30-30 and speed

[Wayne Smith]

Gave one of my Marlin 30-30's to our son to hunt with. He took a box of purchased ammo and my reloads to the range to sight it in and told me, when he returned the brass, that the purchased ammo shot a lot higher than my reloads. I looked at the box, no wonder it did - 150 gr at 2900fps! My load data tops out to about 2300fps - even the super new leverulotion(sp) powder tops out around 2400fps.

That was the first box of ammo I've purchased in years!

How are they doing 2900 fps?

[tigweldit]

Do you know the brand of the 30/30 ammo that was going 2900 fps? That is really fast for a 30/30.

[Drm50]

What brand of ammo is that? Seems like it’s acting the opposite of what it should with that much increase in velocity it should print lower. 2900fps with 150gr bullet is 308/ 30-06 territory.

[earlmck]

There's got to be a mis-print on that cartridge box somewhere. A compressed load of LVR powder might get a 100 grain Speer plinker close to that 2900 fps velocity but there isn't anything that'll take a 150 grain bullet there and keep the gun parts together. We could use some more information: pull a bullet from one of those factory rounds and tell us what you find.

[1006]

Misprint—-yes
Or
Maybe they were 90 grain

[farmbif]

is that 2900fps printed on ammo box? my experience probably somewhat limited compared to others but only thing in a lever gun I ever got up to 2900 fps was a 130 grain bullet in 308 marlin express

[Norske]

What was the bullet weight? That sounds too fast for a 150.

[Wayne Smith]

My apologies - my dyslexia struck. Federal, but 2390, not 2930 fps.

[indian joe]

What brand of ammo is that? Seems like it’s acting the opposite of what it should with that much increase in velocity it should print lower. 2900fps with 150gr bullet is 308/ 30-06 territory.

Why "should" it (higher velocity) print lower? that argument made no sense last time I heard it - still makes none - whats the story here?

[Bazoo]

My 94 prints higher with more velocity. 32 grains of 748 behind a 31141 has the same trajectory as winchester 170 grain factory. 30 grains prints 2" lower, 34 grains prints 2" higher.

[1hole]

Several things can come into play but the most common reason for slower bullets to strike higher is that with more barrel time the muzzle can lift higher during recoil. And it doesn't take much more barrel time for the difference to show up!

[Texas by God]

My apologies - my dyslexia struck. Federal, but 2390, not 2930 fps.
Oh, good. I thought you had found some Remington Accelerators;-)

[dtknowles]

is that 2900fps printed on ammo box? my experience probably somewhat limited compared to others but only thing in a lever gun I ever got up to 2900 fps was a 130 grain bullet in 308 marlin express

Consider Win Mdl 1895 in 30-06

https://en.wikipedia.org/wiki/Winchester_Model_1895

https://www.hornady.com/ammunition/rifle/30-06-springfield-150-gr-sst-superformance#!/

Tim

[earlmck]

Wayne, if that Federal ammo is loaded with LVR it may well be getting close to 2390 fps. And if you are not using LVR your reloads are probably loafing along at least a couple hundred fps slower. That could well make a noticeable difference in impact on the target.

[Drm50]

Why "should" it (higher velocity) print lower? that argument made no sense last time I heard it - still makes none - whats the story here?

The ballistic path of lighter faster bullet will be a shallower arc than the heavier bullet. You have to visualize 3 things: line of bore- path of bullet- line of sight and apply them to a given range. All these being equal the lighter bullet hits lower.

[1006]

You need a trajectory chart with all of the variables accounted for, to know if a lighter bullet will hit higher or lower at a given range.

My understanding-could be off a little:
A pistol will normally hit lower with a lighter bullet due to recoil and “bullet time in barrel” and the velocity at a given range- lighter bullets slow down faster.

Run almost any trajectory calculation on a high powered rifle (223, 308) using the same zero range and you will see the lighter bullet -faster velocity—maintains a higher trajectory for rages out past 600 yards.

[Wayne Smith]

The reloads I gave him were lead and loafing along at about 2000fps.

[Ruts]

I clocked the fed 150s at a little over 2400 with my miroku 20 inch barrel. I was surprised it was so fast, faster than any loads in my books and my hand loads were to book max and only went a little over 2200

[Cosmic_Charlie]

The reloads I gave him were lead and loafing along at about 2000fps.

That is pretty respectable for cast in the 30-30.

[444ttd]

i use 165gr ranch dogs in my 30-40 krag going 1930 fps and it is awesome on deer. my son has the longest cast boolit shot at 173 yards with the krag. i wouldn't worry about it. heck, my 500 linebaugh(tc encore 23" mgm barrel) with a 450gr lfn is going 1235fps and it still kills deer with authority.

[Drm50]

Any rifle or pistol sighted in at given distance with bullet X traveling at velocity X will strike lower when loaded with bullet -X and traveling at +X velocity. The path of bullet (arc ) crosses line of sight twice. Once on rise and one coming down. The recoil issue may add but even with this out of the equation lighter bullet will strike lower.

[Win94ae]

Why "should" it (higher velocity) print lower? that argument made no sense last time I heard it - still makes none - whats the story here?

Do we really want to do this again?

[Win94ae]

That is pretty respectable for cast in the 30-30.

Actually, my Winchester with a 1 in 12 twist, I can just get 2350fps with the 150gr FN.

[Cosmic_Charlie]

Actually, my Winchester with a 1 in 12 twist, I can just get 2350fps with the 150gr FN.

I've got the 30-30 in the rifle case and some 3031 loads to try. Gas checked RD style boolit of #2 alloy. We shall see.