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The DIANA 430L.- second entry

12/11/2018

9 Comments

 

Part 3.- First Shots

First of all, and to let everyone down from the start, I am NOT going to post MV's for the time being, neither am I going to mention which pellets I am using, just be assured they are "mid-weights".
There is little sense in chronoing and defining a pellet in a gun that has not been "run-in". 

In part 1 we looked into the history of the rifle; and in part 2 we looked into the gun itself.
​
On this part 3 we'll go into those first crucial shots.


The first shots of ANY barrel are crucial to the accurate life of the barrel. In SOME guns, this accurate life may be as short as a few hundred to a thousand rounds (Wildcats, like the 0.22" / 338 Wby Mag), in some other guns, that accurate life may have the potential to be as long as hundreds of thousands of rounds (airguns in general).
BUT, unless you want to find yourself in the need of some heroic measures, like fire-lapping the barrel, then your best bet is to simply do it right from the beginning.

It does require patience and perseverance, but it can be done, and as long as you keep the final goal in mind it is not THAT bothersome. It just takes time.

What you see here is the first target shot with the 430L
Picture
There are 70 shots in this card, 65 in the group at the bottom, and then 5, one at each little chicken on top.
The shots were taken indoors at 15 yards (though the target was designed for offhand shooting at 6 yards, the small size of the animals makes it a fun target to shoot from the FT position).

The ruler is set to 12 mm's (a tad less than ½") and the process to create the group (and to start the run-in of the barrel) was as follows:

1 shot, clean
another shot, clean
repeat for 10 shots (so far, 10 shots)
Now take 5 shots, clean
another 5 shots, clean
repeat till you accumulate 10 cleans (so far, 60 shots)
Now take 10 shots (5 into the group and then one at each chicken), clean
So in this card we accumulated 70 shots.

Time came to get serious and to go to the Monday night airgun practice at DIFTA.
The range there is 10 meters, so I took some targets that are designed for 10 meters, and used one target from those supplied by the club to do some more "running-in"" 
Picture
Each group is comprised of 10 shots, after every 10 shots, the gun got cleaned.
All groups were shot offhand at 10 meters, as required by the rules of the range.

At the same time that the groups were being shot, the scope was being sighted in, after group 4 I reduced the magnification from 9X to 4X (which is about the same as using match iron sights) and proceeded to shoot groups 5 and 6.

It is clear that the gun is starting to settle, groups are becoming rounder, and more controllable.

The fact that group 6 is a "doughnut" speaks more about the shooter's limitations (fatigue and lack of practice)  than about the gun's performance.

So, by this time, the rifle has gone through 130 shots and it has been on a regimen of shoot 10/clean for 7 times.

Because the range session was coming to an end, I decided to shoot a silhouette half course (20 shots), and I would say that the result (14 out 20) is about what could be expected from a new gun and the lack of practice of this winter (there has been no Zimmer-Silhouetten shoot this year, too busy). 
Picture
I did notice, though, one peculiarity of the ZR Mounts provided: Every time I loaded the gun (standing) , my body pushed against the mounts a little, and that was enough to alter the POI.
On the last row (the rams), I took the precaution of resetting the ZR Mounts for every shot (by pushing it forward and letting it go), and that improved the repeatability of the POI.

So, there you have it, the first 150 shots of the new 430L

All in all, I would say that, based on past experience, this gun can/should yield groups of about ½" at 30 yards when properly setup and using the pellets that the barrel will settle into best.
The shot cycle is very nice and completely vibration free. It is quick and authoritative. Nothing "mushy" about the gun, the lockup or the shot cycle.

It DOES take a special technique to cock for extended sessions, as the effort is concentrated on just about 5/8ths-3/4rs of the possible cocking stroke. So a good, sudden, pull that can JUST get the gun cocked is the best way to deal with this.

The 430, the 430L and the 460 share the same lock-up, and so, I will be attentive to detect if this particular model suffers from the same "weaknesses" as those other models. Luckily, those "weaknesses", are well documented and easy to solve.

Am I happy with my purchase? YES!, most of the friends at the shoot complimented the stock, and the looks of the gun, and some even complimented the shooting, LOL! But then they are good friends.

At this price level ($300 + Sh) it is clearly one of the most accurate 0.177" cal springers in this power range.

