ummmmmmm, what? Do you have any substantiation for that baseless statement? No? OK, well, let's run the numbers, eh?
From Hornady #7, we see that a 30-30 can push a 150gr RN at about 2300fps with an impressive 0.186 BC. Flipping over a few pages, we see the 7.62x39 pushing a 150 gr spitzer at 2200 fps. With a BC of .415.
Plugging those numbers into a ballistic calculator, we find that the 30-30 has the following trajectory when zeroed at 100 yards:
Yards Elevation Velocity
0 -1.5 2300
50 .23 2091
100 0 1893
150 -2.72 1709
And for the 7.62x39:
Yards Elevation Velocity
0 -1.5 2200
50 .22 2107
100 0 2017
150 -2.32 1928
So what's this about the 30-30 having a better trajectory, or more downrange power? Shall we look at 170 grain weight class? Well, there is no published data for 168's in the x39, but I've handloaded them to just under 2100 fps in my 7.63x39 bolt action gun. At this velocity, they're packing the same muzzle *energy* as the 150 grain loads, at perfectly acceptable pressure levels. The 30-30 is pushing it's 170gr FP also at 2100. But, for argument's sake, lets say that the x39 is only doing 2k, 100fps less than the 30-30 (the same difference observed in the 150gr weight class). The 170FP has a stunning .189 BC, while the 168 is right around .450. Math time, kids!
30-30
Yards Elevation Velocity
0 -1.5 2100
50 .46 1904
100 0 1722
150 -3.41 1554
And for the 7.62x39:
Yards Elevation Velocity
0 -1.5 2000
50 .43 1919
100 0 1840
150 -3.05 1764
removed snide remark from here....PGW Steve
HIJACK again
BLAH BLAH BLAH
my LEE manual has 1 load for 30-30 in 170gr at over 2300fps and a couple at over 2200fps, with many more at 2150 and above.
THE BEST 150gr load for 7.62x39 in my lee manual doesn't even reach 2200 fps.
Your book says one thing, mine says another, but 20 grains heavier and over 100fps faster is does indicate a slight power advantage in the 30-30's favor to me.
but your manual is more expensive so it must be right.

I didn't see the snide remark so I won't address it





















































