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Paul B. · October 6, 2022, 02:02 PM

According to the Speer #9 Manual in their reference section, the Marlin and Winchester rifles have a 1 in 12" twist. The .32 Winchester special guns have a 1 in 16" twist. The 30-30 fouled badly during the early days when black powder was used to reload the cartridges. The twist was just too fast for black powder loads. Thus, Winchester brought out the .32 WS. If could shoot the smokeless powder load fairly well and those who preferred black powder could do so without the heavy barrel fouling. The 1 in 16" twist that was used was the same as the black powder 32-40 Winchester.
Paul B.

October 6, 2022, 02:02 PM	#32
Paul B. Senior Member Join Date: March 28, 1999 Location: Tucson, AZ Posts: 3,802	According to the Speer #9 Manual in their reference section, the Marlin and Winchester rifles have a 1 in 12" twist. The .32 Winchester special guns have a 1 in 16" twist. The 30-30 fouled badly during the early days when black powder was used to reload the cartridges. The twist was just too fast for black powder loads. Thus, Winchester brought out the .32 WS. If could shoot the smokeless powder load fairly well and those who preferred black powder could do so without the heavy barrel fouling. The 1 in 16" twist that was used was the same as the black powder 32-40 Winchester. Paul B. __________________ COMPROMISE IS NOT AN OPTION!