[azmick]

Got my scope back from Leupold and got around to mounting it and sighting it in this morning. Got it on paper at about 50 yds and moved to 100 to zero at 1 1/2 high from POA. This barrel is almost boring as it does sub MOA with factory Remington 50 gr. JHPs. Barb will shoot groups of about 1 1/2" at 200 yds with this setup using 52gr. Sierra HPBTs and Varget. Anyway, the question that has me puzzled is; I have a box of Winchester Ballistic Silvertip 55gr. black oxide coated bullets that I figured I'd run a few through the barrel to see how they did. They shoot 2" high and 1" left. I was shooting from a rest and was in no hurry. No called flyers in the bunch and the three shot group was about 1". The large group I can deal with {don't use them on anything significant}, but the high and left has me puzzled. Any thoughts?

 

[c pierce]

Azmik I know this might sound far fetched , but that black oxide tends to foul the barrel. I stay away from it like the plague when shooting bench rest. Take extra time to clean your barrel after using it.

 

[azmick]

Barb has had good luck with the Winchester Supreme bullets in the barrel but, I do the cleaning. It cleans up easy enough {a little more work buy that's OK}. As far as far fetched, moly disulphide {sp?] has a stigma attached to it and I have run those bullets through my 7-08 barrel, But with the same cleaning diligence the black oxide gets. From what I gather, the problem comes from moisture getting under the coating that comes off and causing corrosion