Anybody's 20 cal Weihrauch prefer JSB heavies?

[Bayman]

I've recently added a R1 that I converted to 20 caliber. There's a limited choice of 20 caliber domed pellets.
Basically goes like this
H&N FTT 11.42
H&N Barracuda 13.58
JSB Exact 13.73
JSB Exact Heavies 15.89.

The R1 doesn't seems to like the JSB 13.73. It shoots the H&N FTT very well but the BC is terrible according to H&N. Other sources say it's better but my gut tells me the H&N numbers are correct.

I tried the Barracuda which is similar to JSB Exact in weight and BC but some reason the barracuda makes 17 fpe when the others make 19. Giving up 2 fpe at the muzzle negates the improved BC over the FTT.

Now comes the JSB heavies. I've tried them in my Rx1 and they shot poorly and at much lower power levels than the other pellets. I wound up basically giving them away.

Has anyone done well with JSB 20 caliber heavies in a Weihrauch? If so were they as accurate and as powerful as the others? I don't want to throw away any more money on the heavies.

Thanks in advance
Ron

[SteveP-52]

Maybe get whoever you gave the Heavies to to send you back 50-100 to test in the R1 before springing for full tins. If memory serves, that RX1 was a problem child for you and maybe part of why they shot lousy and now you have the R1 springer so would seem testing would be the answer maybe. FWIW, my R9 shoots them very well at least to 25 yards, 631 10 shot average, 15 ES and 4 SD for a touch over 14 fpe.

Those 4 you listed also aren't the only pellets in .20 since Daystate, while theirs are made by H&N (Kaisers) and JSB (Sovereign and Emperor), are supposedly made using dies made just for them and not the dies both companies use to make their own.

[Bayman]

Maybe get whoever you gave the Heavies to to send you back 50-100 to test in the R1 before springing for full tins. If memory serves, that RX1 was a problem child for you and maybe part of why they shot lousy and now you have the R1 springer so would seem testing would be the answer maybe. FWIW, my R9 shoots them very well at least to 25 yards, 631 10 shot average, 15 ES and 4 SD for a touch over 14 fpe.

Those 4 you listed also aren't the only pellets in .20 since Daystate, while theirs are made by H&N (Kaisers) and JSB (Sovereign and Emperor), are supposedly made using dies made just for them and not the dies both companies use to make their own.

I've used the Daystate pellets pellets and found no improvements over the same pellets in the original brands. Only they're more expensive. That thing about JSB using different dies for Air Arms has been debunked. They use the same JSB dies as the regular production runs. The difference is that they make the AA in large batches from a single die so they are more consistently sized. Similar to the brown box CPLs. Regular JSBs can have pellets from several dies in a single tin. I suspect the Daystate and FX rebrands are handled the same way as the AA.
The only other available new pellets are the Benjamin Garbage pails and Predators. The Benjamin's are junk in Weihrauchs and the Predators are too expensive to use for target shooting. I have a tin of them if I ever was to try hunting with one of my 20 cals.

Thanks for your suggestion

[Robert 5mm]

Here is a table for comparison of my R1

D.S. = deep seat because the pellet was very tight in my barrel and wasted energy getting it moving into the barrel.

The OEM spring is the original 1988 spring.
The PG2 spring has thicker wire so may not compare to the new PG3/PG4

Note : Not any data saved on accuracy of different pellets...

[Bayman]

Here is a table for comparison of my R1

D.S. = deep seat because the pellet was very tight in my barrel and wasted energy getting it moving.

The OEM spring is the original 1988 spring.
The PG2 spring has thicker wire so may not compare to the new PG3

Thanks for posting your results. Your gun didn't lose much power with the JSB heavies. Do you remember if they were accurate? Kind of a stupid question because every gun is different but I'll ask anyway.

Oh fwiw the new Vortek steel kits use a slightly thinner than stock spring now. Original equipment was 0.152" and the new Vortek HO kits use 0.148". At least as of last month.

[Yogi]

My HW 50 in .20 loves the JSB 13's.  It does not like the lighter H&N 11 somethings.  I have not tried the heavier H&N's.
The Jumbo's, IMHO are to heavy for an HW 50.

