• منطقة بودونغ الجديدة ، شنغهاي ، الصين .
  • [email protected]

Home

With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Register for the world's largest manufacturing technology forum for free ...

اقرأ المزيد

Gunsmithing | Velocity limit of black powder | Practical Machinist

Parker Ackley invested a lot of time and money trying to get to 5,000 FPS and probably didn't make it. I say probably because he used a ballistic pendulum to measure muzzle velocity, an imperfect instrument at best. After a debate about Civil War sniping, I looked up the velocities quoted for replica muzzle loading rifles.

اقرأ المزيد

22 pellet barrel vs rim fire barrel

However the 22 pellet could get by with a very very slow twist due to the shotgun slug like design of the pellets (center of gravity ahead of center of pressure), and would be a lot more accurate with a slower twist. Air rifles are some of the most accurate projectile firing guns in existence. Bill

اقرأ المزيد

Mass produced machined lead airgun pellets?

General | Mass produced machined lead airgun pellets? | Practical Machinist - Largest Manufacturing Technology Forum on the Web. Forums. Manufacturing Today. General. Mass produced machined lead airgun pellets? Obturate. Feb 26, 2013. …

اقرأ المزيد

Gunsmithing | Air-Rifle Blueprints

Most precharged pneumatic air guns and some spring guns can exceed sonic velocity at sea level. Firearms do not maintain the chamber pressure as the bullet …

اقرأ المزيد

Making Your Own PCP Air Rifle

Here is a Quote from the forum: "THE MODERN PNEUMATIC AIRGUN â€" A PRACTICAL STEP BY STEP GUIDE TO BUILDING YOUR OWN" by H. M. Buckley must be the best airgun construction book out there. It covers almost everything from the trigger mechanism build to finishes, & the technical drawings cover every part of the build.

اقرأ المزيد

How are card shoot barrels made?

Distance is 41 yards I'm told at the local club shoot. A few guys brought in the guns and choke tubes and asked me to make a few. One guy had what looked like a Remington 1100 but made in Russia. He had his favorite tube from another gun that he wanted made to fit the Russian. Threads on the Russian were a modified 21mm X 1.0mm.

اقرأ المزيد

Ballistic Machinist 12 Gauge Brass Pellets Ammunition

Qty 5 per box. Great for hunting, Protection, or Barrier penetration These slugs are not only very accurate sub 2" group at 100 yards. They are also some of the deepest penetrating slugs you can buy. Some examples of this are, the slug has gone through 32" of ballistics gel and then over 1" in to a book, it can go through 12, 3/4" pi.

اقرأ المزيد

Mass produced machined lead airgun pellets?

First, congrats on the world records! Very interesting looking air rifle, fine craftsmanship, thanks for sharing the photo. In regards to the book referenced, there are …

اقرأ المزيد

Gunsmithing | Pellets Stuck In Rifle Barrel | Practical …

Joined. Nov 13, 2006. Location. midwest. Nov 26, 2006. #1. I have a 177 cal. pellet rifle that for some reason a pellet got stuck in the bbl.. (about 1/2 way down) The problem is, …

اقرأ المزيد

General | rockwell mill help. | Practical Machinist

i been getting into Air Guns (pellet) doing alot of barrel straightening and have found most production guns need lots of help..even a $300 gun...i also found most of the scope mount dovetails are so far out of tune with the barrel..sooo ive been remachining the doves true to the barrel.and am getting excellent results...thats where the mill ...

اقرأ المزيد

Gunsmithing | primer dies | Practical Machinist

The damp primers are then moved to a drying oven. The priming compound is a mixture of lead styphanate, red phosphorous,a little ground glass and an inert binder. The old chlorate priming compound would be easier to compound. Either one is safe to handle when wet. Making the lead compound requires careful chemistry work.

اقرأ المزيد

Make your own pellets for air rifle • Air Gun Maniac

Another approach for making your own pellets is to use a pellet swaging tool. This tool essentially compresses soft lead into a pellet shape by applying high pressure. The advantage of this method is that it eliminates the need for melting materials, making it safer and easier to use. However, it may require more effort and time …

اقرأ المزيد

Skanaker CO2 pistol resealing problems

-My day job is, in fact, rebuilding and modifying airguns. In this case, specifically paintball guns, but as many of them were originally built off of "pellet" guns, the mechanisms are of course similar. Of late, a fair chunk of my work has been to recreate now-obsolete seals, for guns now old enough that their polyurethane seals have ...

اقرأ المزيد

Air Rifle advice requested | Page 3

Any of the HW rifles are excellent. The HW97 is a very nice rifle and would a excellent choice. It is a little on the heavy side, but if that doesn't bother you it's very accurate and one of the best quality production rifles made today. Flip a coin for what caliber you get. It's more a matter of preference, than one being better than the other.

