Originally Posted by
sauer06
Guys this may seem like an uneducated question and maybe it is but why is it some rifle powders work well in some cals and others do not? I shoot alot of 30 cal at 2600-2900 fps and 243 at the same speeds and have used alot of different powders and some have worked well and others not so well. what works better with the above listed, slow or fast burning powders and which are slow and which are fast burning powders?
Thx in advance for all the replays.
The burn chart is just for relative comparasons every powder burns differently in diferent cases. The 30-06 will use faster powders then the tighly necked 243win while a strait case like a 45-70 needs very fast powders. Only use listed powders from reloading manuals.
4350 medium/slow burn rate type powders works great in a 30-06 while the 243win should work with a slightly slower powder. Just for example the 35whelen likes IMR4320, the 30-06 the IMR4350, and the 270win IMR4831. Same case with different neck diameters.