i'm having a superblackhawk fully customised so far I've had hammer and triggeer jeweeled action and trigger job now i'm wondering about bbl the 1-20 is great for my keiths but im interested in running some of the heavy weights 300-330 grn would would these be stable in factory twist or when I get my octagon bbl should I get it in 1-18 or so,would the faster twist still b ok with the llighter boolits