Shrinkmd
Member
New toy at the range, and it seems to have worked well, so far.
I was shooting my 1911 gov't model, with some factory and handloads.
Wolf 45acp: (40 round sample, was 50 but somehow they didn't get saved)
High: 808
Low: 755.7
E.S.: 52.3
Ave.: 783.6
S.D.: 12.6
95%: 4.1
200 gr LSWC, WCC 98 Match Cases, Federal LP, 4.6 gr Bullseye, 1.242 (100 rounds)
High: 823.7
Low: 773.3
E.S.: 50.4
Ave.: 803.2
S.D.: 8.5
95%: 1.7
then, some very mixed 45 ACP 230 LRN, Wolf LP, 4.5 Bullseye, 1.265 (100 rounds)
High: 810.2
Low: 731.1
E.S.: 79.1
Ave.: 771.4
S.D.: 13.6
95%: 2.7
and finally, same exact load, but all in CBC (magtech) cases (42 rounds)
High: 787.7
Low: 733.3
E.S.: 54.4
Ave.: 760.7
S.D.: 12.1
95%: 3.9
The amateur scientist in me is impressed by the difference in the federal primers/match cases load. Obviously, I would have to test the federal primers against wolf or other brand to see if the standard deviation difference is the same.
And now I forget my other statistics. How do I do a T test to figure out if the difference in standard deviation or extreme spread between different loadings is actually significant?
Other question is, should I be loading those 200 LSWC a little hotter? Is 800 fps the accepted average velocity? It looks like power factor would be 160,000 so they might be a bit short if you wanted to make 165,000 no? It looks like my 230 hardball loads are well over the line.
Once you start chronographing your loads, do you ever shoot without one again? More junk to bring to the range...
I was shooting my 1911 gov't model, with some factory and handloads.
Wolf 45acp: (40 round sample, was 50 but somehow they didn't get saved)
High: 808
Low: 755.7
E.S.: 52.3
Ave.: 783.6
S.D.: 12.6
95%: 4.1
200 gr LSWC, WCC 98 Match Cases, Federal LP, 4.6 gr Bullseye, 1.242 (100 rounds)
High: 823.7
Low: 773.3
E.S.: 50.4
Ave.: 803.2
S.D.: 8.5
95%: 1.7
then, some very mixed 45 ACP 230 LRN, Wolf LP, 4.5 Bullseye, 1.265 (100 rounds)
High: 810.2
Low: 731.1
E.S.: 79.1
Ave.: 771.4
S.D.: 13.6
95%: 2.7
and finally, same exact load, but all in CBC (magtech) cases (42 rounds)
High: 787.7
Low: 733.3
E.S.: 54.4
Ave.: 760.7
S.D.: 12.1
95%: 3.9
The amateur scientist in me is impressed by the difference in the federal primers/match cases load. Obviously, I would have to test the federal primers against wolf or other brand to see if the standard deviation difference is the same.
And now I forget my other statistics. How do I do a T test to figure out if the difference in standard deviation or extreme spread between different loadings is actually significant?
Other question is, should I be loading those 200 LSWC a little hotter? Is 800 fps the accepted average velocity? It looks like power factor would be 160,000 so they might be a bit short if you wanted to make 165,000 no? It looks like my 230 hardball loads are well over the line.
Once you start chronographing your loads, do you ever shoot without one again? More junk to bring to the range...