cbass said:
Jimbo357mag said:
If you are trying to duplicate the factory POI [...] If you are going for group size you should go up in 0.5 grain increments or smaller.
I was not necessarily looking to have the same POI--I was using that as a reference to make sure that I was on paper.
I am looking for group size. It looks like 27 and 28 were my best so do I go 27.5 and 28.5 and everything in between? Or do I really need to be at 100 yards to "prove" the load?
Here's my random thoughts;
T'were it me, I'd load up a few more 28 grainers and (10) with 28.5, scrub out my barrel real good beteen test, fire a couple of "fouling shots", and go from there.
IMR3031 has been one of the "go to" powders for a 30-30 for years. That said though, don't discount what Jimbo said, because Varget is a very good powder also.
Some 30-30's prefer a 170 Grn bullet, some prefer a 150, and often there aint no ryme or reason as to why.
Yes, at some point you'll need to retest at longer distances.Just how far that distance is though, will depend on how well you can use your present sighting arrangement, and where it is that the bullet becomes subsonic.
At some point past 100 yds, you will likely find a measurable increase in "precision" by switching to a true "match" primer.
FWIW, almost every levergun that I've had shot better after I glass-bedded the buttstock to the reciever. I'm perty-convinced that doing so also helps to prevent the cracks that are often seen in that area on high-milage guns from forming.
Hope this helps.
DGW
