Connecticut Custom Airguns
  • Welcome!
  • Hector's Airgun Blog
  • Products and Products Blog
    • One-Off's
    • The "Héctors Special'" scope by Sightron
    • K1050i FT
    • The Hex Louver or "Secret Sunshade"
    • Pellet Path Calculator >
      • Questions, Answers and Comments on P-P Calc
      • Privacy Policy for PP-Calc
    • The Nautilus SideWheel
    • The X-10 TiltMeter
  • Zimmer-Silhouetten
    • Results 2017-2018
    • Results 2016-2017
    • Results 2015-2016
    • Results 2014-2015
    • Results 2013-2014
  • References and Links
  • Contact us
  • Store

Hector's Airgun Blog

Where we discuss, CIVIILY,  anything airgun.

Return Home

The DIANA 430L.- third, and last entry of an OEM gun

1/23/2019

11 Comments

 

Part 4.- Pellet selection and Chronoing

​Sorry for the delay in getting to this point. I have been extremely busy with some ABP's, but those are done and hopefully, we can now get to work on other things. Though an ABP would seem an ideal addition to the 430L, LOL!
I need to find a a way to make them less complicated.  ;-)

Anyway, after a full tin of pellets had been put through the 430L, we started testing pellets:
Picture
We tested the old trusted standby's, as well as some innovative pellets that I received  from unexpected sources. Funny how things happen just out of the blue, but it is rewarding to see that the Blog is read and respected all  over the world.
Rifle is a Brazilian company, they make pellets in two different "categories" the sport line (which we would call "plinking" here and the Premium line, that we would call "shooting" in the US.
Their Sport line produced "minute of can" groups, not bad, but not what we are looking for.
Their Premium line, however produced some interesting groups.
COAL is a Central European company that makes pellets the old way: rolled. And for the technology, they make interesting designs, however, none of their offerings produced acceptable results from THIS gun. We will be testing them in other guns and we will be offering some advice to the "Rifle Company" because they do have the potential, they only need to polish up some points in their production.

Having said that, we will concentrate then on four different pellets for the 430L:

First, the Baracuda FT, a pellet that is not easy to make shoot well. It has a very rear-wards CoG (Center of Gravity), and therefore requires a somewhat "tight" rifling, but it seems the 430L likes them.
Because the group in the test target above was "tainted" by another group made by pellets that I will not even name, I shot another test group, but this time 10 shots:
Picture
On purpose, I didn't shoot anything else in this target.
Just to show how clean the group is.
Now, 11.3 ft-lbs is nothing to sneeze at, specially if part of the interests of the shooter is an occasional FT Match here and there. But because the BFT (Baracuda Field Target) is a heavy pellet (9.57 grs.) the MV  is rather slow: 731 fps.
Those of you that went to Pyramyd Air Cup, received two samplers of this pellet, classified by lots.
PLEASE, if you have not tested them, do so. H&N went the whole 11 yards to get market feedback, and they deserve our attention.
You do not need to make public your findings (I will not), but a short Email telling them what lot you found best, or if no pellets shot good from your gun, and what gun / lube / MV you are using, is good information for them.
They are NOT doing this as a marketing gimmick, they are really and truly interested in YOUR results. So, please, take the time to shoot some groups, measure them and send the data to H&N. As airgunners WE WILL ALL be better for it.
The BFT is an interesting pellet when it shoots well out of the specific airgun you are interested in because it has very little susceptibility to wind.
Part is due to the weight, and part is the slow MV, but also part is the design of the head...
Will your gun like them?
You need to test, after all, it is part of the fun!

Curiously enough, I found that this particular gun likes the 4.53's JSB's (only offered in 8.44 grs.). It shoots acceptably well  the FT Premium, but the EXACTS are truly amazing.
Picture
Do remember that the black "dots" are a little under ½" and do compare the hole made by the S-100 pellets  (A Match WC) that is truly 4.5 mm's across.
It was notable that the JSB's 8.44's / 4.53's went into two distinct, but very close holes. There are three pellets in the top right section and two in the lower left. But they are so close together!
This points out to the need of controlling the barrel's harmonics, OR, preventing outright the generation of those. In here is where the ABP would probably help.
The S-100's shot better than the RWS SuperMag (a pellet I have found to be very accurate at or above 12 ft-lbs, where the normal Match pellets start destabilizing). But still the Exacts did prove to be the overall best pellet.

As to the Brazilian offerings, the Domed proved to be better than the WC, not surprising at this distance:
Picture
Although I have noted the ME's for the pellets of interest, just to provide you with the data and not make you reverse calculate the MV's, they were:

BFT.- 731 +/- 3  fps
JSB.- 784 +/- 6 fps
S-100.- 815 +/- 5 fps
Rifle Premium "Round" .- 794 +/- 4 fps

Now, in case you are wondering why these groups were shot a 25 yards instead of the usual 35 yds/ 32 meters, the reason is the weather:
Picture
There is a song in Spanish that says:

"Thank you, Life, for giving me laughs and tears
Through them I distinguish joys from heartbreaks
Specially through the eyes of my beloved"

And so, we need to learn to live through the winters and the summers; without both of them, life would be somewhat boring.

Now, indoor shooting also offers some rewards:
Picture
This doesn't happen as often as I would like, but when it happens, it makes you feel Oh, SOoooo Goooooood! LOL!

Conclusions and work for the future

The 430L is definitely an improvement over the 430 and the 440.
It shows clearly how the persons on the assembly floor can contribute to the products, if only management is willing to listen.
The added barrel and lever length make the gun an enjoyable experience.

Accuracy and Precision potential are there, and that is as far as a manufacturer can go, the actual achievement of that potential is up to the users.

Yes, there is still room for improvement but that will take a bit more than getting different parts together. It will take a re-design of the cocking linkages. We'll see where we get on that end.
On the piston end, the gun does exhibit a definite re-bound. A gas spring with its more constant-force curve would be one solution, but then we're back to the large cocking force needed, and straight from the start. Plus the challenges of making the piston a non-rotating piston are not easily solved.
Another solution would be an anti-bounce piston (ABP), we'll look into that later, but we need to re-define (and refine) the design.
The current Muzzle piece almost precludes the use of a Harmonics Tuner, or Harmonics Reducer, we will continue thinking about that, but it would be a funny looking contraption.

Hope you all are enjoying the seasons, the changes, and the challenges that life brings; after all, life is a trip and the final destination is not that enjoyable, ROFL!

Keep well and shoot straight!





​HM
11 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

    Archives

    August 2022
    May 2022
    April 2022
    February 2022
    August 2021
    July 2021
    June 2021
    May 2021
    April 2021
    March 2021
    February 2021
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    September 2019
    August 2019
    July 2019
    May 2019
    April 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    March 2017
    December 2016
    October 2016
    September 2016
    July 2016
    June 2016
    March 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    August 2014
    July 2014
    June 2014
    May 2014
    March 2014
    February 2014
    December 2013
    November 2013
    October 2013
    September 2013

    Categories

    All
    Events
    Gear
    Hunting
    Tests

    RSS Feed

Proudly powered by Weebly