Diana 340 N-TEC Classic air rifle: Part 2

by Tom Gaylord
Writing as B.B. Pelletier

Diana N-TEC 340 Classic
Diana 340 N-TEC Classic air rifle

Part 1

This report covers:

  • Cocking effort
  • RWS Hobby pellets
  • H&N Baracuda Match pellets, 4.50mm head
  • RWS Superdome pellets
  • Why the slow shots?
  • Trigger
  • Evaluation so far

Cocking effort

Today, we’ll look at the velocity of the Diana 340 N-TEC Classic air rifle. I said in part 1 that cocking this rifle is a chore for 2 hands, but I’ve learned something about the gun in this test. The gas spring isn’t the only thing I’m fighting to cock the rifle. The barrel pivot joint is also a bit too tight. The cocking effort is about 35 lbs, which isn’t that bad, but the pivot joint boosts that up to 42 lbs. It made the rifle difficult to measure, but I soon learned to rapidly pull down the barrel and bypass the pivot joint tension. Then, it is a one-handed operation.

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Diana 340 N-TEC Classic air rifle: Part 1

by Tom Gaylord
Writing as B.B. Pelletier

Diana N-TEC 340 Classic
Diana 340 N-TEC Classic

This report covers:

  • What is the 340 N-TEC Classic?
  • Gas-spring advantages and disadvantages
  • The rifle
  • Sights
  • Trigger
  • Shooting impressions
  • Overall impression

Let’s begin our look at Diana’s gas-spring guns. Specifically, we’re testing the Diana 340 N-TEC Classic in .177 caliber. The serial number of the rifle I’m testing is 01583666.

I’m very cautious when testing spring rifles that have gas springs, because dozens of past tests have made me skeptical over the years. The claims for smooth shooting almost never pan out. The claims for accuracy are often inflated. The cocking effort is often played down when I find it to be a major influence in how easy it is to operate the gun.

I’ve seen fewer than 10 air rifles with gas springs that I could recommend to others. So, as I look at this rifle, I’ll be looking from the vantage point of a lot of past experience.

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Pistons and sears

by Tom Gaylord
Writing as B.B. Pelletier

This report covers:

  • Two basic types of pistons
  • Center-latched pistons
  • Side-latched piston
  • See the difference?
  • Gas springs

I’m going to look at how triggers interact with pistons in spring guns today. I thought some of the blog readers may not be aware of some of the subtleties of sears and triggers as they relate to pistons.

Two basic types of pistons

Spring pistons are latched or “caught” by their sears in 2 different ways. These 2 ways are so vastly different that they dictate what types of triggers will work with what types of pistons. Until you understand the differences, you can’t appreciate why certain triggers such as the Rekord won’t work with certain types of pistons.

Center-latched pistons

A center-latched piston has a rod in its center that in some way gets latched or “caught” by the sear. When it’s latched, the sear restrains the full force of the mainspring. That can be well over 100 lbs. of force in the case of a coiled steel spring, or several hundred psi of gas pressure in the 2-piece expanding cylinder of a gas spring. The sear prevents the piston from moving until it’s released by the action of the trigger.

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Umarex Fuel air rifle: Part 5

by Tom Gaylord
Writing as B.B. Pelletier

Part 1
Part 2
Part 3
Part 4

Umarex Fuel air rifle

 

That’s right! The Umarex Fuel carries its own bipod legs tucked against the forearm until you deploy them.

This report covers:

• Scope upgrade
• H&N Baracuda Match pellets
• JSB Exact Heavy pellets
• Air Arms Falcon pellets
• Artillery hold: Better or worse?
• Evaluation

I last looked at the Umarex Fuel air rifle on September 19 — almost 2 months ago. I promised you a Part 5 with an upgraded scope, and today we’ll look at it. I learned an important lesson today about the Fuel that you need to know if you’re considering buying one.

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Umarex Fuel air rifle: Part 4

by Tom Gaylord, The Godfather of Airguns™
Writing as B.B. Pelletier

Part 1
Part 2
Part 3

Umarex Fuel air rifle
That’s right! The Umarex Fuel carries its own bipod legs tucked against the forearm until you deploy them. And, in this test, we’ve learned that they work!

This report covers:

• Shooting off the bipod
• The scope could be better
• RWS Superdome pellets
• H&N Baracuda Match pellets
• What comes next?

Today, I’m backing up to 25 yards and shooting the Umarex Fuel air rifle for accuracy with its scope mounted. You may remember that this rifle slipped off the bathroom scale during the cocking effort test, and the muzzlebrake with front sight hit my leg, shattered and was lost. My leg is almost healed from that. But the scope is now the only means I have of sighting the rifle.

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Umarex Fuel air rifle: Part 3

by Tom Gaylord, The Godfather of Airguns™
Writing as B.B. Pelletier

Part 1
Part 2

Umarex Fuel air rifle
That’s right! The Umarex Fuel carries its own bipod legs tucked against the forearm until you deploy them.

This report covers:

• A different kind of accuracy test
• Let’s go — the artillery hold!
• Scope setting never changed
• RWS Meisterkugeln pellets
• H&N Baracuda Match pellets
• RWS Superdome pellets
• Bipod rested directly on the table
• Bipod rested on soft surface
• Evaluation so far
• Pyramyd Air job openings

Today, we’ll begin looking at the accuracy of the Umarex Fuel air rifle. This rifle has good adjustable open sights, plus it comes with a 3-9x scope and mounts. But in the velocity test, the rifle’s muzzle slipped off the scale and broke off the muzzlebrake that contains the front sight. So, I can’t test it with open sights. Therefore, I mounted the scope and tested it at 10 meters with 3 different pellets.

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Umarex Fuel air rifle: Part 2

by Tom Gaylord, The Godfather of Airguns™
Writing as B.B. Pelletier

Part 1

Umarex Fuel air rifle
That’s right! The Umarex Fuel carries its own bipod legs tucked against the forearm until you deploy them.

This report covers:

• I couldn’t believe it is a gas spring!
• Cocking effort
• Velocity test — H&N Meisterkugeln pellets
• RWS Hobby pellets
• RWS HyperMAX pellets
• H&N Baracuda Match pellets
• Firing behavior and report
• Trigger-pull
• Overall evaluation

Today we look at the velocity of the Umarex Fuel air rifle, and folks — I think we have a winner, here! I’ll tell you why I say that as the report unfolds.

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