Thursday, February 15, 2018

ELEY Tenex Air pellets

ELEY announced new product - Tenex Air.
Also. We tested Eley Tenex Air. Not Eley ventus.

Measurements and tests – is thankless job. Too many factors may vary. I will try to exclude subjective factors and will operate only with observed numbers. At the end of the day shooter will decide what ammo to use.

I was allowed to attend the ammunition test at ELEY shooting range in Birmingham. «The guest» was an air pistol of a good shooter.
ELEY Team tested own new product – Tenex Air pellets – 19 different lots. As some of You know – the ELEY ammunition test consists of two phases. The first phase – 10 shots group test to eliminate obvious «no go» lots. The second phase – several 10-shot series for selected lots (lots passed first phase) to detect constancy pattern and exclude good groups by luck during the first phase. Of course the team also tested currently used ammunition by that pistol shooter (the ammunition is believed to be very good with tight groups). The detailed test took 4 or 5 hours. Vice with clamping tools specially milled for that type of air pistol, chronograph and Meyton equipment to get X,Y coordinates :-)
Compressed air cylinder was refilled every 40-50 shots (pressure range during the tests 190-120 bar). But it doesn't really matter I think... the velocity was constant according to the chronograph (most of the tests approx. +/- 1m/s... and the best observed test approx. +/- 0.5m/s). I have never seen such constancy with my typical pellets for hobby shooters like me. Good selected air pistol or premium ELEY pellet quality? Or both? I don't know.

JSB Match Diabolo. Labeled on the tin as 4.49mm.
Measured with laser (contactless) – 4.5099mm.

RWS R10 Match Premium Line. Labeled on the tin as 4.49mm.
Measured with laser (contactless) – 4.5020mm.

The measurement with the caliper will show 4.49mm I suppose.
To say truth – I forgot to ask ELEY for measurements of Tenex Air (printed results like above). Therefore I don't know if Tenex Air caliber declared as 4.49mm, 4.50mm and 4.51mm are real. The competitor pellet's weight was OK (+/- constant and as declared on the tin). The chemical composition is approx. the same according to the ELEY lab results.

The numbers for that particular pistol/barrel and other conditions on that day (all groups are measured edge to edge / the velocity was approx. the same +/-):
  • 19 Tenex Air lots (4.49, 4.50 and 4.51mm) and two competitors (JSB and R10 both declared as 4.49mm) were tested
  • R10 - best achieved 10 shot group was 8.3mm and the average was 8.7mm (3x10 shots test)
  • JSB - best achieved 10 shot group was 7.0mm and the average was 8.4mm (3x10 shots test)
  • 7 Tenex Air lots passed the first phase (<= 7.4mm - absolutely free selected criterion) and were tested once again in the second phase.
  • In the second phase 6 of 7 lots of Tenex Air outperformed tested competitor's pellets:
    average values were 7.6, 7.3, 7.7, 7.6, 8.9, 7.7 and 7.9mm.
  • The Tenex Air lot with the average 7.3mm also showed best 10 shot group of the day - 6.8mm.
Typical 10 or 5 shot paper target tests are not sufficient (forget it now). You may think that your gun shoots «hole in hole» but it's not true. Additionally we have to exclude any «good» group by luck. Long tests needed.
ELEY invests much time and efforts in .22lr TENEX tests with customers. The same approach for .177?
Plastic box divided in several sectors is OK. Prevents the pellets from damage if the box is't full anymore (do You remember metal tin with 50 last pellets? Yeah... let's shake it baby :-)).

Other impressions:
I had a short factory tour. ELEY automatically tests .22lr cartridges in so many ways during the production cycle. So much efforts to make Eley shooters happy (especially Tenex shooters from ISSF pool).

Wednesday, November 8, 2017

Handgun cleaning tools

Separate cleaning rod for every handgun – it is a horror. Typically cleaning rods are not interchangeable (brushes and jags have different thread size, direction, step, male/female... whatever).

I checked my box, where I store the cleaning tools. Watch out:
  1. .22lr bore snake for the free pistol
  2. .22lr special long cleaning rod for the free pistol (inkl. nylon and brass brush, jag)
  3. .32 S&W cleaning set for Hämmerli SP20 (inkl. nylon and brass brush, patch loop)
  4. .22lr usual short cleaning rod with tools for AW93 and Pardini SP
  5. .38 nylon + brass brush and mop (luckily thread fits the rod of my AW93)
I also have a lot of unused tools from Pardini SP and my second free pistol.

