Search found 282 matches
- Fri Jul 07, 2023 6:10 am
- Forum: Olympic Rifle - Air and Smallbore
- Topic: Gehmann Diopter
- Replies: 6
- Views: 8433
Re: Gehmann Diopter
Waste of money. It is hugely complicated to dial everything in. A lot easier is to take your distance vision lens (Sphere, Cylinder, Axis values), add +0.5 to the sphere value, and get that one lens made. You can mount that lens in eyeglasses, a monacle system, in the rear sight, in shooting frames ...
- Tue May 09, 2023 2:55 pm
- Forum: Olympic Pistol
- Topic: Shootingsight.com still functional?
- Replies: 4
- Views: 2526
Re: Shootingsight.com still functional?
We're back up. After Amazon pulled Parler, I decided I didn't want to risk hosting on a left leaning anti-gun cloud service, in case they went totally anti-gun and pulled support. I share the building with an IT guy, so we run our own server. Downside is that we don't have all the redundant backups ...
- Thu Apr 20, 2023 8:00 pm
- Forum: Biathlon Discussion
- Topic: Anschutz laser power Ii rifle
- Replies: 5
- Views: 26138
Re: Anschutz laser power Ii rifle
Aguila makes their Colibri round - no powder, just primer. Little 17gr bullet moves at 350 fps, so you can use a pellet trap. I used to go running, then shoot from my kitchen to the back wall of my living room. Not much louder than a hand clap.
- Mon Apr 03, 2023 9:09 am
- Forum: Olympic Pistol
- Topic: Aging and Score Decline
- Replies: 54
- Views: 61195
Re: Aging and Score Decline
Positive diopter lenses will move your focal point closer to you, negative lenses will move your focal point away from you. The concept is not as obvious, in terms of visualizing the inverse of diopters, but it works. Eyeglasses work because lens diopters add if you stack lenses. If I stack a +2 dio...
- Fri Mar 10, 2023 10:08 pm
- Forum: SASP air pistol and sport pistol discussions
- Topic: special spectacles for airpistol shooters
- Replies: 16
- Views: 41191
Re: special spectacles for airpistol shooters
This subject has been discussed at length, and I have the math to solve the problem, though it is somewhat at odds with old shooters. 1. You want a lens to correct sphere and astigmatism. This is your 'distance' lens that will focus you at infinity (on the target). 2. You can add to the sphere value...
- Fri Mar 10, 2023 9:47 pm
- Forum: Olympic Rifle - Air and Smallbore
- Topic: Anschutz 2002 Super: eyepiece cannot be unscrewed
- Replies: 2
- Views: 1966
Re: Anschutz 2002 Super: eyepiece cannot be unscrewed
Yeah, it's called a spanner wrench. The washer with the notches is a nut. You need the spanner wrench to loosen it.
https://cdn.mscdirect.com/global/images ... 766-21.jpg
https://cdn.mscdirect.com/global/images ... 766-21.jpg
- Sun Feb 19, 2023 1:37 pm
- Forum: Olympic Rifle - Air and Smallbore
- Topic: Monoframe Lens Holders
- Replies: 1
- Views: 2228
Re: Monoframe Lens Holders
I fit a Champion 25mm lens into the Anschutz and the MEC monacles. Both fit, as the monacle frames are just slightly smaller than the Champion, so there was a slight gap. The Anschutz was a better fit - less gap, and enough extra screw length to work as-is, but I like the MEC system better - with a ...
- Mon Jan 30, 2023 10:48 am
- Forum: Olympic Pistol
- Topic: Aging and Score Decline
- Replies: 54
- Views: 61195
Re: Aging and Score Decline
The issue might be semantics to the average shooter, but it isn’t to an eye doctor or lens maker, so I think the distinction is important. My frustration is the huge numbers of older shooters I know who went to the eye doctor and asked to be able to focus ON the front sight. The resulting lens they ...
- Sat Jan 28, 2023 9:52 pm
- Forum: Olympic Pistol
- Topic: Whither Champion's Choice?
- Replies: 14
- Views: 4197
Re: Whither Champion's Choice?
No soup for you!
- Sat Jan 28, 2023 9:21 am
- Forum: Olympic Pistol
- Topic: Aging and Score Decline
- Replies: 54
- Views: 61195
Re: Aging and Score Decline
There are several parts of you body that decline with age, eyes being one. My personal opinion is that while a lot of eye problems can be corrected using the right lens, the optical understanding to get the right lens is still beyond many shooters, and the field is cluttered with mis-understood advi...
