Reloading Manuals ??

[specweldtom]

I agree with all the replies. I also think that because of these variables, most loading manuals come with about a 5,000 lb lawyer installed.

Tom

[g0rd0]

as a general rule any given group of the same weight bullets will develop differant preasures.
Why?
The berring surface, a bullet that has greatter contact with the barrel has to greate more preasure.

[BrentM]

1+ on that. I had this happen with the bearing surface difference with the exact same bullets. They were a screwed up lot with .030 differences. I had to drop down in powder and it yielded slower velocity as well.

[Nimrodmar10]

I'm not loyal to any one reloading manual. I've got most of them. That being said, I usually start with the manual that matches the bullet brand I'm loading. Then I look to see what primer they're using with the load. If those two both match I'll use their data. All companies have access to the same powder and primers but the bullets are different.