Geometric puzzlement

[Baldie]

I emailed BKL about shipping to UK. Their response was no because they have an exclusive UK distribution deal with Daystate. Now looking at Daystate's site they do seem to have a fearsome markup on these BKL products. E.g. "302 BKL Scope Mounts - two piece double strap reach forward 30mm - matt black". BKL web price $70, Daystate price £83. Ouch.

I've mentioned this before. Even if Daystate were buying them retail, the margin's not bad. Apart from the problem I had with the B Square 30mm's, I've never seen a faulty set of rings so I doubt there are many returns.



I have the Sportsmatch User Destructions here in front of me for their adjustables. The image quality of the piccies is not so great I can replicate it for everyone to see, so I may get myself a set to do my own piccies.

I will also need to check how far the mounts need to be apart, to get the 'magic' 7 degrees .......

...

[Barry]

I also e mailed BKL and subsequently DayState. 51 quid for the Unitized 6 Screw 3/8" Dovetail 4" Riser then another 36 quid for single strap mounts 300s I think or 70 quid for 301 double strap.

With recoil less pcp I should think single strap would do the job. So around 86quid and job done.

BUT, as someone said, the .007" would only put one 'in the ball park' the scope would be half inch higher than it currently is at 1.75" sight line to bore centre, so the angle would change (according to chairgun) to .010"

Suddenly £86 seems like a lot of money to only get close

I still stand by my desire to be able to optically centre my scope and zero at 35 yards using the mounts in some way, but common practice dictates I should stick with shimming.......all of a sudden I feel a little 'retentive'

Incidentally, when I did centre the scope, I mounted it in the existing mounts and fired a few shots in the indoor range at petes airgun farm, the windage was bang on

Heres an idea!!! 50 quid for the one piece BKL jobbie coupled with SportsMatch adjustables for the fine zeroing. Bang on zero possible for just over a hundred quid.

[Baldie]

Heres an idea!!! 50 quid for the one piece BKL jobbie coupled with SportsMatch adjustables for the fine zeroing. Bang on zero possible for just over a hundred quid.

Do you need the BKL bit?

If you can wait a week, I can lend you my Sportsmatch adjustables?

...

[Barry]

Hi Baldie.
Sorry I havent got back to you, internet troubles and all that, using someone elses for now.

Thats jolly decent of you mate Ill take you up on a try of those if you dont mind. I've pm'd you my phone number and home address.

Many thanks.
Barry

[Baldie]

Hi Baldie.
Sorry I havent got back to you, internet troubles and all that, using someone elses for now.

Thats jolly decent of you mate Ill take you up on a try of those if you dont mind. I've pm'd you my phone number and home address.

Many thanks.
Barry

You sent me a mobile number and a home phone number (that doesn't look right). I have texted your mobile.

I await your reply.

[Barry]

Right, so I got that little extra time and spent today with a small file.....

The Viper now sits very handsomely in its new B Square mounts atop the HW100.

A couple of my own tips for anyone else contemplating these things.
1. Once you have filed the holes to allow clearance for the cap screws to bite cleanly into the bottom of the mount, fit the mounts to the scope first, not the rifle. Its a fiddly job and being able to hold the scope made it easier.

2. Keep everything loosened and slide the scope, on the mounts, carefully onto the dove tail. Any doubts about loosness or security of fit will vanish as you begin tightening.

3. Tighten the mounts onto the dovetail/rail first, then tighten the caps, that will set the mount tubes at your pre selected angle and lastly, nip the windage grub screws, this clamps what I earlier thought was a thread tolerance problem.

A couple of issues with these mounts.

1. Filing the cap holes will set the screws 'off centre' so they wont sit correctly in the countersink and if your analy perfectionist like me, you wont like how this looks.

2. Zeroing the scope using the mounts MUST now entail removal of the scope along with mounts from the dovetail/rail for each adjustment. lengthy, but by the look of things it will be worth the effort and should be a one off.

Ill let you know how they zero when I get done at Petes farm on tuesday if you like.

Chairgun is suggesting an optimum zero of 40 yards for the height of the LOS above the bore centre so Im going to give it a go

Cheers
Barry

[Baldie]

2. Zeroing the scope using the mounts MUST now entail removal of the scope along with mounts from the dovetail/rail for each adjustment. lengthy, but by the look of things it will be worth the effort and should be a one off.

Cheers
Barry

Any chance of some photo's?


Just got the Sportsmatch adjustables. Will do piccy tomorrow.