Re-testing the 199 gr. Loverider with the 32.0 gr. N135 charge, which shot a 0.80" group yesterday. The group on the top left is yesterday's group, while the other three groups on the top row were shot today.
The 198 gr. target is photoshopped into the lower half of the image so you can compare targets without having to look back through old posts.
-- the 199 was less accurate than the 198 with the 31.0 gr. charge
-- but when the charge was tweaked to 32.0 gr., then the 199 was equally accurate.
-- the 198 always put fouling shots into the main group, but the 199 often spit fouling shots out of the main group.
-- you could say that the overall performance was equal. The 199 was definitely not superior to the 198.
Yesterday's loads were seated 2.704", which I thought at the time was Jam minus 10. However, I had never actually measured the jam point with the 199, instead I just assumed that it was the same 2.714" as the 198, since they were nose sized the same. But then I measured the jam with three different bullets and got 2.678", 2.699", and 2.727", for an average of 2.701". Which is correct? They are all correct! The variation is due to how hard you push the bullet into the rifling. My habit is to push with "moderate thumb pressure," but since my thumb is not a calibrated instrument, sometimes I probably push harder than other times.
An alternative method would be to seat a bullet long in a dummy case, then let it "self-seat" as the dummy is chambered. However then the results would vary with neck tension, hence I went with the "thumb pressure" method.
Well if you believe that the Jam point is 2.701", then yesterday's loads at 2.704" were Jam plus 3, not Jam minus 10 as I said at the time. Today's loads were seated 2.694" making them Jam minus 7. At any rate, it didn't seem to change the accuracy. In general I've gotten best accuracy either right at Jam or 5 to 10 away from Jam.
EDIT: I forgot to mention that I had JB'd the barrel prior to today's session. My thinking was that every time I have JB'd this barrel, the next group was a good group. And that was true today with the 9 in 0.85" group. Maybe I should JB once a day?