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Air Gun Scuba Cylinders


The Scuba Doctor has 232 and 300 bar Faber steel scuba cylinders for charging your airgun, air rifle, pre-charged pneumatic (PCP) air rifle and paintball cylinders/tanks/bottles at the best prices available. We recommend you use a 300 bar steel cylinder as you'll get a lot more fills (it could be something like 3 times more). But check that your local dive shop can do scuba cylinder air fills to 300 bar as some only have compressors rated to 232 bar.

Using a 232 bar scuba cylinder to recharge a PCP air rifle to a target pressure of 180 bar should give you a reasonable number of fills. But if your air gun is being recharged to 220 bar, then a 232 bar scuba tank will give you very few fills. If a 300 bar scuba cylinder is used as the recharge air source then you will get plenty of fills in both cases.

300 bar Steel Cylinders

Midland Diving Equipment DIN Gun Charging AdapterWe have available 300 bar (4,350 psi) Faber steel scuba cylinders with 300 bar DIN valves in 3 litre, 5 litre, 7 litre and 12 litre capacity for charging air rifles. Most people use the 12 litre capacity 300 bar scuba cylinder. The 3, 5 and 7 litre cylinders are typically only used as a more portable solution where mobility counts. It's extremely rare to find 300 bar cylinders for sale second-hand.

The 300 bar scuba cylinders are usually connected to your air rifle using an adapter with a 300 bar male DIN fitting at one end and the fitting required for your air rifle cylinder at the other end. We do not supply these DIN 300 bar adapters. (We suggest you try Hermanns Sporting Guns.) These adapters can be used with scuba cylinders using a 300 bar DIN, 200 bar DIN, or DIN/K valve.

How many fills will you get from a 300 bar cylinder? Well, there are so many variables that we're not prepared to say. Other owners of the setup you're using should be able to answer this much better than we could.

232 bar Steel Cylinders

Midland Diving Equipment A-clamp Gun Charging AdapterWe have available 232 bar (3,365 psi) Faber steel tanks with DIN/K valves (232 bar DIN connection with the insert removed, and Yoke connection with the insert in place) in 3 litre, 5 litre, 7 litre, 9 litre, 10.5 litre, 12.2 litre, 15 litre and 18 litre capacity for charging air guns. If you're buying a 232 bar cylinder, we suggest the 12.2 litre capacity cylinder.

The 232 bar scuba cylinders are usually connected to your air gun/rifle cylinder using a Scuba Filling Yoke/A-Clamp/K-Valve Adapter for PCP Rifles with either a 1/8" BSPP thread or a Female Foster Connection. We do not supply these adapters. (We suggest you try Hermanns Sporting Guns.) These adapters can't be used safely with 300 bar scuba cylinders.

Tech Tips

Refilling the scuba cylinder is best done at a dive shop where the compressed air provided should be completely free of moisture and other contaminants. The compressed air that you pump your car tyres up with is not clean or dry enough for a PCP air rifle, and the pressure wouldn't be high enough anyway, e.g. 150 psi (10 bar) when you need 3,000+ psi (200+ bar).

When charging the rifle, open the scuba cylinder valve very slowly. This will allow the air to pass along the filling hose, open the inlet valve and fill the reservoir. Only partially opening the cylinder valve will let you control the air flow. A slow fill is a good fill. Opening and closing the scuba cylinder valve quickly will give a false reading of how much air is in the gun, it can also damage the rifle.

WARNING: Never use anything other than divers' quality compressed air to recharge your PCP air rifle/gun. Using gasses other than clean, dry, breathing quality compressed air can be highly dangerous and will usually invalidate air rifle warranties.

Air rifles must never be filled to more than the manufacturers stated pressure, which is likely to be much lower than the pressure in the scuba cylinder. By exceeding the recommended pressure two things will happen. The first is that the power of the gun will drop significantly. It's a myth that the higher the pressure in the gun, the more power it produces. In fact, you normally find that maximum power is produced about 10 bar below the maximum recommended pressure on non regulated rifles, and a 20 bar overfill can reduce the power by 40%.

In order for scuba tanks to be refilled in an Australian dive shop they are required to be tested every year if they are used for diving. As a dive shop has no way to tell that you're using the cylinder exclusively out of the water, they will require the scuba cylinder to be in test before filling it.

