Case weight and group size

First topic message reminder :

Sorted my range pickup FC brass and found two batches of weights 57-58 grains and 62 to 63 grains.

In precision rifle reloading, we weight sort our brass because heavier brass means more brass and less case volume.  That usually means more pressure and affect POI.  We of course shoot long distance 300-1000 yards where a slower round would have more drop and this is why POI changes.

The question is with pistol where we are shooting short distances i.e. 25-50 yards. does brass weight/case volume/pressure/slight MV differences affect group size?  I know the theoretical answer is YES, but has any one tested this?  FWIW, I know we should always use the same headstamp brass but is that because of the differences in wall thickness (which affects crimp) or is it both?

CR10X wrote:Since my name was dropped into this thread without any involvement or comments from me, I feel the need to respond.  Otherwise, y'all continue on you merry way.....

To "Joe Morgan":

I respectfully disagree that I ever said there was "one way" to approach shooting.  As a matter of fact there are may ways to get there.  However, I have said that obsessing over minutiae of cases, bullets, powder, equipment, etc., is not the best path to improving shooting skills or abilities.  I have said, get something that shoots well, find something to shoot in it that works well with acceptable accuracy, and keep training.  And I have said, after you get to the acceptable limits of loads and equipment, the only thing that really matters looks at you in the mirror every morning when you brush his teeth. 

...

Cecil
HM, DP#1232, DR#9, D22#76, P100X15, MayleighX2
Orton, Wyman & Gold Cup Trophies

Not really, but I'm not going to go through your subjective treatment of this subject over the course of many years. It would be best, if this is in fact your current advice, that you stay over in the Fundamentals forum. You have nothing to contribute to reloading that doesn't come out as the usual, "oh, well, if you are worrying about reloading you'll never be a good shooter," tripe, which, I think you'd agree, is your position, yes?

You, Jon, and others, really ought to back out of the Reloading forum because you use it as a perch to snipe down on new shooters who just want to work on reloading, which, according to your post above, is completely pointless. Except that it isn't; if it was, then the AMU wouldn't feel the need to test ammo- so there is something to it. 

Of course, many folks can't take advantage of it, but that's not quite the point, is it? You seem to enjoy pissing on folks fun in this particular area, even when the participant here knows full well that it isn't the bullets that will make an X. What you never hear from your camp is when to switch from caring about reloads because the equipment is holding you back, but that's because you don't have much of an answer or piece of advice there.

I stand by my statements, lots of gatekeeping here- just do your thing and keep calling/hosting matches. It's what you are good at, now.

We have a Reloading Forum?

Mr. Morgan, Sir!
What are the objectives of your posts?  I read through all of them, and yet to find any single bit of information, that I, a novice BE shooter, can take to the bank. 

Respectfully,
AP

Dang, what did I do now? I didn't think I even posted in this thread before now, and here I am with tire tracks on my back.

jlow/OP, I have shot a fair bit of high power rifle also. Coming to rifle from pistol, I used to get frustrated by the ENDLESS discussions on nationalmatch.us, etc., about annealing, jump, throat wear, JB-ing bores, yada yada yada, and very little discussion about technique, and even less about mental management.

I finally realized that there are (at least) two different hobbies in high power rifle and bullseye - shooting, and reloading.

More importantly, I realized that I really don't enjoy the reloading hobby, and it's not a requirement to be good at it in order to enjoy the shooting hobby. And vice versa. And many enjoy both.

You do you. If you want to weigh .45 cases, enjoy, and thanks for sharing your findings. Whatever keeps you on the firing line is cool by me.

Joe Morgan wrote:just do your thing and keep calling/hosting matches.

I agree with this wholeheartedly.

Joe "Sharpshooter" Morgan:

Hope you eventually find something you're good at as well.  

CR

john bickar wrote:
I finally realized that there are (at least) two different hobbies in high power rifle and bullseye - shooting, and reloading.

More importantly, I realized that I really don't enjoy the reloading hobby, and it's not a requirement to be good at it in order to enjoy the shooting hobby. And vice versa. And many enjoy both.

I can name at least one more - that would be gun smithing.  As such it would take 60000 of hours of one's life in order to develop skills in all three areas leading to noticeable results.  However this thread is morphing into something other then intended by OP.  As such if there is an interest to continue, I think, it should be moved to different area on this forum.

AP

CR10X wrote:Joe "Sharpshooter" Morgan:

Hope you eventually find something you're good at as well.  

CR

Feel the burn . Seems like the newer/ lower level shooters would have a bit more respect for the proven successful shooters, call me crazy.

PhotoEscape wrote:I can name at least one more - that would be gun smithing.

Fair point; the reason that I did not mention that hobby is...well, did you not notice that I had JB Weld on my service pistol rear sight and pink nail polish on my .22 dot mount screws?

Hm............ if you are talking about same thing I am thinking off, of course not, - paper towels were primary objective. 
AP