- Mon Nov 07, 2022 7:58 am
- Forum: Olympic Pistol
- Topic: Repairing Hammerli 480K Air Pistols?
- Replies: 16
- Views: 3894
Re: Repairing Hammerli 480K Air Pistols?
Plastic parts can take a set because of long term storage, but steel springs do not lose strength by being stored under load or in a compressed state, unless you heat them to above about 450F. Springs degrade due to cycling.
- Sun Nov 06, 2022 11:50 am
- Forum: Olympic Pistol
- Topic: Repairing Hammerli 480K Air Pistols?
- Replies: 16
- Views: 3894
Re: Repairing Hammerli 480K Air Pistols?
I used to take apart and rebuild my SCUBA regulators, and never died following reassembly. There is very little movement of parts inside a regulator, so I would not expect wear failures for any of the components, if they have an issue it would be corrosion or crud buildup. Most often, o-rings and se...
- Fri Nov 04, 2022 8:42 pm
- Forum: Olympic Pistol
- Topic: Repairing Hammerli 480K Air Pistols?
- Replies: 16
- Views: 3894
Re: Repairing Hammerli 480K Air Pistols?
If you decide to sacrifice one, send it to me after you are done. I specialize in taking things apart, and occasionally get them back together with few parts left over (apart maybe from ones I judge probably weren't necessary in the first place). Plus, I have a machine shop if we need to make tools....
- Sun Feb 09, 2020 12:02 pm
- Forum: Olympic Rifle - Air and Smallbore
- Topic: Rear Iris with opening less thn 0.5 mm
- Replies: 11
- Views: 5528
Re: Rear Iris with opening less thn 0.5 mm
An aperture that is fixed is easy enough to make, especially if you start with an existing aperture - solder in a piece of thin shim stock, then put it on a lathe and drill it. Drills that small are easy to find. I would not use a filter. If you have extra light, you may as well use a smaller apertu...
- Thu Dec 19, 2019 10:00 am
- Forum: Olympic Pistol
- Topic: Shooting with contacts
- Replies: 6
- Views: 1673
Re: Shooting with contacts
Also consider having your prescription tweeked for shooting. Most people prefer a +0.75 Diopter power added to their shooting eye. This brings your eye's relaxed focal point a little closer, so it is at the hyperfocal distance of the rear sight, and will balance the focus in your sight picture just ...
- Tue Dec 03, 2019 11:03 am
- Forum: Olympic Pistol
- Topic: Unable to focus on sights
- Replies: 17
- Views: 4575
Re: Unable to focus on sights
I actually sell reduced trial lens sets for shooters, but have discouraged people from buying them these past few years, since I figured out the optical math and how it applies to shooting. Let me start with a simplified definition of diopters and how they apply to your eye: If your eye is focused a...
- Mon Nov 18, 2019 4:53 am
- Forum: Olympic Pistol
- Topic: Shoulder Replacement
- Replies: 6
- Views: 1631
Re: Shoulder Replacement
I had shoulder surgery for a torn rotator cuff, not replacement. Worst thing was the constipation. I sh*t you not (no pun intended). After they slice into your body, the small sticker on the pain meds that says 'may cause constipation' is way easy to overlook, but that was more unpleasant than the p...
- Thu Sep 26, 2019 12:51 am
- Forum: Olympic Pistol
- Topic: can pardini 250 bar be filled by car inflator
- Replies: 14
- Views: 3715
Re: can pardini 250 bar be filled by car inflator
Simple answer:
No, tire shop compressors max at 150 PSI. Air cylinder in gun is 2,000 - 3,000 PSI.
No, tire shop compressors max at 150 PSI. Air cylinder in gun is 2,000 - 3,000 PSI.
- Sun Sep 15, 2019 11:08 pm
- Forum: Olympic Pistol
- Topic: Expired/Defective Cylinder Disposal (US)
- Replies: 30
- Views: 7992
Re: Expired/Defective Cylinder Disposal (US)
What am I missing? Why can't you take them to a hydro testing facility and have them re-tested and re-stamped? New hydro testing is good for 5 years.
- Sun Sep 08, 2019 7:40 am
- Forum: Olympic Pistol
- Topic: Eyewear confusion
- Replies: 50
- Views: 18187
Re: Eyewear confusion
Lenses do not come with a 0 axis mark from the factory, if for no other reason than that '0' for someone measuring using a '+ cylinder' instrument will be 90 degrees offset for someone using a '- cylinder' instrument. Further, lenses are made in a big diameter, about 3" across, and cut down to ...