160 Nos AB 7mm Rem Mag H1000

[scdogman]

New to reloading. Maybe 150 rounds under my belt

Need advice on Max load for the 160 NAB using H1000. Nosler doesn't list the h1000. Hodgdod list 66 ft max but for the 160 nos partition. I have seen guys claiming over 70 grams and quick look stating over 70 as well.

I was looking to do some testing using 68.5 as the max.

Any advice? Any experiences?

 

[MagnumManiac]

New to reloading. Maybe 150 rounds under my belt

Need advice on Max load for the 160 NAB using H1000. Nosler doesn't list the h1000. Hodgdod list 66 ft max but for the 160 nos partition. I have seen guys claiming over 70 grams and quick look stating over 70 as well.

I was looking to do some testing using 68.5 as the max.

Any advice? Any experiences?

Start low and work up, your rifle will tell when you reach max.
If you use a chrony, you can stop when you reach published velocities.
I don't, I go by what my rifle tells me.

Cheers.
gun)

 

[MarkA]

But Nosler does have data for the 168 grain, will give you some info even if not the exact bullet. Looking at powders common to both bullet weights i.e. Magpro, RL22, RL25 the 160 bullet max charges are equal or can be 1-2 grains more with 160 bullet. Stands to reason that H1000 max with 160 bullet could be as much as 71 grains. Let chronograph and load workup in your gun tell you. IMO 3025 to 3050fps will be max'd out in ANY gun.

In your gun that may be 2950 to 3050fps

7mm Remington Magnum Load Data - Nosler

 

[Ringer]

I use 74 grains H1000 with 160 AB and Federal magnum primers for 3050 fps in my Sako A7 loaded to magazine length.

I get groups around an inch at 200 yards and 6 to 7 reloads per case.

Normal cautions apply that this is safe in my rifle but may not be in your rifle.

 

[MarkA]

I use 74 grains H1000 with 160 AB and Federal magnum primers for 3050 fps in my Sako A7 loaded to magazine length.

I get groups around an inch at 200 yards and 6 to 7 reloads per case.

Normal cautions apply that this is safe in my rifle but may not be in your rifle.

Yep, the 3050fps is the key indicator.

 

[Shortmagman]

I have loaded for my 7mm Rem Mag for almost 20 years. When I first started I read an article in a gun mag that stated H1000 was one of the best powders, so I loaded H1000 under bullets from 140-175 grains. I used a Hodgdon manual(26th edition) as my guide. This was a manual published in the 1990's, and it gave 71.0 as a starting load for a 154-162 grain bullet and 72.5 grains as the max, so I loaded using this data. With the 175 's their starting load was 69.0. I shot using this data over a chronograph and found that I was getting over 3000ft/sec., with 72.0 grains. I also found that that the pressure was too high, so I starting looking for other data and found that Hodgdon published other data in their Annual Manual and was shocked to find that for a 160 Nosler Partition that 66 grains was the max load listed and that is true in their latest 2016 Annual Manual. I was starting 4-5 grains higher that the MAX!

What do you do with this conflicting data? Follow the advise that has been given--let you gun tell you. Use a chronograph, start low and work up. I found that with my gun a factory Ruger Mark II., 70 grains worked very well with the 160 Accubonds. The velocity I was able to get was just under 3000ft/sec., it was also very accurate.

 

[scdogman]

Thanks for the info guys!!!!