hamiltonkiler,
Very good question.
The Mar 16 session result with the 77 TMKs is probably the effect of shooter induced variation for this test.
I find that for any session, there is usually one load that is an outlier.
I just don't maintain concentration like I used to.
Actually, the long term results with all powders show that the TMKs have a slight edge (0.006 on average) but there are a lot more groups shot with the 77 TMKs than the SMKs.
Also, note that the 77 grain bullets (combined SMK & TMK) have a better long term average than the 69 grain bullets and that the 69 SMKs and TMKs perform almost identically.
Considering the standard deviations from 0.052 to 0.070, the TMKs are the more consistent bullet. but the
When you look at powder bullet combinations, the results vary some, but the overall results are still pretty darn good.
Note that the best loads with both the 77 SMKs and 77 TMKs with IMR4166 powder are identical and 0.002 better than the best average load 77 SMK using N140 powder. With this small a sample and such similar results, one or possibly two groups that were out of the norm could effect the results.
For the 69 grain bullets, the best load (0.248) is also shared by a 69 TMK and 69 SMK, but the best powder bullet average is with the 69 SMK using N140 powder is 0.006 better than the best TMK average using IMR4166 powder and 0.008 better than a TMK using N140 powder.
The N140 77 grain TMK overall average is the result of the Mar 16 data. The average for 77 TMKs with N140 powder was 0.293 prior to the March 16th session that made drove up the average to 0.302.
Reply With Quote
Bookmarks