Here-to-fore, my .177 "heavy" go to pellet has been the Air Arms Diablo Field Heavy 10.3 Gr. I have found this pellet to be very consistent in terms of size and weight, and deadly accurate in several of my springer and pcp rifles.
Three or four months ago, I ordered one of the Crosman 10.5 Gr Heavy Brown Boxes (1250 Count) from Pyramid Air. It showed up last week, with the balance of a complete order sufficient in dollars to be free freight.
I had never shot this pellet, so decided to test it across all of my current .177s in the vault. I shot the pellets to determine their consistency in terms of statistical deviation and group size, not POI. The results can be found below.
Of particular interest, the pellets shot really well out of the Weihrauchs. Not really a surprise when they fit so perfectly as they went into the breach - not too tight, not to loose, just comfortably snug. Several duplicate chrono readings occurred. Note that the Weihrauch 97K, 98, springers, and the Air Arms S510 PCP, shot extremely great groups. So good in fact, that I followed-up with the 97K, making the Crosman 10.5 Gr its new "go to" pellet.
One can hardly do enough testing as not only do you find the occasional new "best" pellet match for a specific rifle, but you learn other things about your rifles as well. In this case, I noticed that my Air Arms ProSport, tuned by Paul Watts now several years ago, was producing approximately 5 fpe less than it did back back last October during other chrono tests. Obviously, it needs some attention and thus it will be the next rifle to be tore down and repowered. I would not likely have noticed this without the chrono in play for this testing.
Before I get to the ProSport repower project, I have just finished repowering an RWS 48, taking it from approximately 9 fpe to +/- 15 fpe. I will be reporting on this project's results before the end of this week.
Enjoy the data. I hope some of you will find this information to be useful, and good shooting to all!
DZ
Three or four months ago, I ordered one of the Crosman 10.5 Gr Heavy Brown Boxes (1250 Count) from Pyramid Air. It showed up last week, with the balance of a complete order sufficient in dollars to be free freight.
I had never shot this pellet, so decided to test it across all of my current .177s in the vault. I shot the pellets to determine their consistency in terms of statistical deviation and group size, not POI. The results can be found below.
Of particular interest, the pellets shot really well out of the Weihrauchs. Not really a surprise when they fit so perfectly as they went into the breach - not too tight, not to loose, just comfortably snug. Several duplicate chrono readings occurred. Note that the Weihrauch 97K, 98, springers, and the Air Arms S510 PCP, shot extremely great groups. So good in fact, that I followed-up with the 97K, making the Crosman 10.5 Gr its new "go to" pellet.
One can hardly do enough testing as not only do you find the occasional new "best" pellet match for a specific rifle, but you learn other things about your rifles as well. In this case, I noticed that my Air Arms ProSport, tuned by Paul Watts now several years ago, was producing approximately 5 fpe less than it did back back last October during other chrono tests. Obviously, it needs some attention and thus it will be the next rifle to be tore down and repowered. I would not likely have noticed this without the chrono in play for this testing.
Before I get to the ProSport repower project, I have just finished repowering an RWS 48, taking it from approximately 9 fpe to +/- 15 fpe. I will be reporting on this project's results before the end of this week.
Enjoy the data. I hope some of you will find this information to be useful, and good shooting to all!
DZ
