JSB .22 20.83g MRD Light

I just received a bunch of tins of these new MRD “Lights” today.

I’m hopeful that they are a good match with DS Wolverine R HP. It shoots both the 18.13g and 25.39g very well, but I have a feeling that 21g should be about perfect velocity-wise…

…. I’ll post results when I get a decent wind day.

-Ed

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I just received a bunch of tins of these new MRD “Lights” today.

I’m hopeful that they are a good match with DS Wolverine R HP. It shoots both the 18.13g and 25.39g very well, but I have a feeling that 21g should be about perfect velocity-wise…

…. I’ll post results when I get a decent wind day.

-Ed

View attachment 472545
Have you weighed a few yet? Very curious if the ”Exact” part is more accurate than it has been …
 
Have you weighed a few yet? Very curious if the ”Exact” part is more accurate than it has been …

Hi Scotty1 and MRD Shooters,

I got these from Trenier - so awesome packing - perfect tins received.

Scotty you owe me a beer for dragging out my scale, lol. Haven’t weighed a pellet since NAC and wasn’t planning too…

… first I will say that the skirts are perfect! I have not seen JSB/FX pellet skirts this perfect in a long time - possibly ever - pellets are very uniform, no mold marks - really nice.

Now for the weights, here are the first 20 I grabbed from the tin:

.66 .96 .94 .74 .58 21.08 21.04 .98
.78 .80 .58 .58 .82 .94 .72 .48
.50 .98 .92 .82

So not impressive in terms of weight consistency - typical JSB.

-Ed

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I bought some of these from Trenier too. As usual, he packs the pellets as if they were fine china. Jeff is AWESOME! I have only tried 1 tin so far, but the usual number of skirts seem to be bent - about 1 in 10. Not bad, but noticeably bent - typical JSB. The skirts are super thin on these. I tried them out of my RAW at speeds between 850fps - 975fps. The best groups averaged about 3/4" at 25yards. Since the groups weren't great, I didn't test them at further distances. The MRD Deeps set the benchmark in my barrel shooting 1/4" at 25 yards and 5/8” at 50 yards.
 
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Did they change the lead formula they use...all of the JSB's have become a disappointment.
A few flashes of their old brilliance, then you get a flier that goes it's own way.
The Grands and the Shallows I purchased "looked" good, but i guess i have no ability of distinguishing these fliers. Weighed, rolled...Doh!
I hope the Lights will be more consistent, but i think i already know how they will perform. --
Your thoughts while shooting~~~~Nice, Sweet, Oh yeah! ....wtf?
I hope i am wrong
Mike
 
Hi Scotty1 and MRD Shooters,

I got these from Trenier - so awesome packing - perfect tins received.

Scotty you owe me a beer for dragging out my scale, lol. Haven’t weighed a pellet since NAC and wasn’t planning too…

… first I will say that the skirts are perfect! I have not seen JSB/FX pellet skirts this perfect in a long time - possibly ever - pellets are very uniform, no mold marks - really nice.

Now for the weights, here are the first 20 I grabbed from the tin:

.66 .96 .94 .74 .58 21.08 21.04 .98
.78 .80 .58 .58 .82 .94 .72 .48
.50 .98 .92 .82

So not impressive in terms of weight consistency - typical JSB.

-Ed

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View attachment 472716
Yes Trenier packs great, I always feel guilty throwing away the padded envelopes. Kind of a bummer about the weight spread.
 
I bought some of these from Trenier too. As usual, he packs the pellets as if they were fine china. Jeff is AWESOME! I have only tried 1 tin so far, but the usual number of skirts seem to be bent - about 1 in 10. Not bad, but noticeably bent - typical JSB. The skirts are super thin on these. I tried them out of my RAW at speeds between 850fps - 975fps. The best groups averaged about 3/4" at 25yards. Since the groups weren't great, I didn't test them at further distances. The MRD Deeps set the benchmark in my barrel shooting 1/4" at 25 yards and 1/2" at 50 yards.
That's terrible grouping! I hope that's not the case for them in general. The Beasts were similar in the poor accuracy department. I was hoping these would be better.
 
