I know we all weigh our bullets, but is it necessary to weigh a sized/trimmed case? I'm breech seating a .32-40CPA, so the bullet is not in contact with the case. I weighed 50 cases today and they were all +/- 3.1 gr of each other.  Just wondering if its something to worry about.  Thanks.

I started BPCR silhouette in 1992 with a 45/70 with brass I had acquired different times and places. With many efforts to improve accuracy I finally weigh sorted all my brass. I marked the cases to identify them. I only shot the same weight lot any one animal and my scores improved a good bit. I was shooting up to 550 yards at the rams and the body is only about 13" tall not counting the legs, head, etc. You need a load shooting better than 2 MOA to get consistent hits on the rams. The turkey at 421 yards is similar to shooting a soccer ball size target at that distance. Weigh sorting helped me.

Be careful.  Two cases that have different weights might not also have different neck thicknesses.

Bill L.

RSW wrote on Mar 21^st, 2022 at 11:41am:


But, but all you need to do is put the crosshairs on the bullseye and pull the trigger. Right? Right?

Sounds more like alchemy. Oh, beg your pardon, that would be what we do when hunched over a lead pot.

Bob
Yeh, it's on last page of that chapter, very small print at the bottom. Most readers miss it 

Precision in all "mechanical" things importantly also helps
reduce the "Mind Games" when shooting-The peace of mind....
Confidence....
beltfed/arnie

And some days, none of the sorting matters.

I shot Hunter Class Benchrest several years.  I did all the things mentioned, and usually shot in the top five.  We had these matches in the Trans Continental Hunter League, nation wide, and the club just submitted the top five scores for nationals.
One time I drove to Denver to shoot the "Firewalker" match.  Gentleman named Eric Ambler (sp?) was a good shooter.  He picked up five pieces of range brass the day before the match.
Four different commercial brand cases, and one LC-something 308.  He trimmed them, turned the case necks, and shot them in the match.  Oh, yeah, he won the 100/200yd aggregate.  The HBR target had six bullseyes.  One shot on each of five bulls, and the bottom left was for spotters; checking wind changes, etc.  He had exactly ONE bullet hole in each bullseye.  So, just one shot on each, including the spotter.
Dave Brennan was editor of Precision Shooting Magazine at the time.  He was speechless.
We used to call that "Being in the zone...".  You simply cannot load and fire fast enough, and conditions, prep, etc, do not change/matter for you.  I had one day like that, some of the competitors said it sounded like I was shooting a semi-auto rifle.  It is magic.  I tied the score at 100 yards, broke the tie on X-count, I tied the score at 200yds, broke the tie on X-count; and tied the 100/200 Grand Aggregate, broke the tie on X-count.  Unfortunately, I never had another magic day since.  Every now and then, I go out to my gun room and admire those trophies on the wall.

But, 99% of the time, the prep is well worth it.  And, yes, those 20 cases were sorted out of 250 DWM 308 match brass and well prepped.

take care,

Rich

PS: if you think it helps, it probably does.  Do some step that cuts .050" off your group size.  Do that five times, and you shoot a 1/4" smaller group and win.

Sorry to hijack the thread, but some days...