HTH?

-Y

[Mark 611]

Yogi, my HW50s will shoot either just as a well, both of my R1's tend to shoot the 13.73 JSB's a tic better the the 11.42 FTT's due to the shot cycle but their still very accurate! IMO you must have a bigger bore or you need to spend more time with the gun and the lighter pellets

[Nate the airgunner]

I’ve never tried them but the 13.73s aren’t near as impressive as the Baracudas through my R9.
Mine shoots Benjamin cylindricals better than it does the 13.73s.

[Yogi]

Yogi, my HW50s will shoot either just as a well, both of my R1's tend to shoot the 13.73 JSB's a tic better the the 11.42 FTT's due to the shot cycle but their still very accurate! IMO you must have a bigger bore or you need to spend more time with the gun and the lighter pellets

Mark, 

I posted my groups with the JSB 13.73's.  Best group I have ever shot.   
My groups with the 11.42 were nothing special.  I have not tried the H&n 13.something pellets.
My groups with the JSB 13.73 were so good, I am thinking about making it my FT rifle.

-Y

[Hoosier Daddy]

I have shot the H&N FTT 11.42, the Benjamin 14.3, and JSB Exact 13.73 in my R10... all 3 performed well.
Then I tried the JSB Heavies 15.89.. worst groups of the four... repeatedly so not a "one time fluke".
 Too bad, I really wanted them to work.
Now I am wanting to try the H&N 'Cuda's

[Mark 611]

Yogi did you check the head sizes of the 11.42's? I find anything under 5.0dia from most posts on here do not shoot well from to many guns, The old stock of pellets I have are 5.02mm dia and shoot very accurately from all my rifles, as said before, the 13.73 JSB's are a good all around fit in most barrels and and are extremely accurate because they slow the shot cycle down just enough for better follow thu upon the release of the trigger, lighter pellets are snappier and give better velocities at the cost of a faster shot cycle that can be more hold sensitive, I have not shot the 15gn .20cal pellets, IMO u might as well be shooting a .22cal spring rifle using this weight of pellet! JMO

[Yogi]

Yogi did you check the head sizes of the 11.42's? I find anything under 5.0dia from most posts on here do not shoot well from to many guns, The old stock of pellets I have are 5.02mm dia and shoot very accurately from all my rifles, as said before, the 13.73 JSB's are a good all around fit in most barrels and and are extremely accurate because they slow the shot cycle down just enough for better follow thu upon the release of the trigger, lighter pellets are snappier and give better velocities at the cost of a faster shot cycle that can be more hold sensitive, I have not shot the 15gn .20cal pellets, IMO u might as well be shooting a .22cal spring rifle using this weight of pellet! JMO

Mark,

I certainly agree with your last comment.  In fact I was hoping the H&N 11.42 would be THE PELLET for this gun.  I think even shooting 13.73's are to close to .22 territory.
When I get a chance, I'm on vaction in Maine right now, I will check the head sizes.

-Y

[SteveP-52]

Yogi did you check the head sizes of the 11.42's? I find anything under 5.0dia from most posts on here do not shoot well from to many guns, The old stock of pellets I have are 5.02mm dia and shoot very accurately from all my rifles, as said before, the 13.73 JSB's are a good all around fit in most barrels and and are extremely accurate because they slow the shot cycle down just enough for better follow thu upon the release of the trigger, lighter pellets are snappier and give better velocities at the cost of a faster shot cycle that can be more hold sensitive, I have not shot the 15gn .20cal pellets, IMO u might as well be shooting a .22cal spring rifle using this weight of pellet! JMO

Random lame thought is they came out with them for .20 cal PCP shooters and owners of more powerful spring guns (R1/HW90, the RX series rifles) that would/could handle a pellet that weight. At least at 25 yards, they shot just fine out of my R9 right along with a few others. Only one target for each of the pellets on there but not bad groups for the four I tried.

[prosportfan]

Not mine and I have a RX2. But if you don't mind, I would like to tell you that it likes Daystate Kaiser which supposed to be the h&n FTT but have a totally different poi and it also like Beeman FTS which are not made any more and I have less than a tin left