We suggest you avoid aluminium scuba cylinders as most are only rated to 207 bar. Do not buy second-hand old aluminium cylinders (made of 6351 aluminium alloy, or pre 1995) as some have been known to explode and kill people. Plus you probably won't be able to get these old aluminium tanks tested, or filled at a dive shop.

A full scuba cylinder contains an enormous amount of energy. They are quite robust, however, you should treat them with great care.

We recommend you put a For Paintball Use Only cylinder sticker on scuba cylinders used to fill air gun and paintball cylinders.



Sierra Nevada

Wreck Dive Wreck Dive | Shore access Shore access

Ideal For Snorkelling Open Water Rated Outside Port Phillip Wreck Dive Site

Three-Masted Iron Ship | Max Depth: 7 m (23 ft)

Sierra Nevada
Sierra Nevada
Source: State Library Victoria

Level: Open Water and beyond.

The Sierra Nevada shipwreck lies east of The Rip to the west of London Bridge and Timms Tunnel about 300 m (984 ft) from shore of the back beaches on Mornington Peninsula, Victoria.

The area is very wild and is rarely dived as it needs exceptionally calm conditions.

Diving and Snorkelling the Sierra Nevada Shipwreck

The remains of the Sierra Nevada shipwreck lie approx 300 metres from shore in 3 to 6 metres of water on a mobile sand bottom. The remains are distributed along a 0 to 180 degree axis north-south with visible remains extending 58 metres. The vessel is heavily broken up with large sections of iron plate and framing scattered over an area of 1740 sq m (i.e. 58 m by 30 m).

At the stern (southern end of the site) iron and cargo items have been cemented by iron corrosion products/seabed detritus/sand. In some places, this cement capping has broken through divers illegally using cold chisels and crowbars to reveal well-preserved ceramics and bottles. Other visible items include workshop machinery, i.e. a lathe bed, etc. as well as a large amount of flat iron bar which may have been ballast or cargo.

The Sierra Nevada is easily accessible, though not often diveable. It's known to contain large amounts of goodies which have been targeted in the past by illegal looters. A number of ceramics were raised by authorities to ensure the survival of some material. These ceramics are consistent with a wreck circa 1900. Size of wreckage scatter/dimensions of structural members consistent with an iron vessel 1500 tons and 200 to 250 feet in length.

See WillyWeather (Portsea Surf Beach) as a guide for the tide times and the height of the tide.

Back Beach Warning: Always keep an eye on sea conditions throughout any dive on the Back Beaches of the Mornington Peninsula. Please read the warnings on the web page diving-the-back-beaches before diving or snorkelling this site.

Bass Strait Warning: Always keep an eye on sea conditions throughout any shore or boat dive in Bass Strait on Victoria's coastline. Please read the warnings on the web page diving-in-bass-strait before diving or snorkelling this site.

Sierra Nevada Shipwreck History — Built in 1877

The Sierra Nevada was a three-masted two-deck iron ship, built in 1877, by Oswald, Mordaunt and Co, at their Southampton, England shipyard. The Sierra Nevada was owned by the Sierra Shipping Company managed by Thompson, Anderson and Co. of Liverpool. The British registered vessel is described in the Lloyds Shipping Register as being 233 ft (71 m) long, 37.6 ft (11 m) in breadth, and 23.5 ft (7.16 m) in depth. The vessel was a 1,470 ton (net), 1,523 ton (gross). The hull was of iron with a single cemented bulkhead. The Sierra Nevada had a 100A1 classification with Lloyds of London (1).

The Sierra fleet consisted of fourteen vessels all of steel or iron construction and all fully-rigged three-masted ships apart from one barque. Features common to all vessels of the Sierra line were the French grey hulls, white spars and short naval mastheads. The ships were mostly built for the Rangoon rice trade and were, therefore, more carriers than fliers.

The Sierra Nevada is historically significant and representative of a small group of large iron-hulled international cargo sailing vessels wrecked on Victoria's west coast. The Sierra Nevada has some social significance as the events surrounding the wreck and its aftermath represented extreme ends of the local community's social values. As part of the group of iron-hulled trading vessels wrecked on the west coast, Sierra Nevada's cargo helps makes up part of the picture of the particular tastes of Victorian society and economy in the late 19th century. The Sierra Nevada has broken up and is scattered over a large area at the Portsea Back Beach, Point Nepean, Port Phillip Heads.

