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DoctorXring · April 15, 2010, 02:00 PM

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The Ruger No.1A in 243 Winchester is a standard 1:10 twist.

This is a pic of the 80 grain TTSX next to a 105 AMax.
I'm using 46 grains of AA3100. I haven't clocked it,
but it's fast enough.

April 15, 2010, 02:00 PM	#34
DoctorXring Senior Member Join Date: April 30, 2002 Location: The Republic of Texas Posts: 392	. The Ruger No.1A in 243 Winchester is a standard 1:10 twist. This is a pic of the 80 grain TTSX next to a 105 AMax. I'm using 46 grains of AA3100. I haven't clocked it, but it's fast enough.