Brass sorting and Powder lots

[FOTIS]

OK Guys 2 part question.

Brass sorting:

If so have you conducted any test to see if that really makes a difference? Just to be clear I am not referring to Benchrest shooting. Just hunting accuracy. I mean if it can be the difference between 1/2" group and 1" group it does make a difference to me but I find it very tedious. I am talking about big magnum hunting cartridges, not 222, 223 etc.
Some of my brass (338-378, 378, 416, all WBY) can have a difference of 3-4 grains at those sizes.
If I sorted with a difference of 1 to 2 grains I would wind up of 10 lots of 8-10 brass each. Would it be worth it?



Powder lots:

Has anybody worked up an awesome load and then run out of that powder? Then you go and buy another pound, but it's a different Lot number. Have you seen any huge differences between the initial load and the load with a new powder lot? How do you deal with the situation?
My question is directed at RL 26. I am opening up a new "jug" and I have 4 magnum rifles that use that powder.

 

[RL338]

With the 378 based case I don’t worry about a few grain spread. I do focus on the H2O capacity of the case. I do keep all my brass in separated ammo boxes by lots.
I do know that my Norma stamped brass is heavier than the Wby stamped. Another thing with Wby brass is the age of it. The old brass is by far lighter , it can be tell by the flat bottom. You don’t want to mix any of those in.
Old

New

With Alliant powders RL-17 is the best for lot to lot I came across. It never needed to be adjusted.
RL-26 has been good for lot to lot with a slight variant in velocity.

 

[FOTIS]

Thank you Rick. That is what I am talking about!
295 gr vs 318 gr at 5 bucks a case! I know different lots but WTH? It is so frustrating!
I wish Alpha, Lapua or ADG made the big Weatherby brass.

 

[grry10]

In my 7mm Remington Mag I've never had a major issue with either when it comes to hunting accuracy. I went to the range one day with a mixed lot of Remington, Winchester and Federal cases loaded with the same power charge, same WLRM primers, and same bullets. The mixed lot produced very acceptable hunting groups. My sons Remington 760 in 35 Whelen shoots the same point of aim as the day he first sighted it in and powder and primer lots have changed several times over the years.