Quote:
Originally Posted by Pete Lester
To those of you using the BP1044 wad, have you had any squib loads? It is reported to be undersized compared to the SP10. One commercial maker of 10ga loads told me he puts a X10X under them for that reason. I found that easy to do with 3.5" loading of bismuth, but in 2 7/8" loadings I stick with the SP10.
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I'm just getting ready to load for 2 7/8" and emailed Ballistic Products about the same issue. They called me and I talked with one of their reloading/ballistics data reps. I was told that the BP1044 wad is a copy of a European wad (not Gualandi) and they bought the molds and design to make it. They made changes to the plastic used and slight changes to the design. He said the gas seal diameter is the same as the SP10 (I measure .002" smaller on the BP1044). He said they worked with RST on the wad and that they still use it. He said powder migration is just the nature of the beast and really became a concern with clear hulls when people could see the components. With enough vibration you can make it happen. Ballistic Products was very nice and receptive with the concern and he said they stand behind their products with repeated testing and R&D. He also said he is writing an article for the LC Smith Journal on reloading 10 gauge 2 7/8".