With this, we're halfway to the 300 shots minimum that I would consider essential to be made under absolutely controlled conditions, once we reach the 300 number, we can open the gun (to do some "looksee" and decide whether it would be wise to get it tuned and to what extent); work on the mounts and on finding the magic pellet; and ,hopefully, add a better scope worthy of the long range capabilities of this little gun.

Keep well and shoot straight!






HM
9 Comments

The DIANA 430L

12/5/2018

9 Comments

 

Part 1.- The creation of the working man

Sometimes in life, there are certain events that have the "smell" of poetic justice.
And this one just might be the case of one.
Let's start with some history:

Back in the days of the "Old DIANA" there were two projects that were supposed to launch DIANA into the world's circuits by making guns specific to a niche market that was, for historical reasons, a very vociferous one: the British market.

Of course the main limitation there is that rifles cannot exceed 12 ft-lbs, and most of DIANA's offerings were easily over that.
Do note the wording of the law: "Rifles cannot exceed 12 ft-lbs."
This, under proper English means that you can have a gun you THINK is legal because you have tested it with all the medium weight pellets that shoot reasonably good and it does not exceed 12 ft-lbs, but then some smart cop that "has your number" comes at you with light pellets.
¿The result?  you guessed it: You have an appointment with Her Majesty's magistrates and a long, hard battle to demonstrate that you are not intent on mass destruction of the Empire's Subjects nor Institutions.

At some point in time, the UK industry, and some companies that export to that market, agreed to self-police and some PCP makers even installed Anti-Tamper devices so that they could not be blamed for "making it easy" on perps to break the law.
DIANA never agreed to that. Studies were conducted using anti-tamper shoulder screws instead of the pins that close the rear of the action and it was found to be prohibitive. Besides, the market for DIANA was (and still is, up to a point), outside the Britannic Majesty's Royal Domains.

So the next solution was to create a short version of some of the actions that could, in most honest cases, limit themselves to about 12 ft-lbs.

And so was born the 430 (as a short version of the 460); and the 280, a short version of the 34.
In essence they share the same piston body length, so you could say that the 430 is the underlever version of the 280, or that the 280 is the breakbarrel version of the 430. Historically speaking the 430 prototype was prior to the 280, though the 280 was commercially  launched before. So, you take your pick.

We came across the 430 when the Stutzen model came into being.

We have always liked the Bergstutzen guns. Light and medium powered, they are ideal for mountain hunting. And so we supported the model.

Even though we warned all the users that the action was limited to about 12 ft-lbs, some decided to ignore the fact and then complain about the cocking effort needed. Yes it was a stout effort, but the guns were never designed to be all day plinking guns.

Fast forward a few years and we come to the present, where the model had been almost relegated because it was a fairly universal complaint that it took too much effort to get only 12 ft-lb back.

BUT, a few of the people at the plant, decided to do something about it, and they installed a long barrel with the 440 muzzle piece, and that allowed a longer lever.
The 430L was born out of the experience and knowledge of the working man. The guy at the plant that tests hundreds if, not thousands of rifles. The guy that puts those guns together.

No engineering degrees, no "Herr Doktor" titles. Just plain common sense trying to make something better.

And so we come to the current state of affairs.

Some were sold in Europe to good success, and at IWA 2018, Airguns of Arizona decided to place an order.

This is the run that we will be discussing here.

Part 2.- The gun

I ordered one under (almost) a pseudonym. Why? I didn't want to risk getting a "selected" model. Too often writers and reviewers are given, even without their knowledge, specially selected guns. I wanted to make sure that I got the run of the mill.
I placed the order on the last days of November, and it arrived today, December 5th. Yes, UPS ground is not the the fastest route, LOL!
I am not a fan of unboxing reviews, but this one merits it because it could explain why some shipments of this particular gun are being delayed.
Gun came "double boxed" but double boxed to a TIGHT degree. It took pushing with the legs another smaller box and pulling with all my strength on the outer box to get one box out of the other.
Picture
Inside the inner box there was a generous layer of eggcrate foam and spacers made out of pellet tin shipping material:
Picture
Scope was mounted and gun was tested (of all things with Baracuda 10.6 grs.pellets) at 20 yards. Why that choice, I really don't know. Odd choice anyway and not representative of the gun's performance potential.
The ONLY reason I can think of is to protect the gun by preventing the dieseling that COULD occur using lighter pellets.
I have not checked zero, that will come at a later date. But it does point out to the fact the AoA is not shipping out boxes. It is actually doing some work to the guns, and possibly the packaging was provided by AoA because it is not the DIANA standard box, nor the new cases that will come online soon.
Another tell-tale aspect is that the serial number is not part of the box
Picture
Someone took the time and patience to cut it out of a "Generic" box, maybe a case of 10 guns (normal size for DIANA).
​
Anyway

