You guys know me. I am always up for a good conversation!! Anyway i have been invited to a prairie dog hunt this coming spring. I have never been before and i am pretty excitted to say the least. I have a stiller predator action and a tooley MBR that i can do something with, and i am think i need the ultimate prairie dog rifle. I am not a huge 20cal fan, but i did have a 204 that shot pretty good. Anyway i am thinking a 20BR might be just the ticket for the visual pleasure most folks look for. I found a barrel that pretty affordable but it a 12twist. I have read that most folks want a 9 twist so they can shoot 50gr berger. I am thinking i would like to shoot the 40gr v-max or 39gr sierra. will the shilen 12 twist do the job at 20br speeds? Also i need to mention that the barrel is going to be chrome moly. I will try to lap this barrel myself as i feel i can do this once i gain the knowledge to do so. Cant be that hard. I may be wrong in my way of thinking, but i dont want to burn up a 300$ krieger blank hunting prairie dogs. the shilen is only 130 bucks. I read an article from Mr Green ( bartlein barrels) that there is nothing wrong with Chrome moly it just takes a bit longer to brake in and it may copper a bit more. Accuracy will not be effected by going with chrome moly if the barrel is made right of course. So will the 12 twist be ok for 40gr bullets? What about dies? I can use my redding bushing die for FL sizing, but i dont know what route to go with for a seat die. I will also have to buy a reamer. Anyone have any certain reamer they would recommend for the 40gr bullets. any info is appreciated. I am not 100% sold on this idea as of yet. if i dont go 20cal it will be a 22BR. I already have one of those though. My other 22BR is a super accurate barrel and i hate to burn it up, so i really just dont know what route to take. the 20BR seams pretty interesting. Thanks lee