The only real other circumstance that I can imagine is that it could be a standard Model 70 barrel and action which has a alternative XTR stock. This is often unlikely though...I suspect that it is while you describe, an unmarked XTR. We imagined we might have a two part https://winchestermodel70classicf19752.blogspothub.com/26432925/new-step-by-step-map-for-winchester-model-70-featherweight-for-sale