John on the shotgun sports rules.  It's a bit different in that all are run in squads. If your squad is on the line everybody keeps to routine and pace. It's a gentleman’s sport and most are.  At times you see someone who is not that way, not often. Our club offhand single shot rifle matches are also run in squads shoot in turn. 99 % of the competitors are very polite and do all they can to give the other competitors a fair chance at a good score.

Boats

Better accuracy is always better? Is it not?

I understand the argument for fixed ammo, but breech seating at the bench is so terribly easy a caveman could do it. Plus it's fun! Going from 1/2 moa potential to 1 moa potential is not for me, need all the help I can get.

John

6 inch group at 200? Not me pardner!!!!

If I ever start to feel rushed maybe I'd consider it. I have shot fixed ammo offhand, And honestly it made no difference, I just spend more time messing about. Best I ever shot was breech seating a low wall 32. Not that I shot great but was good for me.

John

It's a compromise for me.  I breech seat but use 100 cases that I have already primed.  Just throw the charge in and I'm set.  Saves a bit of time.

Regards, Joe

westerner wrote on Mar 7^th, 2014 at 11:30pm:


Chris just ran the numbers to calculate what the expected group size would be if you added a bit of new variation to the known variation - resulting in an expected group size of 3.041 up from 3.  As he said, not a huge increase.

Chris KNOWS his statistics.  JoeB flaunts what he thinks he knows.

Ok, your going to have to school me on this......... I don't understand how a group that averages 3" as compared to another bunch of groups that average 4" (approx. 1/2 min difference) and be made to expect to be a .041 difference? Unless statistics favor the OH shooter by a lot more than a bench shooter.

Frank

frnkeore wrote on Mar 8^th, 2014 at 5:51pm:


Variation occurs in all directions.  One doesn't just add up all the variations - because each source of variation will add or subtract from the each of the others.  It takes a semester or so to get familiar with each of the calculations - understanding of them comes at the end when it all fits together.  Not something that can be done in a paragraph or two.

FWIW for years I've been using the shareware Group Size Calculator by Ralph Wilson. You scan in a ruler and adjust your scanner so the results read correctly. Then you scan in a target as a *.BMP file and read it. You right-click the mouse on the target center, then click on each shot. It will calculate the mean radius as well as the group size. Plus you can exclude fliers to see what you .... uhhhh, could have shot .

Others use the OnTarget program, but I've been using GSC for years and don't see the need to change. Even the CMP has a free app for your schmart-type phone to take a picture of the target and it gives the group size.