottom of your scope.  Weaver rings come in various heights for choosing the ones that best fit your application and preferences.  I'm really surprised that I don't regularly see anyone refer to this adapter, because it's a really great option for situations like the one you described.

https://www.pyramydair.com/s/a/Hawke_Sport_Optics_1_Pc_Elevation_Adapter_3_8_to_Weaver_Rail/4163

HTH.

 

Safe and Happy Shooting!

Ed, the Airgun TuneMeister

https://www.airguntunemeister.com/


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-17 12:34:52  
Posted by: ekmeister

Sometimes you have to just exert a little extra effort to change an old way of doing things, and you come out ahead.  What I'm referring to is that it may be time to reconsider your aversion to the Weaver-dovetail adapter option.  I've done it several times, in a couple of different ways, with good, sturdy results.

Obviously the Weaver/Picatinny rings can't go anywhere on the top of the adapter(s) because of the notches for the screws.  That was the primary consideration in their design, and it works well.  OTOH, it's true that some dovetail adapters can slide on the grooves in a scope rail, but you can fix that another way.  You install a new set screw in the adapter to fit down into one of the holes that is typically provided in the scope rail (or receiver) on the rifle, and thus make your own stop pin.  That's assuming of course that the adapter you bought didn't come with a stop pin of its own already installed.  If you install a stop screw yourself, a 5mm or 10-32 'black' set screw is a good choice.  You just need to drill and tap the hole in the base of the adapter for the new screw.  It's a fairly-easy and fairly-fast modification.

Some adapters even come with adjustable droop compensation so you don't have to try to figure out which fixed drooper adapter to use like you do on some of the UTG versions made to fit RWS/Diana rifles--you know, like "20" of droop compensation at 30 yards", or "30" of droop compensation at 30 yards", etc.  With all 4 screws of the adapter tightened, the amount of droop is pretty sturdily fixed (you can't see the heads of the other 2 screws in the base when you open the link below, but they're there.  You CAN make-out the opposite ends of those screws). 

Now. if that's STILL not enough to make you confidant with the strength and holding power of the entire arrangement, once you've determined how much droop compensation you need and adjust the top of the adapter to that setting, you can add one extra set screw near the rear of the top half of the adapter shown in the link and screw it down until it just touches the top of the rail or receiver, whichever one being what you have.  If you do that, the amount of droop you set is EXTRA-sure to stay exactly where you put it.

Finally, speaking of that, here's a link to the adjustable droop, dovetail-to-Weaver adapter to which I'm referring.  If you use one of these, you're free to use 2 separate Weaver rings to easily get the clearance you need at the bottom of your scope.  Weaver rings come in various heights for choosing the ones that best fit your application and preferences.  I'm really surprised that I don't regularly see anyone refer to this adapter, because it's a really great option for situations like the one you described.

https://www.pyramydair.com/s/a/Hawke_Sport_Optics_1_Pc_Elevation_Adapter_3_8_to_Weaver_Rail/4163

HTH.

 

I want to say thank you and that was really some great information that you provide to me


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Prairie Farmer
(@prairie-farmer)
Joined: 2 years ago
Posts: 158
2018-10-17 19:11:40  

As mentioned many times in the past, I prefer one piece mounts.  And once I went to these early on, my issues with ring slippage stopped.  With proper prep of course (the 7 P's, see end of post).  The scope tube becomes a cantilever between split 2 piece mounts and can take a beating on heavy hitters.  And I like to stay away from the erector sets on springers.  I don't have any 30mm tubes right now but can show some examples of clearance here with the 25mm's.  These are all BKL 260 or Sportsmatch mediums.

Bkl 260 droop

View post on imgur.com

Bkl 260

View post on imgur.com

View post on imgur.com

Bkl 260

View post on imgur.com

View post on imgur.com

Sportsmatch

View post on imgur.com

View post on imgur.com

Sportsmatch

View post on imgur.com

View post on imgur.com

🎯

Jason G

7 P's

Prior and

Proper

Preperation

Prevents

Piss

Poor

Performance 

Everybody gotta die sometime Red.


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josh3rd
(@josh3rd)
Joined: 2 years ago
Posts: 94
2018-10-17 19:21:14  

Jason G do you have a preference to brand?


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Prairie Farmer
(@prairie-farmer)
Joined: 2 years ago
Posts: 158
2018-10-17 19:46:18  

Not necessarily, the BKL have sharper cuts for the dovetails, but are softer aluminum.  You don't want to stress especially when spreading.  Only enough to slide them on.

Sportsmatch I do like the double screws, and they are longer, and have an arrest pin if so inclined.  These are casted out of harder materials.

As seen, the Sportsmatch will provide more turret box clearance on the mediums.

Not checked the exchange lately, but I have ordered my Sportsmatch from here in the past and save some money.

https://www.tawnadoairguns.com/scope_mounts.php

Op25 mediums, double screw around $44.70 shipped to US.

Large store stateside, not mentioning name, same mount Op25, 1" tubes, shipped $74.60.  And that is with the cheapest shipping option and not to include any tax depending on state.

Jason G

Everybody gotta die sometime Red.


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