Hey guys, quick question on reloading data. I have the current Lyman and Speer reloading mannuals. When selecting a round formula do I have to use the exact componets in the list or can I change things alittle.
http://www.alliantpowder.com/reloaders/RecipeDetail.aspx?title=Pistols%20and%20Revolvers>ypeid=1&weight=180&shellid=1022&bulletid=65
Take this page from Alliant on reloading my 40S&W with a 180JHP. I can see the primer and the powder being very important but does it matter if I use a JHP or a FMJ etc. As long as its 180 shouldnt I see about the same performance? My Speer manual even quotes a specific bullet part number. I guess the basic question is, what componets matter and which ones dont?
Thanks
http://www.alliantpowder.com/reloaders/RecipeDetail.aspx?title=Pistols%20and%20Revolvers>ypeid=1&weight=180&shellid=1022&bulletid=65
Take this page from Alliant on reloading my 40S&W with a 180JHP. I can see the primer and the powder being very important but does it matter if I use a JHP or a FMJ etc. As long as its 180 shouldnt I see about the same performance? My Speer manual even quotes a specific bullet part number. I guess the basic question is, what componets matter and which ones dont?
Thanks