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Question, measuring a group?

I see many people post they shoot a .1 of an inch group, what I can't figure out is How? if your shooting lets just say a .264 bullet I measured .214 hole today, I have heard of guys saying they deduct the size of the bullet from group , well depending on paper your useing the actual hole can be much smaller, I was under the impression that iN group shooting, where they are shooting 5 shot groups with mostly a 6mm or .243 size bullet and they have a little plastic thing that measures from center to center of longest spread, I went through several of my NBRSA mag, and guys I see month after month at .22 or .23 or .24 I did see one at .189, I can get that out of a 6ppc but when there shooting a 308 or 6.5 even .243 of any kind even ppc I see .1 day after in here can there be that many winners or they should be competeing or may be guys who fish, when the fish isn't enough to feed one they fed 5 on it. jUST CURIOUS HOW MANY .1, 5 SHOT NOT SOME 3 SHOT they don't count, GROUPS HAS ANYONE SHOT, I was looking for a national event to see what the winners shot but haven't found it yet.
 
Have a play with this software - http://www.6mmbr.com/ontargetsoftware.html

I find it helpful for measuring group sizes in MOA as I test in different locations at different ranges. Most of my competition groups come in about the 1 MOA level or worse.

Regards

JCS
 

Attachments

Thanks for link to software, I also convert my groups to MOA, I made a calculator in excel, I keep it on my phone as well as my computer.
 
I also use the "On Target Precision Calculator" program/software. It has a free 15 day trial and if you like it their website says it is $11.99 to purchase.

By the way Mr. fm1947, did you know that FM 1947 is a highway in the Hillsboro, TX area south of the Dallas/Ft. Worth Metroplex. In Texas FM stands for Farm to Market roads or as many other states call them county roads.

www.ontargetshooting.com
 
fm1947 said:
I see many people post they shoot a .1 of an inch group, what I can't figure out is How? if your shooting lets just say a .264 bullet I measured .214 hole today, I have heard of guys saying they deduct the size of the bullet from group , well depending on paper your useing the actual hole can be much smaller, I was under the impression that iN group shooting, where they are shooting 5 shot groups with mostly a 6mm or .243 size bullet and they have a little plastic thing that measures from center to center of longest spread, I went through several of my NBRSA mag, and guys I see month after month at .22 or .23 or .24 I did see one at .189, I can get that out of a 6ppc but when there shooting a 308 or 6.5 even .243 of any kind even ppc I see .1 day after in here can there be that many winners or they should be competeing or may be guys who fish, when the fish isn't enough to feed one they fed 5 on it. jUST CURIOUS HOW MANY .1, 5 SHOT NOT SOME 3 SHOT they don't count, GROUPS HAS ANYONE SHOT, I was looking for a national event to see what the winners shot but haven't found it yet.

Lots of internet groups being shot...

Unless its measured with an official scoring reticle I take it with a grain of salt. I've seen groups posted where they claim it's a .1 yet you can see at least one caliber diameter spread center to center.
 
fm1947, one of the reasons that you do not see group sizes posted is because there is an aggregate score posted. Sometimes the small group is posted but individual groups are seldom listed in the match report published in the magazine. More often than not, the shooter who shoots the smallest group, does not win the match. It is the Agg. that determines the overall winner. Or, as a good friend and HOF member says. "You don't need to shoot really small ones, just no really big ones".
 
DocEd said:
More often than not, the shooter who shoots the smallest group, does not win the match.

The small group winner always wins the match in which the small group was shot. S/he may not win the range agg, grand agg, or multi-gun, but a match is just one group.
 
DocEd said:
fm1947, one of the reasons that you do not see group sizes posted is because there is an aggregate score posted. Sometimes the small group is posted but individual groups are seldom listed in the match report published in the magazine. More often than not, the shooter who shoots the smallest group, does not win the match. It is the Agg. that determines the overall winner. Or, as a good friend and HOF member says. "You don't need to shoot really small ones, just no really big ones".

He can go to Benchrest.com. do a search for "Harrison" in the Competition Benchrest section and find the match result I post. I always include an attachment (PDF) that shows group sizes shot per match/per shooter.
 
snakepit, good to know there are roads with my initials and the year i was born, I told my wife if I forget my initials and year , it's over , just find me a place in the shade.

aj300mag, thanks

DocEd and Toby, I understand that, thanks, I wanted to see how many would come on to my post claiming they shoot .1s , all the time as we see so often in many post, I'm not saying there arn't those who can, there are some but a .1 anyting are far and few between, and target has a bit to do with it some paper with a 243 bullet may show a hole of .215 another may show .200, many variables. My hat's off to these group shooters who consistantly agg 1/4 MOA or less at 100 and 200 yards.
 
aj, rarely does the NBRSA magazine publish match reports a thorough as your report. Only in the larger matches do they even mention small group of each match. I didn't mention individual matches in my first post because I thought the OP was asking about results he sees in the magazine.
 
fm1947 said:
This guy is a shooter DARDAS, MATT, not to forget about 2nd and 3rd

Yup! This is Matt's second season in Benchrest. Matt is a distinguished smallbore shooter. That is a very good group of shooters! Joe Hynes has finished in the top twenty at the Super Shoot, did very well at the Eastern Regionals this past weekend. My friend Jim Hutchison has won 75% of the Harrison matches going back 15+ years and has a few Hall of Fame points. Lee Hachigan will be representing the U.S. at the Benchrest World Championship held in Australia next month. You see their scores, and then read about .1 groups... all day long. YMMV. :grin:
 

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