Case (cite)
State v. Riley, 568 B.W.2d 518 (Minn. 1997)
“Papke did not testify conclusively that the shells could not have come from any other gun except the Smith & Wesson, and therefore, the Spencer rule is inapplicable here. Cf., State v. Bloom, 516 N.W.2d 159, 168 (Minn.1994) (noting that some courts approve of such conclusive testimony in the fingerprint context). Moreover, it was not error for the trial court to permit Papke to state his opinion to a “reasonable degree of scientific certainty.” We have approved of this terminology in the presentation of qualitative testimony such as offered here. See id. (expressly sanctioning the use of “reasonable scientific certainty” in the context of DNA evidence). Therefore, it was proper for Papke to state his opinion that to a “reasonable degree of scientific certainty,” the Smith & Wesson handgun was the source of the collected shell casings.”