CBA NM GROUP RECORDS

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Last Post 08 August 2018

CBA Member

joeb33050 posted this 13 December 2017

We've now got 20 years, 1998-2017, of CBA national match group records.

The graphs show no trends, groups don't seem to be getting smaller.

Also, the <.5" hurdle seems to be intact, no trend there that I can see.

I can't put the EXCEL files here. Anyone who wants them has but to ask; [email protected],.

If there's anyone who can put EXCEL graphs up here, please do.

Thanks;

joe b.

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CBA Member

Ken Campbell Iowa posted this 13 December 2017

corrected 17dec :: now 6 groups in 2017

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CBA Member

Ken Campbell Iowa posted this 13 December 2017

here is the averages by class ... hmmm . hey look at unrestricted pistol ....

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CBA Member

Ken Campbell Iowa posted this 14 December 2017

here is a graph of groups vs. years ... sorry for size and fuzz .

dk blu is hunter lt blu is unr red is hvy gold is pro green is unpistol purple is pbb

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CBA Member

Ken Campbell Iowa posted this 14 December 2017

looking at the yrs/groups/classes chart ... you might think that when hunter came in, the production groups went up .... did the rifles know about that ... or did the production whizzes go to hunter ?? ... and i assume years with all classes shooting worse were windy maybe rainy ... or sun shining in eyes ?? ...

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CBA Member

RicinYakima posted this 14 December 2017

Yearly is weather/wind/shooter related. I.e. 2002.

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CBA Member

joeb33050 posted this 17 December 2017

jacketed bullets seem more accurate than cast. See the <.5" graph above, and

2017 IBS GROUP NATIONALS

HOLTON GUN AND BOW CLUB, TWIN LAKE MI

8/14/17-8/19/17

5 SHOT, 5 GROUP AGG., 100 YARDS

SPORTER, 75 SHOOTERS, LARGEST AGG., .4706

LIGHT VARMINT, 75 SHOOTERS, LARGEST AGG., .4590

HEAVY VARMINT, 72 SHOOTERS, LARGEST AGG., .3844

joe b.

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CBA Member

Paul Pollard posted this 17 December 2017

The number of 5 shot aggregates at 100 yards less than half inch seems to be 6, not 5, for 2017.

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CBA Member

joeb33050 posted this 17 December 2017

The number of 5 shot aggregates at 100 yards less than half inch seems to be 6, not 5, for 2017.

Correct, Thanks, My mistake. Sent the worksheet to Ken to fix the graph.

joe b.

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CBA Member

Paul Pollard posted this 08 August 2018

It seems that there are 19 years of data missing for the jacketed bullet groups. To satisfy my curiosity, I looked back as far as 2009. By looking at several years and all the shooters in LV 100 class, it looks like IBS group shooters have trouble getting less than 0.200". I would compare that the CBA hurdle of 0.500." I have included a percentage of those getting under 0.200 or 0.500. Maybe both shooting organizations need to dig deeper! As always, we can trim data to suit our bias. IBS vs CBA

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CBA Member

Ken Campbell Iowa posted this 08 August 2018

paul p :: thank you very much . i feel better now.

remember :: treading water is still better than drowning !! ...

looks like at the top end we aren't getting much better ..... but i do think that the CBA efforts can get newbies shooting 2 to 4 inch groups more often than 70 years ago ... and not lead up their barrels while attaining that plinking and hunting success .

how do we track data for the 174th best cast shooters in the nation ?? . maybe they were the 2011 th worst cast shooters and joined the CBA and are now the 174 th best ....

*******************

at the very top level of caster accuracy maybe it is necessary for us here self-ackowledged experts to scream. cuss, and insult all the other experts ... in order to reduce groups by 0.020 inch .... heck, enthusiasm is historically a good thing ..... but at least we can get absolvement through retreating into our more mellow selves and helping the other 99 per cent of our cast shooting fraternity . i like to believe we have done just that.

ken