The Wolverine R HP shot them well - as well as the 18.13s. It was shooting them around 958fps. My Wolverine R HP seems to have dropped velocity since last year. For example, it used to shoot the 25.39g MRDs at 895fps and now shoots them 860fps.

So then I tried the 20.89g MRDLs in my Taipan Veteran 2 (550mm). First shot was 888 so I dialed up hammer spring preload a bit more to 920fps. It put the first 10 I shot into a 1/2” hole at 40 yards. So I’ve definitely got one rifle that likes MRDLs.

Personally, for the cost of these MRDLs, I’d rather just tune rifles to shoot the best JSB/FX pellets well, as my usual target distances are 50 yards and in:

.177: 10.3 and 13.4 (13.4 around 810-820fps)
.22: 18.13 and 15.89
.25: 25.4

Today, my scores are low and I just don’t know why, but it sure isn’t the pellets or the rifles…

-Ed

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Doc, I've been trying to practice that stratagy. I've used that for rational to justify a new gun, well I've got all these pellets now I just need a gun they they will work in. I've got my Phd in twisted thinking and rationalizing.
I've done the same. Bought more guns so I could justifying keeping a couple hundred dollars in a certain pellet. It's all about the fun though, right? Right? Lol
 
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Doc, I've been trying to practice that stratagy. I've used that for rational to justify a new gun, well I've got all these pellets now I just need a gun they they will work in. I've got my Phd in twisted thinking and rationalizing.
I’ve got my masters in cursing, and have had several papers published … mother****er!
 
That's terrible grouping! I hope that's not the case for them in general. The Beasts were similar in the poor accuracy department. I was hoping these would be better.
Yeah, it just like manabeknives said above - I'd get 2 or maybe 3 pellets per group that would stack, and then 1 or 2 flyers. Not good. I have had similar experiences with the Grands. The deeps on the other hand shoot great! My barrel is so picky that I quickly bought 20 tins of the deeps hoping to get the same early batch. Given JSB's recent trends, who know how long the shape will stay the same before they randomly change it, or before the dies wear out 🫤
 
The Wolverine R HP shot them well - as well as the 18.13s. It was shooting them around 958fps. My Wolverine R HP seems to have dropped velocity since last year. For example, it used to shoot the 25.39g MRDs at 895fps and now shoots them 860fps.

So then I tried the 20.89g MRDLs in my Taipan Veteran 2 (550mm). First shot was 888 so I dialed up hammer spring preload a bit more to 920fps. It put the first 10 I shot into a 1/2” hole at 40 yards. So I’ve definitely got one rifle that likes MRDLs.

Personally, for the cost of these MRDLs, I’d rather just tune rifles to shoot the best JSB/FX pellets well, as my usual target distances are 50 yards and in:

.177: 10.3 and 13.4 (13.4 around 810-820fps)
.22: 18.13 and 15.89
.25: 25.4

Today, my scores are low and I just don’t know why, but it sure isn’t the pellets or the rifles…

-Ed

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View attachment 472793
That's a sweet group! Wanna buy 10 more tins 😁
 
I had some tins delivered today.

Left is a 18.13, middle is the new Monster Lights, and right is a 25.4 Monster RD.
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They look promising. The 18.13 has always seemed too narrow waisted to me, almost like a .177/8.44, which is NOT a very high BC pellet shape. And maybe it's not so much the width of the waist of the 8.44 and 18.13 but maybe more the juncture of the angles of the head and skirt. The new .22/20.83 seems more proportionate to the general shape of a .20/15.89, which is one of my favorite long range performers.

I'm not a pellet weigher, but did place 5 random pellets on the scale, in the interest of objectivity. All five were between 20.8 and 21.1. I'm sure that range would grow as the number of pellets weighed goes up. But those five told me all I need to know regarding weight, they're as close as any other JSB variety, and good enough for my uses.

