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JSB 18.13's

I just ran a 500 ct tin of JSB 18.13 match jumbo exact pellets in .22 through the gauge from the pelletgauge.com. About 2/3's of them were .549 to .550, ansd the rest were .551 - .552. I had about 50 culls that were either out of the .549 - .552 range or had dinged skirts. I don't know how representative this batch is for the JSB product overall, but I'm pleased.
 
"redcrow"I just ran a 500 ct tin of JSB 18.13 match jumbo exact pellets in .22 through the gauge from the pelletgauge.com. About 2/3's of them were .549 to .550, ansd the rest were .551 - .552. I had about 50 culls that were either out of the .549 - .552 range or had dinged skirts. I don't know how representative this batch is for the JSB product overall, but I'm pleased.
It would be interesting if you did the same test with the non match 18.13 jumbo exacts. 
 
OK, so here's a screen shot of the first 2 hits from a search using "JSB .22 pellets on amazon.com
1528222963_4518253535b16d4f3a1ecd7.48708592_Screenshot 2018-06-05 11.19.06.png


Appears to be 2 different weights. 18.13 vs 15.89
 
"redcrow"Well now, this is interesting. I can't find any 'non-match' JSB 18.13 jumbo exacts. I have found some vendors that don't use the word 'match' in their title for them, but the labels all read the same, i.e., from top down, "JSB Match Diabolo Exact Jumbo Heavy .22 Cals, 18.13 grains". What am I missing?
Maybe that's all it is. Some vendors don't use the word "match", and are just overpriced. New to airgunning, and wasn't sure if there are match and regular 18.13 gr JSB's.
 
"redcrow"Well now, this is interesting. I can't find any 'non-match' JSB 18.13 jumbo exacts. I have found some vendors that don't use the word 'match' in their title for them, but the labels all read the same, i.e., from top down, "JSB Match Diabolo Exact Jumbo Heavy .22 Cals, 18.13 grains". What am I missing?
Maybe that's all it is. Some vendors don't use the word "match", and are just overpriced. New to airgunning, and wasn't sure if there are match and regular 18.13 gr JSB's.
 
I've been shooting the 18.13's out of my AA S510 Xtra FAC for a couple months now. They shoot well, but I do get more flyers than I'd like. The skirts on the 18's is definitely stouter than that of the 15's, but they have their share of goobered up skirts too. That's why the TR Robb pellet sizer die appeals to me.You can see the one I ordered here https://www.trrobb.com/product/adjustable%20pellet%20sizer%20177