I have acquired a Ruger No.1 RSI in 243 cal. I'm told the twist is 1:7.5. Can anyone verify this or tell we what the twist actually is? What grain bullets does it like. I will be using it on Deer this fall.
Checking the Ruger web site showed a 243 Varmint #1 with a twist of 1 in 7.7". However, the American rifle in 243 has a twist of 1 in 9". A call to Ruger with the serial number might be in order. Bob!! 8)
My daughter has one but the international forend has been replaced with the Alex Henry style. She has been shooting the .243 Win 87 gr SST® Custom Lite® ammunition from Hornady. It is very accurate in her rifle. My brother has also hand loaded some Nosler Partitions (85 grain, I think) for it that shot very well.