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08-11-2017, 07:54 PM | #3 | ||||||
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Craig thanks for sharing this. I see the pressures and velocities as "period correct" for the short ten with 1 1/8 ounce load and they are great loadings for composite barrel guns and with a powder that has and should be available for a long time to come. I also believe this data shows that if one uses their head good short ten loads have and can be wildcatted. I will add these to 2 7/8" reloading data spreadsheet, very helpful since many of the powders on the existing data are obsolete.
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08-11-2017, 08:30 PM | #4 | ||||||
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Craig, I don't load for Ten, but I do for 12,16&20 so am interested in seeing everyone's data. To what do you attribute the jump in pressure in #2 ?
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08-11-2017, 09:19 PM | #5 | ||||||
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My guess would be the Remington hulls.
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08-12-2017, 06:52 AM | #6 | ||||||
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The only difference is the remington hulls. The remington and cheddite hulls have similar internal volume but the plastic used on the cheddite hulls is softer more of a low density polyethylene. You will note that I had to add card wads to these loads versus 7625 because the red dot takes up much less room. Remington hulls have a larger rim diameter and will not chamber in my LC smith guns. Not a problem with federal and cheddite. So I plan to standardize on the cheddite hull since they are cheaper and very durable plus I obtain cheddite hulls from my non reloading buddies that shoot RST,s.
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08-12-2017, 07:42 AM | #7 | ||||||
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Thanks, Craig. Hard to believe that the wall section of the Chedite and Federal shells can absorb as much as 800 psi. I'll admit, it's something I Never gave any thought to in 50 years of reloading.
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08-12-2017, 07:59 AM | #8 | ||||||
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I have not handled a Cheddite 10ga hull, what is the base wad made of? Federal hulls with their fiber/paper base wads are known for lower pressures.
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08-12-2017, 08:31 AM | #9 | ||||||
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Cheddite has a plastic base wad.
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08-12-2017, 09:31 AM | #10 | ||||||
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I think a better question is why does a Federal hull produce lower pressure with all things being roughly equal, it's the fiber base wad, 89% the pressure of a Remington and 93% the pressure of a Cheditte in this test with Red Dot.
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