Anybody shooting JSB Diabolo Exact Jumbo Beast .22 Cal, 33.96 gr ?

[cavedweller]

anyone shooting the following .22 pellets:​

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JSB Diabolo Exact Jumbo Beast .22 Cal, 33.96 gr - speed your shooting them at and how do they behave?​

I'm also curious about the JSB Diabolo Exact Jumbo Monster .22 Cal, 25.39 gr - speed your shooting them at and how do they behave?

 

[Spartan]

I had tried the beasts awhile back and couldn’t get them to shoot fast enough to stabilize due to them being so heavy. They ended up tumbling past 30 or so. A higher power gun would yield different results, of course. But in that situation why not just shoot slugs would be my argument. With the shape of the beasts, you almost can’t even call them a diabolo anymore. It’s at the extreme, so without high speed and a proper twist rate it can’t stabilize like a normal pellet can at the slower speeds. YMMV. Always worth trying.

 

[Reg Creep]

I tried them around 930 - 950 fps but was not happy with accuracy for N50.

Maverick, 600mm, @ 135 bar, using the heaviest factory hammer weight.

I wanted to test 830 - 950 fps, but have too many RDM's to work through first.

 

[iAMzehTOASTY1]

I think I am utilizing these types wayyyy different than everyone else. Those pellets, for me; pests under 30 yards stand absolutely ZERO chance of survival with a proper shot placement
*from 850fps clear DOWN to 400fps

 

[iAMzehTOASTY1]

When I walk n stalk: one of the mags is loaded for back up(god help me if i ever NEED them)

 

[sonnysan]

I tried them in both my .22 career (50FPE) and .22 Sumatra (95FPE). The monsters won out each time. The FPS was somewhere in the 950 - 1100 range.

 

[GotMilk2]

Best pellet for my 22 Sumatra , 950-970 range.

 

[Emu]

I tried them today with my Wolverine hp. Only 10 shots.

Nothing special to report. Speed lowers considerably.

 

[Reg Creep]

Missed the second part of your post. I shoot RDMs 930 fps with nicle size groups at 50. I should be able to tighten that up just a little. RDMs are notorious though for good reason. I sort mine for comps.

 

[Dannyg]

I shoot the Beasts out of my M3 with the 800mm barrel at 990 with .700 to .950" groups at 88 yards. I get moa groups at 50 all day long. It's my go to for raccoons etc out to about 100 or so.

 

[Raider03]

I shoot the Beasts out of my M3 with the 800mm barrel at 990 with .700 to .950" groups at 88 yards. I get moa groups at 50 all day long. It's my go to for raccoons etc out to about 100 or so.

Is that a STX heavy liner?

 

[cavedweller]

I tried them today with my Wolverine hp. Only 10 shots.

Nothing special to report. Speed lowers considerably.

how much did the speed drop from what to what?

 

[Emu]

how much did the speed drop from what to what?

I'm will measure and tell you.

 

[cavedweller]

I guess i'm trying to figure out how "stable" these pellets are and at what speed?

 

[Arzrover]

When we tried them a couple of years ago, the RW would push them to only about 970. From 880 to 930 or so, they would pretty consistently put 4 in 0.75" at 100 and have the 5th 4" or more away. Can't remember if I tried them at 150 to see if it was marginal stability at 100. The bc measured lower than the MRD's though, so I had no real incentive to pursue them for benchrest.
Justin Welch used them in the Utah EFT last year to win by a big margin ... supposedly at 1060 fps. Given the target issues then, I just figured it was the power level as much as anything. He did ok in the benchrest but not better than any other good ammo combo.
Bob

 

[Scotchmo]

I’ve been playing with the Beasts some more lately. Earlier tests always favored the Monsters so I had not yet put too much effort into the 33.95gr. 1:17.7 twist barrel. There seems to be a fairly narrow velocity window where they do best. 980fps to 1040fps. A little faster is OK but shot cycle started to get rough. At 1100fps, grouped like a shot gun at sea level. Testing at 2000ft, seemed a little better. I settled on 1015fps for now. Accuracy is OK, but not great. Getting over 0.06 BC which is very good.

I really want to make them work. I’ll be using them at RMAC benchrest for first serious test. Maybe they will do good if it’s windy.

 

[Emu]

I'm will measure and tell you.

15.9 grain = 1047 fps
34 grain beast = 744 fps

 

[Emu]

how much did the speed drop from what to what?

Checked !!

 

[cavedweller]

15.9 grain = 1047 fps
34 grain beast = 744 fps

ahhh so you didn't speed up things to compensate for weight.... gotcha.

 

[Emu]

It is very difficult to adjust power on a Wolverine. Not much to do …