اقرأ المزيد

Gunsmithing | Air-Rifle Blueprints | Page 3

Section 2: Manufacture: The home workshop manufacture of the pneumatic airgun; O-rings and airguns; Materials for manufacture; Assembly A: Air Cylinder; Assembly B: Slide hammer tube and valve striker; Assembly C: Bolt action receiver and pellet probe; Assembly D: Barrel support bracket, barrel end cap and sound moderator; Assembly E: …

اقرأ المزيد

Resources Archive

With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Register for the world's largest manufacturing technology forum for free ...

اقرأ المزيد

General | Cold air gun vs. mist coolers

Cold air guns suck up a lot of air. Mine uses about 5 HP from my air system to run. I use my cold air gun or flood coolant. I hate misters. Even with 450 CFM ventilation at each machine if I have a mister running after a couple of hours you can see the fog floating in the shop. Bob

اقرأ المزيد

General | Velocity formula. Slightly OT

The end goal here is to set up a remote high powered air cannon and target range that can be accessed on the web, aimed and fired by the user. Target types may include, junked cars, old computers, or simple cardboard targets. So on that point. Any suggestions on ammunition that can be re-used, cheap and easy to make, or cheap …

اقرأ المزيد

Gunsmithing | Air Rifle advice requested

These powerful PCP rifles can blow the skirts out of many commercial pellets making them fly imperfectly. Discovery can take trials . The EunJin heavy pells …

اقرأ المزيد

Pellet Head Measurement For Precision Shooting

Overall, pellet head measurement for precision shooting reduced the group sizes by an average of 11.3%. However, it would not be reasonable to think that by sorting pellets, that you will displace whichever …

اقرأ المزيد

New Buckley Self Build air rifle book

Howard Buckley has come up with a new self build air rifle book. The design is for a pre charged pneumatic (pcp) using a diving buddy bottle as the butt resevoir, this enables you to eliminate the resevoir inlet and outlet valves by using the bottle valve. The rifle is a modern semi skeletal...

اقرأ المزيد

Air blast nozzle that can retract

Not sure if you noticed or not, but haas installs the air line used for the air gun, even if you dont purchase that option. Take a look in the air lube cabinet for a red 1/4 inch line that is tucked in back. Should lead up to inside the spindle head and be capped off. Made putting air blast in real easy.

اقرأ المزيد

Pellets Stuck In Rifle Barrel | Page 3

My recent subject was a Daisy model 160 break barrel pellet rifle from the 1960's made in Scotland. The barrel was plugged and that is probably why the seals in …

اقرأ المزيد

Behind the Scenes: Manufacturing RWS Airgun Pellets

RUAG Ammotec, located in Sulzbach-Rosenberg and Fuerth, Germany, manufactures RWS airgun pellets as part of a larger hunting, shooting, law enforcement and military ammunition. RUAG in Switzerland …

اقرأ المزيد

The Guide to Air Rifle Pellets

To obtain reliable supersonic performance with your air rifle – about 1,125 FPS at the muzzle – you'll need to fire pellets that weight at least 10 grains. It's recommended you stick with lead pellets, too. Alloy pellets in supersonic flight are often too light, and lack the mass to maintain stability downrange.

اقرأ المزيد

General | removing rust with citric acid | Practical Machinist

It can be cut with water to make up to five gallons. It works well when diluted only takes longer to remove rust. It does darken metal, however but that's a good thing for me, since it won't rust again very soon. Heated phosphoric acid is the basis for the Parkerizing process that is sometimes used on gun and automotive parts. Parkerizing ...

اقرأ المزيد

Air Rifle Pellets | For Sale | Airgun Depot

Lead pellets - the staple ammunition for pellet rifles and pellet guns. Alloy pellets - greater velocities, but lack the knockdown power and accuracy of a good lead pellet. Both types serve their own unique purpose and they serve it well. Aside from the capabilities of the air rifle pellets, the shape also matters a great deal.

اقرأ المزيد

Rod for suppressor to bore concentricity

Not so with powder burners. That's first, so I assume you are talking about a 30 cal PCP air rifle. If so, you should use precision shafting as a starter then grind 3 inches of the barrel end to compensate for any pellet choking. Lastly, properly executed.020" is more than adequate pellet to baffle clearance.

اقرأ المزيد

Gunsmithing | Lead pellet making machine | Practical …

I am a small time PCP air gun manufacturer. I want to start precision air gun / air rifle pellet manufacturing on commercial basis. Have searched a lot on web & …

اقرأ المزيد