I have a Rifle Shoppe Harpers ferry I shoot in matches. I just got it a few months ago from a seller here. For 20 years I’ve always used the Dutch Dry lube method and wipe between shots. The Harpers Ferry didn’t disappoint as I’ve won several matches using 80gr 2F Goex, .018 7/1 balistol/water dry patches. When developing this accurate load I had to knock the rear sight to the left a good bit. With hunting season approaching I wanted to test the POI using 100gr of 2F, .018 patches and mink oil lube for easy follow up shots without wiping. Odd thing is that this load shoots more accurate than the dry patch and wiping between shots and I had to knock the sight back exactly dead center. I then dropped the load back down to 80gr and continued with the mink oil and no wiping. Continued to shoot one hole groups at 25 yards. Not sure why the mink oil patches moved the poi back 2 inches to the right compared to the dry patches. I fired about 20 rounds without wiping and never a problem loading. I’ve never had this happen with any of my other rifles that I’ve tried mink oil vs Dutch’s system. I’ve had POI change up and down but never left to right. I’m thinking the radius grooves colerain barrel likes the greasy patches to fill the groves better than my square groove green mountain and Pedersoli barrels. Thoughts?
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