There is potential for archaeological significance through typology studies of cargo materials providing reference information for other areas of historical archaeological research. Scientifically, Sierra Nevada can contribute to corrosion studies as an iron-hulled vessel carrying iron cargo.

Sierra Nevada Sinking — Wrecked 9 May 1900

The Sierra Nevada left Liverpool, England on 16 January 1900 under the command of Captain John Scott of Manchester, and a crew of 27 bound for Melbourne, Australia with a particularly large and valuable cargo comprising in all 2,600 tons of general merchandise. On 8 May 1900, after a routine voyage of 112 days at sea, the vessel arrived outside Port Phillip Heads in very rough weather. While waiting outside the heads blue lights were burned as a signal for the pilot schooner.

A strong southerly was blowing and shortly after midnight, the ship was driven inshore onto the reef on 9 May 1990, in the vicinity of London Bridge. On striking the reef the captain gave the order to let go the anchor but it failed to hold and the ship drifted broadside on. Up until the impact no distress rockets had been fired as the captain was unaware that the vessel was in danger.

It appears that in the squally conditions the Sierra Nevada had unwittingly overshot the pilot ground despite the pilot schooner burning white flares regularly. Subsequent investigations revealed that the pilot was unaware of the arrival of the Sierra Nevada. On this particular morning, the pilot station was some five miles out from the heads which was some distance further out than usual due to the heavy weather.

The Sierra Nevada rapidly went to pieces in the pounding surf with the loss of 23 of the 28 crew. A memorial gravestone is located in the Sorrento cemetery marking the spot where Captain Scott and ten crewmen are buried and is dedicated to the 23 crew lost.

At daybreak the beach west of London Bridge was seven feet deep in the wreckage. Locals rushed to the scene some to render assistance, others to help themselves to numerous casks of whisky that had been washed ashore. Pilfering became so rife in fact that a detachment of Permanent Artillery were stationed about the beach the following morning. On the 5 June 1900, the remains of the Sierra Nevada were sold for 53 pounds.

See also, Heritage Council Victoria: Sierra Nevada,
Australian National Shipwreck Database: Sierra Nevada,
MAAV: Sierra Nevada 1877-1900, and
Wreck Of Sierra Nevada in "Shore Dives of Victoria" by Ian Lewis, 3rd edition page 112.

Heritage Warning: Any shipwreck or shipwreck relic that is 75 years or older is protected by legislation. Other items of maritime heritage 75 years or older are also protected by legislation. Activities such as digging for bottles, coins or other artefacts that involve the disturbance of archaeological sites may be in breach of the legislation, and penalties may apply. The legislation requires the mandatory reporting to Heritage Victoria as soon as practicable of any archaeological site that is identified. See Maritime heritage. Anyone with information about looting or stolen artefacts should call Heritage Victoria on (03) 7022 6390, or send an email to heritage.victoria@delwp.vic.gov.au.

Boon Wurrung / Bunurong country
Boon Wurrung / Bunurong country

Traditional Owners — This dive site is in the traditional Country of the Boon Wurrung / Bunurong people of the Kulin Nation. This truly ancient Country includes parts of Port Phillip, from the Werribee River in the north-west, down to Wilson's Promontory in the south-east, including the Mornington Peninsula, French Island and Phillip Island, plus Western Port. We wish to acknowledge the Boon Wurrung as Traditional Owners. We pay respect to their Ancestors and their Elders, past, present and emerging. We acknowledge Bunjil the Creator Spirit of this beautiful land, who travels as an eagle, and Waarn, who protects the waterways and travels as a crow, and thank them for continuing to watch over this Country today and beyond.

 

Sierra Nevada Location Map

Latitude: 38° 19.790′ S   (38.329833° S / 38° 19′ 47.4″ S)
Longitude: 144° 41.250′ E   (144.6875° E / 144° 41′ 15″ E)

Datum: WGS84 | Google Map | Get directions
Added: 2012-07-22 09:00:00 GMT, Last updated: 2022-04-30 04:29:45 GMT
Source: Book - Shipwrecks Around Port Phillip Heads GPS (verified)
Nearest Neighbour: Norwester, 278 m, bearing 106°, ESE
Iron hulled, two deck, three-masted ship, 1523 ton.
Built: Southampton, England, 1877.
Sunk: 9 May 1900.
Portsea, Back Beaches, Mornington Peninsula.
Depth: 3 to 7 m.



DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.

The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source of GPS, Google Earth, or unknown.

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