by Tom Gaylord
Writing as B.B. Pelletier

Diana 50
Diana model 50 underlever.

Part 1
Part 2
Part 3

A history of airguns

This report covers:

  • Low light
  • The test
  • RWS Superdomes
  • RWS Superpoints
  • Falcon pellets
  • Discussion of the results
  • Next

Today we are back with the Diana model 50 underlever spring rifle, shooting at 25 yards. I have a couple things to tell, so let’s get started.

Low light

First, my quartz light that I always us to illuminate the target was on the fritz, so for all of today’s shooting I illuminated the target with a powerful flashlight. It wasn’t ideal, but I believe it worked okay. I learned one thing for sure — I need a backup quartz light!

I remembered to switch the front sight post to the large square-topped one that’s best for target shooting. I wouldn’t have that as an excuse for poor marksmanship!

The test

I had planned to shoot the test with both the peep sight and the open sight for a little surprise. But moving the open sight takes time and I wanted to give this test my full attention, so I will do a separate test with the open sight at 25 yards.

And this was where one surprise came up. While examining the rear sight I noticed the peep is loose with seemingly no good way to tighten it. I will look into this more, but that could be a problem for accuracy.

I remembered that the rifle likes the artillery hold, but I didn’t quite remember how nice the trigger is. It moves in stage two but there is no creep and the release comes as a surprise. When coupled with the slim stock, the trigger is a real plus, because the rifle feels just right to me.

RWS Superdomes

The first pellets I tested were the RWS Superdomes that proved so accurate in the last test. This time 10 pellets went into 1.044-inhes at 25 yards.

Superdome target
Ten RWS Superdome pellets went into 1.044-inches at 25 yards.

RWS Superpoints

I had to try RWS Superpoints next because they were so tantalizing last time. You may recall that 9 went into 0.549-inches at 10 meters, and the other one opened the group to 1.064-inches. That was both the best and worst group of that test.

This time the greater distance sorted things out. At 25 yards, 10 Superpoints made a 1.959-inch group. I think the lighting may have had something to do with this, but not that much.

Superpoint target
Ten RWS Superpoint pellets made this 1.959-inch group at 25 yards.

I expected a better group from the Superpoints. That led me to wonder about other pellets I hadn’t tried yet. The Air Arms Falcon is always a contender, so I decided to make it the last pellet of this test. They certainly got down to the target quicker than the first two!

Falcon pellets

Ten Falcon pellets made a 1.809-inch group at 25 yards. So the Superdome is still the clear winner in the Diana 50.

Falcon target
Ten Falcon pellets went into 1.809-inches at 25 yards.

Discussion of the results

I expected smaller groups from this rifle. The lighting was one possible problem and the movment of the peep sight was another. If I get much better results from the open sights in the next test I may revisit this test.

Accuracy aside, I really like the way this Diana 50 shoots! I like the trigger and I like the way the rifle holds.

There is a little bit of buzz when it fires, so it might be necessary to inject some Almagard 3752 grease into the mainspring to quiet down the powerplant. That could only make the shooting experience that much better. I might have a go at the trigger adjustment while the stock is off (for access to the mainspring). Don’t know if I will do any of this, but I’m writing it down as a reminder.


Next I want to test the rifle with open sights at 25 yards. Hopefully I’ll have the light sorted out by then.