To the #5 I must say - I used these tools once... really. I bought them to clean my .38 S&W 14.
I wiped twice every cylinder chamber and may be 6 or 8 times the barrel. Set price 5€. Look at this:

Seller was fair and warned me that this brass brush won't stand long. I didn't believe.

Fortunately I saw THIS - J. Dewey nylon-coated rods. One cleaning rod with tools for every caliber that I own. With qualitative bronze brushes. Cleaning system which I always wanted. U.S. tools and accessories maker are unbeatable in my hold opinion. Every time I search for something special - I find it in U.S. and it is 2 or 3-times cheaper than in EU (even with shipping).

My set includes nylon-coated rod and jags und brushes for .22, .30, 8mm and .38.
I didn't want to invest too much and therefore I ordered only basic "must have" tools (I don't need nylon brush if I can use jag with oiled patch etc...).

Tool-set "to go" for my three calibers.

But I have to keep my old soviet .22lr cleaning rod for the free pistol and it's long barrel - 300mm / 12in - or even longer (inkl. distance to the chamber - cleaning it from the grip side).

Sunday, September 3, 2017

Smith & Wesson 14-3 custom grip

New project - custom match grip for Smith & Wesson 14-3 (1969).

The grip is almost ready. Next year after all minor corrections it will be finished (lack & checkering job). Now I have to shoot with it a little bit to be able to understand if I must cut the grip somewhere (fine tuning).
All photos in album

Saturday, June 4, 2016

Air pistol tests

Saying in German: "Wer misst, misst Mist!" (English: "The one who measures measures crap").

But anyway... Today invested time to get to know how good/bad my cheap hobby air pistol ammunition is.

Vice. Combro chronograph. Three different ammunition. Two different pistols.

My tests say almost nothing. It is important to understand. Results may vary from pistol to pistol of the same model. Too many components are involved.

Your results with your guns will be different. That's life...

Steyr LP10E 10 shots

Feinwerkbau P 8X 10 shots

Tested ammunition:

  • H&N Final Match LG (Air Rifle) 4,49mm
    Average head diameter = 4,472mm
    Average weight = 0,531gr
  • Holme Premium LG & LP (Air Rifle and Air Pistol) 4,50mm
    Average head diameter = 4,437mm
    Average weight = 0,519gr
  • JSB Match Light Weight 4,50mm
    Average head diameter = 4,463mm
    Average weight = 0,499gr

Average values calculated after 10 random tests.

Holme Premium is my training ammo. Price about 6€ per 500. (who makes ammo with "Holme" label? RWS?)

What I have noticed. Head diameter deviation is almost the same for all three types of ammo. The weight - also similar deviation. Deviation graphs are really almost the same for all three ammo and are not interesting here.
But what makes JSB so stable (flat velocity line)? Obvious answer for now - weight. Lower weight causes higher velocity. Higher velocities have smaller deviation (in our case)?

Best groups (10 shots) were:

  1. JSB + LP10E
    Holme + P 8X
    (equal size... about 1.66mm center-to-center)
  2. JSB + P 8X
  3. H&N + P 8X
  4. Holme + LP10E ***
  5. H&M + LP10E
*** - The group was very tight with one "flyer". Without that "flyer" the group would be positioned also on the first place. Preparing values for deviation calculation I have noticed that some Diabolos are heavier... 0,513... 0,517... 0,515... 0,530! Etc... I think such "irregular" weight caused that "flyer".

It is easy to get good groups with H&N too. But we have to increase the velocity.

Thursday, June 2, 2016

P 8X Trigger

Played with the trigger settings a little bit.
Set about 80% of the weight for the first stage and the rest for the second stage. Straight forward manual for everyone.

After all I noticed a pin made of Neodymium (magnet). It "catches" and holds the sear after release (that sear holds the hammer). Clear trigger feeling. Short second stage. Minimal after-travel. No bouncing parts.

Strong Neodymium natural magnet

Feinwerkbau P 8X

Some infos and photos.

Weight specs (+/-):
  • Grip + main frame + naked barrel: 686g
  • Barrel shroud: 26g
  • Aluminium compensator + steel front sight: 18g
  • Steel comp + steel front sight: 42g
  • Air tank: 210g
  • Weight block for the barrel shroud: 14g (one item)

Tested pistol delivered with two comps - steel and aluminium.
Some weights.

Intelligent mounting rail for weights. Weights are different. Symmetrical (left/right).   

Barrel shroud without mounting screws. It "sits" simply there pushed back by comp and over. Good.

Trigger guard - kind of plastic but good quality.

Very qualitative rear sight I would say...

Comp with two mounting screws on the top.

Trigger shoe. Rotation in any direction possible (ball joint).

Six adjustment screws.