Companies offering .20 Pellets

Although several have been asked about the possibility, they all said pretty much the same thing. They see no reason to or it's cost prohibitive for such a small segment of the air gun community. AoA did have Daystate branded versions at one point but even those are just rebranded H&N or JSB depending which one you buy but they've been out of stock for quite awhile now. A few air gun makers were also contacted about the possibility of bringing new guns to market in ,20 but they also said the same thing.

The Daystate Kaiser's are H&N.

The Daystate Sovereign and Emporer are JSB's. 

They also had Weihrauch Match pellets the tin says are 13.4gr at one time but those are also very likely just rebranded JSB's. Those have also been out of stock at AoA for quite awhile.

Skenco did have a .20 cal pellet at one time but as far as I can find have stopped making them.

NSA started work on a slug in .20 but for now, shelved the idea. From the little I've read about them, there were some kind of testing issues so for now they're on the back burner and even if they were making them, they might not work in spring piston rifles.

Only other option is the Benjamin Domes but in the few of the 8 .20's I have and tried them in, both the H&N and JSB shot better and that includes my 1973 Silver Streak,,,lol.

I don't look at it as a totally bad thing. What's left is the cream of the crop and at least 2 or 3 of what's left shoot very well in the guns I have so I don't have to test 12-15 or more pellets to try and find one that a gun likes.




 
I like the .20 for target shooting outdoors and find it performs well in different conditions. I can get very good accuracy with JSBs and H&Ns out of my HW97. In 2002 I had a 97 that shot cloverleaf groups with Premiers. I wish Crosman would produce them again. 

As for companies offering new rifles in .20, I think Air Arms would have a winner if it was an option for the TX200 HC. 


 
I've come across any number of fellow .20 cal shooters who'd like to see at least one or 2 new pellets plus a rifle or 2 regardless of maker and the only place that showed even slight interest was JSB who said they'd at least discuss the idea.

For what little it's worth, I own everything but the weihrauch branded pellets. I need to do more testing side by side between the JSB/H&N vs the Daystate branded but the little I have done so far, they seem to shoot the same.
 
True, not many companies give the .20 much attention.

I feel like we were really lucky that JSB came out with the 15.89gr Heavy .20 a few years ago. Amazing pellet. Much higher BC than the 18.13gr JSB in .22 that the mid power .22 shooters seem to love so much. If those .22/18.13 gr shooters had a chance to see just how much better, there'd be A LOT of 20 converts, but that gets back to the point made above (by myself and others), just not many airgun or pellet manufacturers giving the .20 any attention. 
 
Most go down to .177 or up to .22 for more pellet choices. Funny part is most of those end up shooting either H&N or JSB anyway as the pellets a given gun likes...lol.

The makers?? HW still makes a few. Daystate and Air Arms make PCP's in the caliber but other than those, it's just the guys who love the caliber and kept older guns and the crazy amount of Sheridans still out there. Those or have something custom built. Only others were the now discontinued Turkish made Webley Valuemax rifles (I have 4, very accurate little rifles). The company that bought the rights to everything Webley decided to stop making the caliber along with stopping sales in the US. 

.20 sadly has been a niche caliber for more than a few years now and why, except for H&N and JSB knowing they'll make money off the little they do make, others have discontinued making and sales.
 
I don't have a club nearby, but if I shot FT or silhouette the .20 would probably be my choice. I used to only own .177 airguns for target shooting. These days I do most of my shooting in the high desert and plains. I think the slightly larger calibers are more resistant to the crosswinds within normal ranges. 

I believe there are a few companies that could do well with a 5mm option. The RWS 34 EMS would be a good platform for Diana to offer a new .20 cal springer. Crosman should consider bringing back the C9 with a collapsing/folding stock. A take down model like an Air Arms TDR would be a good option for backpacking in any caliber. I think either of these could be popular. 
 
The suggestion has already been made to Diana to consider adding a .20 caliber barrel to the mix for their new 34 EMS since they built it with the easy ability to swap barrels. Where they decide to go with the idea is anyone's guess but by all means send your own email asking about it. You could also shoot Hector Medina at Connecticut Custom Airguns an email and ask about the possibility and cost of having one made but the guess would be quite expensive since the standard rifle is already close to $400. Add the cost of probably an LW barrel, machine work and shop time and you're probably looking at $700-$800.

Both Air Arms and Crosman were among the companies asked about the chance they'd consider bringing a new rifle to market in the caliber and both said no, basically for the prohibitive cost. Hatsan at one time had the tooling to make .20 caliber barrels, probably gotten from the sporting group that bought the rights to everything Webley but said they no longer had it and it would cost to much to consider getting it new then building a model or 2 even though they're the ones that were building the Webley Valuemax .20 rifles that up until a couple years ago were available in the US. They were actually hidden little $100 gems, very accurate, but very overlooked because of who made them.