Re: Some guidance so I don't blow myself up...
Welcome to the addiction zone. Here you will find all the answers or at least most of the answers that you seek. My first suggestion is to purchase a good manual. My suggestion would be the Lee manual or the Lyman. Both offer good advice and instruction in the early pages. As with any loading you need to take great care in powder safety and handling. Make sure you always start your loads 1 to 2 grains below max to make sure that you work up to your rifles max in pressure. Pressure signs include, ejector marks, caved primers, and a sticky bolt lift.
In truth, your 30-06 is a good rifle to get you out to 800yrds easy. Popular bullet to use for taking heavy game at long distance in your rifle would be 175 to 190 grain bullet. The best design for this type of shooting is a boat tail type bullet. Sierra, Berger, and Nosler all have excellent bullets for this application. Hornady offers the Boat Tail Hollow Point as well as the A-Max that will give you the ballistics necessary for long kills. The 06 has enough heft to get it to where you want it to go. As far as load is concerned, you have to start with something and go with it. Each rifle is different, and will allow different levels of pressure. One rifle might shoot a load of Hogdon's H4350 @55 grains of powder and another rifle may not. In theory you want to use a slower burning powder for the heavier bullets.
Each rifle is different. I know some others here can give you powder charges for your 06. As far as the .308 nomenclature. That is the caliber diameter for 30 caliber rifles. It means the bullet should be .308" of an inch in diameter. A 6mm bullet is the same as a .243 Winchester because it is the same diameter.
Other components to consider is primers. Each primer has a specific purpose. There is large rifle which is the CCBR2, CCI 200, Federal 210, Federal 210m <never find that one right now), Remington 7 1/2, and Winchester WLR, and Wolf Large Rifle. This is the primer size you will need to use for your 30-06. Some guys may offer a suggestion to use a magnum primer which can be used, just increases cases pressure. Believe it or not, you'll probably find that your 300WSM will shoot better using a large rifle primer instead of a magnum primer.
When you get to loading the 300, than I can help with charges and bullet selection.
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Last edited by liltank; 11-01-2009 at 02:56 PM.