Hornady 154 gr IB vs 154 gr IL


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DanTheFarmer
January 28, 2012, 08:33 AM
Good Morning,

I'm trying to get a safe, accurate load for my 7mm-08 using 154 grain Hornady Inter-Bond bullets. I'd like to get the speed to 2760 fps
(this works out to just over 2600 ft-lbs of energy which several state fish and game sites list as appropriate for use on moose).

I have some accurate loads for the 154 gr Inter-lok but the 154 gr Inter-Bond is a much longer bullet, leading to deeper seating. Is this likely to be a problem?

Does anybody have good data for the IB bullet? Can I follow the usual rule that applying data from a heavier bullet is safe for the lighter bullet?

I see some compressed loads listed. Once we've reached the state of compression does the deeper seating matter (assuming no case bulging, etc.)?

Anybody have luck with 160, 162, or 175 gr bullets in 7mm-08?

Thanks for any and all help.

Dan

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srsmith
January 28, 2012, 09:09 AM
Hello Dan,

The Hornady Manual will help answer your questions.
For the 7mm-08, the same loading table is used for the four 154 gr bullets including the #2830 SP and the #28309 IB.

You did not specify the load you are using with the Interlock, so it is hard to comment on that.
If is is a load within the range of the Hornady table, then you should be successful with the Interbond.

I would back off about 10% from a known good (safe) load and work up with the new bullet.

Powders giving the best velocity are RL17 and H414 at 2800 fps in a 24 inch barrel.
The velocity depends on barrel length, so your velocity goal of 2760 seems reasonable.
You should be able to get close!

Compression of an appropriate powder is just fine

Be sure the OAL of the cartridge allows it to fit in the magazine and feed properly.
You might need to tweak the OAL for best accuracy.
The OAL used for testing of the Hornady data with the 154gr IB is 2.755 inches.
The 154gr SP was tested at an OAL of 2.800 inches.

Let us know your results !
This forum is all about sharing information.

Please buy the Hornady book and use it... I am an amateur hobbyist and sometimes get it wrong.

Be Safe & Have Fun !

-steve

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