scythefwd
Member
Guys,
I see suggestions that such and such powder works well in .308 win. etc. What causes a powder to to perform well in a chambering but not as well in other chamberings (say .308 win vs 30-06)? Please bear in mind that I am still getting my loading gear, so I have -1 year experience on reloading. I do have modern reloading rev. 2 and I have read it cover to cover.
1. Case length and shape? Does this matter and what does it effect? Angle of shoulder matter? Any details are wanted. Is case length a factor when choosing a powder? Is case shape (shoulder, taper, straight wall, etc) a consideration for what type of powder to use?
2. Powder burn rate? Why does the burn rate matter in accuracy? I know it matters for chamber pressure. Why does medium to slower powders perform better out of long actions than short actions (am I correct in this?) ?
3. Volume of powder? What makes a powder that takes 60gr to get 2600 fps more or less accurate than a powder that takes only 45 gr to get 2600 fps in the same rifle? I don't have any examples, but you guys get my point even if the loads aren't exactly doable.
4. Coarseness of powder? I know it matters in black powder, so I would suspect it matters in smokeless powders as well. Does it affect rate of burn only or are there other things to consider?
5. Any other factors you can think of.
And slightly off topic in my own thread , why do some chamberings seem to perform better in general near their max loads and others do better backed off a bit (thinking belted mags vs. other here)?
I see suggestions that such and such powder works well in .308 win. etc. What causes a powder to to perform well in a chambering but not as well in other chamberings (say .308 win vs 30-06)? Please bear in mind that I am still getting my loading gear, so I have -1 year experience on reloading. I do have modern reloading rev. 2 and I have read it cover to cover.
1. Case length and shape? Does this matter and what does it effect? Angle of shoulder matter? Any details are wanted. Is case length a factor when choosing a powder? Is case shape (shoulder, taper, straight wall, etc) a consideration for what type of powder to use?
2. Powder burn rate? Why does the burn rate matter in accuracy? I know it matters for chamber pressure. Why does medium to slower powders perform better out of long actions than short actions (am I correct in this?) ?
3. Volume of powder? What makes a powder that takes 60gr to get 2600 fps more or less accurate than a powder that takes only 45 gr to get 2600 fps in the same rifle? I don't have any examples, but you guys get my point even if the loads aren't exactly doable.
4. Coarseness of powder? I know it matters in black powder, so I would suspect it matters in smokeless powders as well. Does it affect rate of burn only or are there other things to consider?
5. Any other factors you can think of.
And slightly off topic in my own thread , why do some chamberings seem to perform better in general near their max loads and others do better backed off a bit (thinking belted mags vs. other here)?