The gun is a little longer than the "normal" 430:
Picture
And indeed, this length is dedicated to increase the possible leverage.
Compare the length of the levers in the Stutzen (bottom) and the 430 L (top):
Picture
There is about 2" more lever in the 430L
A different view possibly tells a better story:
Picture
With the fulcrum points fairly aligned, you can see that the 430L has a slightly "beefier" stock (that is fully ambidextrous, BTW), and somewhat more length of handle to grip from.

Now, the measured difference in the lever lengths is of relatively little importance unless we get a meaningful result.
The fulcrum point of the levers is about ½" back from where the action screws are.
In this way, the leverage ratio of the original 430 is approximately : 13" : 3½" that is 3.7
In the case of the 430L the ratio is 15" : 3½" (the cast fulcrum piece has not changed), so that returns a ratio of 4.3
Assuming a compressed spring force of around 170 lbs, then the cocking force of the 430 would be about 45 lbs.
The cocking force needed for the 430L should be about 39½ lbs.
MEASURED values for the 430L can be seen here:
Picture
Picture
Fishing scales might not be lab-accurate, but for the purpose, they are good enough and, above all, they establish a reasonable comparison level.

So, cocking force is reduced by 10%, will this be enough? I don't know. It all depends on the shooters.
For many, the underlever presents a more "ergonomic" way to cock a gun because they can use both arms pulling away and down from the body.

For me, there is still room for improvement, and that may come later in a special edition, but for now this is the offering.

Gun is not a lightweight (DIANA's never are, LOL!), weighing in at 9 # 13 oz with the scope and mounts provided in the combo.
My FT gun weighs in at around 16#, so to ME it is a lightweight gun, but better to let know our friends the weight and let them decide for themselves.
The "Premium" STYLE stock bears some analysis. In this picture the 430L is on top and it is compared to a 34k Premium.
As you can see, the 34k P​remium has a much more "American Classic" flavour to it, straight MonteCarlo, and toe line, slender pistol grip, specially towards the front end, white spacer and slenderer forearm.
On the top, the 430L shows a more "Teutonic" appearance, with the "Ebern" (Boar) back that blends the Monte Carlo to the general curves of the stock, there is also a slight curve on the toe line.
The checkering is also more "restrained", being shorter and less "dynamic".
Picture
What it does have, is a fully ambidextrous cheekpiece, and that is, IMHO, progress.
Minelli definitely knows what they are doing.
In the next picture, the 430 L Is on the bottom, and the 34k Premium is on top:
Picture
Which would be the correct (not to say "right") side for a lefty to look from.

All in all I think it is an agreeable gun to hold, to cock and to shoot.

The fact that the prototype was cobbled together at the plant from existing parts, and then that prototype was refined to what we are seeing today is the most interesting aspect of the whole thing.

How will it shoot? Dunno.

The process of cleaning and shooting and cleaning and cleaning and shooting will start next week, and it is a long, tedious, and serious process.
Only after about 300 shots, and some serious work to the mounts, can we expect to get any reasonable indication of the performance potential of this carbine.

Stay tuned . . . ;-)

Keep well and shoot straight!






​HM
9 Comments

    Hector Medina

    2012 US National WFTF Spring Piston Champion
    2012 WFTF Spring Piston Grand Prix Winner
    2013 World's WFTF Spring Piston 7th place
    2014 Texas State WFTF Piston Champion
    2014 World's WFTF Spring Piston 5th place.
    2015 Maine State Champion WFTF Piston
    2015 Massachusetts State Champion WFTF Piston
    2015 New York State Champion WFTF Piston
    2015 US National WFTF Piston 2nd Place
    2016 Canadian WFTF Piston Champion
    2016 Pyramyd Air Cup WFTF Piston 1st Place
    2017 US Nationals Open Piston 3rd Place
    2018 WFTC's Member of Team USA Champion Springers
    2018 WFTC's 4th place Veteran Springer
    2020 Puerto Rico GP Piston First Place
    2020 NC State Championships 1st Place Piston
    2022 Maryland State Champion WFTF 
    2022 WFTC's Italy Member of TEAM USA 2nd place Springers
    2022 WFTC's Italy
    2nd Place Veteran Springers

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