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Anyone ever reverse engineered HSM Trophy Gold ammo?

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Unread 06-21-2012, 02:37 PM
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Join Date: Apr 2010
Location: Allen, TX
Posts: 2,608
Re: Anyone ever reverse engineered HSM Trophy Gold ammo?

What's with folks all of a sudden wanting to duplicate mediocrite?

It's a waste of time.

You know they use 168 Bergers.

You can measure the OAL as a starting point. But, you'll likely find something better when you fine tune your seating depth.

You can reload the once fired brass or get some Norma brass which will be even better.

Pick a good powder/primer such as H4831SC with Fed GM215M primers.

Get a reloading manual or go to Hodgdon's website. And, do a proper load workup. My guess is that you'll find a better load within the first 20 shots.

The second 20 shots will confirm. And, you can improve on that down the road.

-- richard
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Unread 02-28-2013, 06:49 AM
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Join Date: Dec 2010
Location: Central Florida
Posts: 153
Re: Anyone ever reverse engineered HSM Trophy Gold ammo?

Originally Posted by Aldon View Post
If I were to attempt reverse engineering, I would run factory ammo through a chronometer.

Then I would take one and weigh the powder and then run through the data in QL and see if any of the listed powders looked close.

If more than one does, then I would compare visually to see if one stood out as matching the velocity and weight calculation of QL as well as looked visually similar.

In the end, you would still have to start low and work up to confirm your observations though.....

In my view a lot more trouble than choosing a powder that is available that meets your criteria and simply working up to accuracy node and calling it done.

I tend to try and use those powders that have decent density and are known to be temperature tolerant.
This is very good advice!
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Unread 10-12-2015, 04:50 PM
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Join Date: Sep 2014
Posts: 32
Re: Anyone ever reverse engineered HSM Trophy Gold ammo?

hi guys
I took a 7mm rem mag hsm trophy gold apart and they only use 61.2 grs of powder. they advertise as 3020 fps. is that even possible, I'm using 70 grs of h1000 and only getting around 2780.....
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Unread 10-12-2015, 10:52 PM
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Join Date: Feb 2008
Location: Utah
Posts: 524
Re: Anyone ever reverse engineered HSM Trophy Gold ammo?

Plus 1 on what Aldon is saying. I have done the same and gotten close but still had to make some changes. Since then I just start out with some powder usually a temp stable hodgdons and work up a load depending one the caliber for which powder choice I use. Also I think one of the big advertises HSM was promoting in the past was that there loads were supposed to be loaded with temp stable powder. So it may be something of the hodgdons line but there own mix, or blend. If it was me I would use some type of temp stable powder any way..Retumbo or H1000 will probably be a top choice for 7mm mag but hard to find. So may want to shoot for hodgdons 4831SSC or just the H4831 ..Now if you want a really hard one..Try and reverse Eng. some Weatherby ammo. Its really impossible. I tried it to some degree and couldn't come close to the factory ammo speed the 257 Wby mag was producing from my vanguard. Good luck on the quest.
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