Some ramblings about mistakes and things I've made/learned over the years.
When I was a young family man, I needed money more than nice factory bullets. Making lead bullets is definately for the budget consious. Well out here in hot as hell Phoenix Az, you better not store the bullets pointing up in your truck with all that wax lube on a lead bullet. The wax melted, and ran down into the powder. A squid load was the result. The sympton was a bullet stuck in my barrel.
I'm a little more flush today, and I have about five loading manuals plus the small factory loading manuals. Plus, I use the loading data base that Hogdon, Imr, and Winchester have online:
http://data.hodgdon.com/main_menu.asp
I'm always looking at all the information I can find.
Today I have three electronic scales and one manual scale. This has caused some problems for me. Evan good scales will vary +- .2 grains. Sometimes this will cause a load to change or not work. One scale is a little high and the other is a little lower and wala you have a .4 gn variation.
I've invested into calibration weights. Sometimes it isn't good to have to much money. I've invested into calibration weights
As a general rule I've found extruded powders to be more tolerant of temp variation than ball powders. However, I've personally blew the primers out of some 308 loads shooting on a 117 degree day using an extruded powder the manufacturer claims to be temperature tolerant. If I'm working up loads in the summertime for hunting season, I'll keep my bullets stored in a cooler. I've been laughed at for this but it works. I don't do this if I want to test bullets under hot conditions.
Out here a car can get to 140 degrees in the cabin area with the windows closed. I use to keep some defensive ammo and a loaded gun in the cabin of a car. I still do, but I cycle it through every year. I've had ammo go bad after several summers. You would hear the hammer hit and a second later the gun would go bang.
Also as a general rule, I've found ball powders to be more load sensitive than extruded powders. In other words, a .5 powder charge change with ball powders can cause my groups size to change quickly and with greater size variation.
Beware of droppping extruded powders into anything smaller than 25/06 on a progressive. I have a 650 Dillon, and I have had H4831SC hang up in the powder bar because it clogged on the neck of a 243. It drops fine into a 2506. I've succesfully dropped varget into 223 with some reworking of my procedures on the 650. Never drop lincoln log IMR powders through a progressive. Just beware of this.
I have good very good lighting above my loading bench so my old eyes can actually look into the case and see the powder level when applicapble; plus, the 650 has a powder check system I use when I cannot physically see the powder level.
Many times I still charge all cases in a single step and will look down into the cases looking for a light or heavy load.
Beware of multi reloaded brass on semi's. Semi's tend to pull the brass apart internally just above the web. I've seen this happen after three shots on Federal brass in an M1A. As far as civilian brass, Federal wears out the quickest and they all will do this within 5 loadings. Military brass run through a machine gun is absolute worst for doing this. If you don't know what I'm talking about, find someone who shoots DCM High Power matches and have him show you.
I've seen it mentioned to only keep one type of powder on the bench. This also needs to be the rule with bullets. Don't shove a 180 gn bullet on a 110 gn powder charge. Also don't put a pistol or magnum primer on a charge designed for std rifle loads. Only keep one type of primer on the loading bench.
I rarely use magnum primers except on very large cases with ball powders. However, I'm about to start loading a 375 H&H. I'll be looking to see what they say in my loading manuals.
A good baseline is to shoot factory ammo through a chronograph. If your loads exceed the factory FPS, STOP SHOOTING.
A chronograph is a great tool. Buy one and get to know how to use it. I did.
If you cannot get a gun to shoot. Shoot match grade sierra. If they shoot good it isn't the gun. If you still cannot fing a load to shoot well, send the gun to a competent gunsmith. Check the sight mounts first, scope second, bedding third, etc, etc.
I started reloading for the savings. Today, I reload for the accuarcy.
I've been rambing like Carl Jung so I'll call it quits.
Aznative