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Diana Panther 350 N-TEC Magnum Air Rifle

4.55 reviews
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Diana Panther 350.

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  • 0.177" (4.5mm)

    Caliber: 0.177" (4.5mm), Stock: Synthetic, Handle: Ambi, Diana Panther 350 N-TEC Magnum gas-piston powerplant

  • 0.22" (5.5mm)

2-year limited warranty



List Price $409.99, Orig.Price $399.99 Save $50.00 (12%)

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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 4 answered questions

Diana Panther 350 N-TEC Magnum air rifle

  • Breakbarrel
  • Single shot
  • N-TEC gas piston powerplant
  • Ambidextrous, synthetic stock
  • Fiber optic front sight
  • Rear sight adjustable for windage and elevation
  • Two-stage adjustable T06 trigger
  • Automatic safety
  • Overall length 48.5"
  • Barrel length 19.5"
  • Weight 6.8 lbs (unscoped)


Benefits of a gas-piston powerplant:


  • Smoother cocking
  • Smoother shooting
  • No spring torque
  • No spring fatigue, even if you leave it cocked for hours
  • Functions perfectly in cold weather
  • Lasts longer than a metal spring


The Diana Panther 350 N-TEC Magnum air rifle is one of the more powerful gas-piston-driven airguns on the market today. The innovative N-TEC gas ram reduces the twang, and the spring vibration is eliminated. The enhanced T06 trigger is a 2-stage adjustable trigger that makes your shooting experience a pleasure. For such a lightweight airgun, this Diana model is exceptionally powerful.

youTube video
See manual

other products by Diana

Caliber0.177" (4.5mm)
Max Velocity1250 fps
Barrel Length19.5"
Overall Length48.5"
Shot Capacity1
Cocking Effort55 lbs
Front SightFiber Optic
Rear SightAdjustable for windage & elevation
Scopeable11mm dovetail
TriggerTwo-stage adjustable
Suggested forSmall game hunting/plinking
Trigger Pull1.5 lbs
ActionBreak barrel
Body TypeRifle
Fixed/adj. powerFixed
Weight6.8 lbs
See manual

other products by Diana

Average Customer Review

4.5 (5 reviews)
4 star3 star1 star

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5.0 5.0

5.0 5.0

5.0 5.0

By Daniel from USA on 2018-05-01
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0.00 ratings

Verified Purchase

Things I liked: Very accurate, at 75 yards 1 to 1.5 inch groups

Things I would have changed: Nothing

What others should know: This is not a toy. Watch the back drop over shoot area.


2.0 2.0

3.0 3.0

5.0 5.0

By Rony from USA on 2018-02-16
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0.00 ratings

Things I liked: The rifle has great balance, power and can be very precise. Beautiful lines , the blueing is superb. As for power it surpasses the Diana 460 , this gun is quite capable of bringing down raccoons or fox. I would have loved to give it a five star rating in all categories but for the need of having to professionally tune the gun.

Things I would have changed: It has some serious issues with the screws coming loose and the top hat of the nitro piston shaft is too small for the piston head which makes it wobble. The open sights on my gun were useless. Rifle shoots very well with a scope, but needs the utg weaver mount to compensate for droop.

What others should know: It can be a great gun properly tuned but it seems like something happened at Diana and they cut corners in R&D in a rush to put a Diana nitro piston on the market. I had mine expertly tuned and it turned out to be a fantastic hunting rifle. The power is comparable to the Hatsan 135 but with excellent accuracy at long ranges. I spent the money on a good tune job because Dianas in my opinion are the best air rifles on the market , powerful, accurate and super dependable. Cocking effort is heavy.

5.0 5.0

5.0 5.0

5.0 5.0

By Mike from USA on 2017-11-18
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5.01 rating

Things I liked: Quality of blueing (deep black), good fiber sights, well made synthetic stock, excellent balance. Mounted a BKL droop compensating rail, and a 3 - 9 - 40 scope. Started with crosman 14.3 domes with excellent results. An occasional flyer in the first 100 shots at 65 yards, but 1" to 1 1/2" inch groups of 5 shots were the norm. Had to tighten all screws with Blue Loctite (including all screws for BKL rail & scope) due to loosening after only 100 shots. Changed to crosman php 14.3 from Wally World, and much to my surprise the accuracy was slightly better than the domed pellets. This rifle hits like a hammer even at 65 yards, is loud, a bitch to cock, but a serious shooter. Excellent quality. REAL power, great accuracy.

Things I would have changed: Would prefer a rubber butt pad instead of the plastic version supplied on the gun, because this thing has a real kick. Like most magnums, this gun requires the right kind of hold to maximize accuracy. I found that a firm grip on the fore arm, and a snug fit of the butt into the shoulder improved consistency.

What others should know: Thanks to Pyramid for excellent service. Shipment on time, packaging was excellent, good value for a good gun.


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  • Manuel from USA asked:

    I read that you have to professionally tune this rifle what people mean by that .

    • Manuel from USA:

      Where to tune it and Thank you

    • Tyler from USA:

      Tuning usually means having some custom parts made or a tune kit installed which will reduce the vibration and smooth out the shot cycle of the gun. It is not really necessary, but some people like to do it to make the gun easier and more enjoyable to shoot.

  • Christopher from USA asked:

    Can the piston pressure be adjusted to alter FPS as in an HW90?

    • Tyler from USA:


  • Robert from USA asked:

    Where is this rifle made? Thanks

    • Tyler from USA:


See all discussions

Item Description

DIA-23590205 [PY-4170-7965]
Diana Panther 350 N-TEC Magnum gas-piston powerplant
Caliber0.177" (4.5mm)
Max Velocity1250 fps

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This product is out of stock. Estimated in-stock date 01-07-2019

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