Sorted some JSB Monster .22 RD's
- Thread starter Richieg
- Start date
JSB,
shame on you....
And you dare to state the pellet weight with two digits after the decimal, 25.39gr — to make us think the weight is precise up to the hundredth of a grain....
Matthias
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I was hoping to use these for scoring paper rings but no matter what and how I tune for these - didn't wanted to cooperate.
Finally ended up spending some 8-9 tins on 22LR silhouettes. Like a drunken soldier
Finally ended up spending some 8-9 tins on 22LR silhouettes. Like a drunken soldier
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That variation in diameter strongly indicates that they used different dies for that batch/lot. I cast pistol bullets for my powder burners, been doing for 35 years. After casting I size them through a swage die. They all come out within 0.0005" of the nominal die diameter. There CAN be variations in diameter using different lead alloys but as long as you use the same die you'll still get the same precision and consistency.
Regarding weight of projectiles, in my experience as long as they are all within 1% or so of each other there won't be a noticeable drop in accuracy. At least that is my experience with cast bullets for powder burners.
I am ignorant of the means and methods of making airgun pellets. Are they cast then sized in a die? press swaged? Just don't know. I know I have seen molds for sale to make airgun slugs but never diabolo style pellets.
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One thing that stuck out to me was, one press presses 4 pellets at a time and it takes 2 1/2 seconds to make those pellets...and they make 1 million pellets a month. It's amazing they are as accurate as they are...I like to watch this video when I start to complain about JSB pellets.
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Sorted a few tins myself but did not head size them.....Yes, quite a range of weights even in a simple sort like mine.
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Richieg,
FYI - I also have some FX 25.4 gr, .22 cal pellets sorted by weight, did not head size them either. Not quite the fluctuation in weight as the JSB.
And, they shoot equally as well in my Red Wolf .22 HP as the JSB MRD's.
FYI - I also have some FX 25.4 gr, .22 cal pellets sorted by weight, did not head size them either. Not quite the fluctuation in weight as the JSB.
And, they shoot equally as well in my Red Wolf .22 HP as the JSB MRD's.
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The FX pellets are made with the same dies that make JSB pellets. That is mentioned in the factory video. What they did say was...each brand of pellet FX or JSB, each will have the whole batch run for that pellet independently from the other brand. That way each batch or brand is consistent. So JSB batches won't be mixed with FX batches or vice versa.
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i shoot 1-18 gr and right out of the tin they rock now shoot a few fx 25 gr here and there juat same tune and they sure shot very well also just little low like them also
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I tried many things with these MRD's and got to a conclusion that the pellet size difference (5.52-5.53-5.54-5.55) is more critical vs the weight difference of 1 grain (25.1-25.2-25.3-25.4-25.5-25.6).
But a problem I have is,
the new .22 pellet gauge what I received recently - the lazer cut left some micro burr on edges, and I can call it = not to the specs engraved for each hole. So I am using it as a go-nogo only. Unless take some fine grit sandpaper and rework it to -> god knows what size again.
But a problem I have is,
the new .22 pellet gauge what I received recently - the lazer cut left some micro burr on edges, and I can call it = not to the specs engraved for each hole. So I am using it as a go-nogo only. Unless take some fine grit sandpaper and rework it to -> god knows what size again.
Upvote 0