The L.C. Smith Collectors Association

The L.C. Smith Collectors Association
[ The L.C. Smith Collectors Association ]

12ga re-loads

Posted by Bob Haase on March 10, 2025, 2:36 pm

can someone tell me why using Hodgdon reloading manual a winchester AA 2 3/4 hull using the same powder, primer, wad, and 7/8ths lead is 6200 psi and a Remington nitro 27 hull is 5500psi with only a 50fps change in speed.

Re: 12ga re-loads

Posted by David Williamson on March 11, 2025, 6:09 am, in reply to "12ga re-loads"

In a brief explanation the "hull" configuration.

Re: 12ga re-loads

Posted by Bob Haase on March 11, 2025, 7:45 am, in reply to "Re: 12ga re-loads"

Thanks, I thought that but I can't see a difference with my eye.

Re: 12ga re-loads

Posted by David Williamson on March 11, 2025, 3:46 pm, in reply to "Re: 12ga re-loads"

Bob, it is the inside difference. Jent Mitchell was the first person I know of that brought out the difference between the new Winchester AA hull and the famous Winchester AA compression formed hull and it was the inside that I believe was tapered at the bottom. I don't use them so maybe he will come along and say.

Re: 12ga re-loads

Posted by Bob Haase on March 12, 2025, 7:22 am, in reply to "Re: 12ga re-loads"

Thanks

Re: 12ga re-loads

Posted by Steve Arnett on March 23, 2025, 7:23 am, in reply to "Re: 12ga re-loads"

Bob, the differences between Remington compression formed hulls and the "new" AA HS hulls is pretty minor. I wouldn't be too concerned about the difference in published pressure. WW supposedly made up for the internal differences with a high, tapered base wad. A more annoying thing to me is that the WW hulls are shorter. This sometimes requires adjustments on the press to get the crimp right. Which powder are you using?

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