Just starting a new varmint rifle build. Looking to end up with a shorter package than my other rifles. I would be curious if anyone can provide insight into what length becomes too short? I would like to go with a shorter, but heavier barrel but was concerned that beyond a certain threshold it might be defeating the purpose of having the bigger case, if greater length is required to realize the benefit of it. Planning on shooting bullets in the 80gr class with an 8 twist. Thank you in advance.