What should a JSB Exact Heavy weigh?

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Saltlake58

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Apr 9, 2015
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Utah, United States
Ok, in the paint drying type of excitement category, what should a JSB Exact Heavy in .22 weigh. I've heard it's 18.13 gr. As I weigh the pellets (freshly calibrated scale), I get from 17.82 to 18.49 with one at 18.52. That seems quite a large range. That seems to be a 4 to 5% type deviation in weights.

Has anyone else seen this size of spread?
Is it normal?
Does it make any difference in the shots?
If it makes a difference, which weight do you prefer for your guns?

While I have a scale, I hate weighing pellets. If it makes shooting more accurate, I'll continue. If it doesn't make any difference, I'd rather watch paint dry than weigh them.

Any thoughts out there?
 
That depends on what gun you are using it in and what you are going to use the pellets for. If the gun is sufficiently accurate enough to take advantage of the deviation of +/- .3grain variation in pellet weights, then ... yeah, it could make sense ... however if you are just knocking over tin cans on an old dirt road ... maybe not. Recently I weighed out a tin of JSB Exact Kings in .25 cal and came up with weights from 24.9 gr to 25.7 grains. The vast majority of which were 25.2 to 25.5 ... I segregated those from the rest and used the ones outside those bounds for just plinking purposes or rapid fire sequences where precision isn't paramount. I will use the ones that fell between 25.2 to 25.5 grains for hunting or target shooting. However you are correct, weighing pellets and checking head diameter is about as exciting as watching a one legged man in a butt kicking contest. 
 
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weighing pellets and checking head diameter is about as exciting as watching a one legged man in a butt kicking contest.

OK, I laughed out loud when I read it. My wife is an amputee from an accident a couple years ago, and sometimes you gotta just laugh!. When she gets that prosthetic on, just stay out of the way! She can't feel it, but you can.

As for the pellets, I'm separating by weight, so anything that's between 18.0 and 18.09 goes into one bin, 18.1 to 18.19 into another, and so on. Plan on shooting groups of each at 50 and 75 yards to see if any work better than the others. Then I'll do the same as you, with those that aren't the most accurate and use for other purposes. I guess more research is required. More range time, more shooting. OK, so I'm not complaining, more shooting! After all, that's what I'm after. 

 
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