I'd suggest talking to your 'smith before you buy the butterknife bolt handle, as some of them are quite sharp, so much so that cycling the action can be a little painful, and some of them require a high bolt lift, such that you might need to use higher rings. Some of the Interarms Mark X mannlicher stocked rifles had an attractive butterknife style bolt handle that had both a sharp edge and a high bolt lift, both objectionable to me.
Jeff