Interlock RN in 308win

cyclops666

cyclops666

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Hornady interlock 150grain round nose typically loaded into 30-30 cases, I've got a box and would like to use them up in the 308 rifle. I understand they're designed to expand at 30-30 velocities but how much speed is too much?
I've read opinions that they could explode on impact at higher velocities, does anyone know the max I can push these while remaining effective for deer/bear?
 
Hornady 150 grain round nose #3035 1800 to 2500 muzzle velocity range FPS. designed for medium size game from Hornady manual. From the front of the manual on Hornady bullets and their optimal velocity range.

NOTE, the Hornady manual for the .308 Winchester has 150-155 bullet load data with 10 bullets listed on that page with the 150 grain round nose #3035, and the load data goes up to 2800 fps.
The .307 Winchester list the 150 grain round nose #3035 up to 2650 fps.
The .308 Marlin Express lists the 150 grain round nose #3035 up to 2700 fps.
The 30-06 lists the 150 grain round nose #3035 up to 3000 fps.

All information above from the 10th edition Hornady reloading manual dated 2016

In my 1943 Remington 03-A3 30-06 I used the Hornady 170 grain flat nose 30-30 bullet at approximately 2600-2700 fps with good results on deer. And the bullet held together and did not come apart. The interlock function on the bullet holds it together like a Nosler partition, even when recovered from the dirt berm at the range.
 
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I shot some at 1400fps out of a 30-06 into water and all peeled right up to the canelure and had full core and jacket separation. Everything else we tried held up and was a perfect mushroom. Kill a deer I’m sure but wasn’t impressed by them. Perhaps they switched to thinner jackets?
150gr RN over 14 grains of trailboss
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I don't think you are going to come close to breaking those up in a sporter barrel 308. I have pushed the 7mm ones to well over 3000. The 303 British ones I never did figure the velocity but I was edging up on what a 308 would do with 4895 and 3031.
 
RRH.01 said:
I shot some at 1400fps out of a 30-06 into water and all peeled right up to the canelure and had full core and jacket separation. Everything else we tried held up and was a perfect mushroom. Kill a deer I’m sure but wasn’t impressed by them. Perhaps they switched to thinner jackets?
150gr RN over 14 grains of trailboss.
Click to expand...

That's why the bullets came apart, you have hard water from all the lead you put in it. :evil:
 
oneadam12 said:
I don't think you are going to come close to breaking those up in a sporter barrel 308. I have pushed the 7mm ones to well over 3000. The 303 British ones I never did figure the velocity but I was edging up on what a 308 would do with 4895 and 3031.
Click to expand...

I'm not sure how the sporter bbl fits into this equation. The issue is the increased velocity over for what they were designed for.

To compare these bullets to other calibers in different chamberings is apples and oranges. Many times those bullets are made to work properly at specific velocity.
 
i have used them in the 303 british ruger #1, i was hoping they would plink or shoot straight at least, they kind of didnt.... too small in the 312+ barrel.... expected.

i think i loaded some in the 30-06 an shot a sambar with it but i cant remember what happened, from memory ti was a bit long for the application an i hit it a little back, required a follow up walk an shot....

cant remember off top of head how 'fast' they were goin.
 
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