Heavies Pellet Sorting
Well in summary, it looks like my gun (2013 Matador R3M .25 long) prefers the larger head diameter. This surprised me, testing the JSB MKII Heavies (Deep Skirt) or the similar Edgun 34g. The following results entailed (6) 5 shot groups @ 50 yds, of each specified head diameter. This testing was very comprehensive, as 1500 pellets were cleaned, inspected and sorted for weight and head diameter. Roll sorting was discontinued (for skirt diameter consistency), when it became evident that this was a waste of time, as they were all very consistent. Groups were shot alternating through each head size, to maximize a comparable environment…there was changing wind so comparative accuracy, rather than absolute accuracy, was the goal. Here’s what I came up with:
6.37mm- .99″ ctc
6.38mm- .96″ ctc
6.39mm- .75″ ctc
6.40mm- .63″ ctc
6.41mm- .58″ ctc
Unsorted- .76″ ctc
Note that “unsorted” pellets came in, where expected and the accuracy trend lends itself to validate this test. Also noted was, the Edgun 34g were more consistent in head diameter averaging midrange diameter. My overall conclusion is that sorting helps a little bit but is probably not justified. I see more accuracy gains in finding the pellet lot that works best for my gun…in this case the old MKIIs with the shallow skirt. On a side note, I tried lubing some unsorted pellets, that had been cleaned and tested them against non-lubed, in no wind conditions. The accuracy gain was insignificant with results being .56 ctc vs .58 ctc, respectively. The big surprise was the gun seemed to digest the larger head diameter better than the smaller diameter…I would have expected the opposite. Here’s an example of on card w/ the 5 head sizes represented:
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I was not trying to imply that larger head size would weigh more just seeing if you weighed them and if there was any corrilation. Either way from what I have noticed when sorting pellet from size and weight the weight played a bigger roll in accuracy.
Did you note what was the size trend to be larger or smaller heads per tin? It would stink if majority of the pellets are on the smaller head size for the simple fact you can alway down size pellet but you can’t make them bigger.
Mid-size for JSB MK II and smaller for Edgun 34g.
I tested JSB Heavy .22 with Pellet Gage and honestly it is a waste of time as they are really consistent when it comes to head size.
I was not trying to imply that larger head size would weigh more just seeing if you weighed them and if there was any corrilation. Either way from what I have noticed when sorting pellet from size and weight the weight played a bigger roll in accuracy.
Did you note what was the size trend to be larger or smaller heads per tin? It would stink if majority of the pellets are on the smaller head size for the simple fact you can alway down size pellet but you can’t make them bigger.
You are correct, sir. I was curious about the thing…I had 7 different weights excluding bastards, and then head sized each group. I watched for this scenario and there was nothing definitive, indicating more weight because head diameter variations were so insignificant.
I do not think the bigger head implies more weight as the skirt may be less beefy.
Did you happen to weigh the different head sizes? I am curious to see if larger head size also weighs more compared to small head size.
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As was my experience with the Edgun .25 34g, using my pellet gauge. Not so much so with the JSB deep skirt Heavies.