One of the most frequently heard questions we hear at Creedmoor Sports is,
“Should I neck size or full-length size?” There is no proven right or wrong answer or at least one that has documented statistically valid data backing it up. You’ll often see guys showing results after shooting only 4 or 5 groups. This usually does not present enough data and is not a blind study, meaning the tester can probably tell which is which from bolt closure and can subconsciously influence the results. Regardless, I’ll be glad to give you my thoughts on the matter.
Read full article here: https://creedmoorinfozone.com/full-length-versus-neck-sizing/