Hope to eventually get around to measuring BC. Interestingly enough, at one point I had multiple .22 guns in the 30-35fpe range, but now have none set up for that, my .22s are more like 54 and 60fpe right now, for MRDs and Grands. So I might have to do some adjusting to get an appropriate speed for these. I'm betting somewhere between 890 and 930 for optimal results, and I suspect the BC will be in the 0.044-0.048 range. It MIGHT be as high as 0.049-0.05, but that's likely a bit too optimistic.
 
I had some tins delivered today.

Left is a 18.13, middle is the new Monster Lights, and right is a 25.4 Monster RD.
View attachment 474312
View attachment 474313

They look promising. The 18.13 has always seemed too narrow waisted to me, almost like a .177/8.44, which is NOT a very high BC pellet shape. And maybe it's not so much the width of the waist of the 8.44 and 18.13 but maybe more the juncture of the angles of the head and skirt. The new .22/20.83 seems more proportionate to the general shape of a .20/15.89, which is one of my favorite long range performers.

I'm not a pellet weigher, but did place 5 random pellets on the scale, in the interest of objectivity. All five were between 20.8 and 21.1. I'm sure that range would grow as the number of pellets weighed goes up. But those five told me all I need to know regarding weight, they're as close as any other JSB variety, and good enough for my uses.

Hope to eventually get around to measuring BC. Interestingly enough, at one point I had multiple .22 guns in the 30-35fpe range, but now have none set up for that, my .22s are more like 54 and 60fpe right now, for MRDs and Grands. So I might have to do some adjusting to get an appropriate speed for these. I'm betting somewhere between 890 and 930 for optimal results, and I suspect the BC will be in the 0.044-0.048 range. It MIGHT be as high as 0.049-0.05, but that's likely a bit too optimistic.
Looking forward to your findings Cole. You don't sugar coat nothin lol
 
I had some tins delivered today.

Left is a 18.13, middle is the new Monster Lights, and right is a 25.4 Monster RD.
View attachment 474312
View attachment 474313

They look promising. The 18.13 has always seemed too narrow waisted to me, almost like a .177/8.44, which is NOT a very high BC pellet shape. And maybe it's not so much the width of the waist of the 8.44 and 18.13 but maybe more the juncture of the angles of the head and skirt. The new .22/20.83 seems more proportionate to the general shape of a .20/15.89, which is one of my favorite long range performers.

I'm not a pellet weigher, but did place 5 random pellets on the scale, in the interest of objectivity. All five were between 20.8 and 21.1. I'm sure that range would grow as the number of pellets weighed goes up. But those five told me all I need to know regarding weight, they're as close as any other JSB variety, and good enough for my uses.

Hope to eventually get around to measuring BC. Interestingly enough, at one point I had multiple .22 guns in the 30-35fpe range, but now have none set up for that, my .22s are more like 54 and 60fpe right now, for MRDs and Grands. So I might have to do some adjusting to get an appropriate speed for these. I'm betting somewhere between 890 and 930 for optimal results, and I suspect the BC will be in the 0.044-0.048 range. It MIGHT be as high as 0.049-0.05, but that's likely a bit too optimistic.
I look forward to what you find, here are a few things i have noticed
What i 1st noticed in your picture was the surface appearance of the pellets, especially in the inner skirts.
On the 18.1 g..i am guessing these are an older stock..the apearance of the head and skirt is clean and defined, while the others look like they been through a rock tumbler.
It looks like they are losing material on the skirt, because the inner portion, closest to the bottom, looks scratched up, and the thinner skirt does not look uniform. Don't know what is the cause. It can't be a dirty dies since they were just made. Why are they not as smooth in appearance as the 18.1??
One other note, why is there a "sunburst" pattern at the base of the lights? i don't know why it bugs me, but it just doesn't seem right to me
Last observation is the flat line around the head of the pellets.
The 18.1g has a flat band around it's head's circumference, a consistent point of contact, where the other 2 lack that band and have an contact area that's irregular. I remember there was a time when you could get tins of the 18.1 in differenr head sizes 5.52 and 5.53..Not offered anymore Was this a quaility check they have done away with?
Something has changed for the worse in JSB. Quality has declined while their prices have risen. The once mighty is showing signs of complacency, and their laurels are wilting
Looking forward to your more scientific finding
Mike
 
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