7 Rem Mag load data

[TopPin]

Knocking the dust off an old 7mm Rem Mag. Out of lack of winter projects decided what the heck try to work a load up for her. Looking for opinions on load data.

 

[LVJ76]

What bullets you looking to shoot?

 

[TopPin]

What bullets you looking to shoot?

Open to opinions and options probably 160 gr 170s personally

 

[Jud96]

My Dad and I did some pretty extensive load work up on his Remington 700 SPS Stainless 7mm Rem Mag this past year. We settled on Hornady 162gr ELD Match bullets seated 0.050 off the lands, Norma brass, Remington 9 1/2 Magnum primers, and RL26. I suggest finding your lands and starting the bullets 0.010 off. Then find your powder node.

We started around 65gr of RL26 and worked up in 0.2gr increments looking for a velocity node around 3050fps. We found a great node at 68.6-69.0gr that had low very minimal velocity change. He settled on 68.8gr for an average velocity of 3070fps and single digit standard deviation. We worked his seat length back and found that his rifle really liked these bullets 0.050 off. Please do not directly duplicate his load, start a few grains low and work up. Every rifle and lot of components can be totally different.

We also experimented with H1000 but chose RL26 over it due to better velocity and we have a lot more of it on hand. We started at 66.0gr of H1000 and stopped working up around 70gr. We got up to 3040-3050 but weren't seeing as consistent results as we saw with RL26.

 

[Lenwood901]

taggin in

 

[LVJ76]

Agree that with RL26 you'll get the most speed. In my case it won't work, its a temp sensitive powder and in the Arizona desert heat its no good, pressure spikes.

H1000 is temp stable, also IMR-7977. Won't get the most speed but for me its mostly about accuracy even if I lose some fps.

My choice is the 162gr SST, tough enough to not fragment at close range and still reliably expand at 700 yds, will go through bone no problem and turn vitals to jello.

160gr Accubond would be another great choice or the 154gr Interbond, a little less weight but very effective as well.

Hope this helps

 

[Wild Monkey]

Knocking the dust off an old 7mm Rem Mag. Out of lack of winter projects decided what the heck try to work a load up for her. Looking for opinions on load data.

Thinking about this as well, only I'm entertaining the Improved & longer neck for 308 Norma brass. Only for a better shoulder & more accuracy not just more tidbit of powder. I anticipate 3200 with the 162's.

 

[JIsbell40]

Worked up a load for my buddies lefty In a 24" 700 bdl shooting 160 accubonds I went with rl23 over rl26, h1000 etc. rl23 got more speed, lower ES and it's temp stable. 64.8 grains @ max box length yields 3,020 fps with an ES of 11 FPS over 5 shots. Win brass 210M primer. Zero pressure on this load in this rifle.

 

[johnnyk]

You are a relatively new member and I don't remember welcoming you, so....Welcome aboard!
I worked up a load in January 2018 for my son's 700P in 7mmRemMag, 26" barrel and I started with RL26 because I think it's a fantastically fast powder. I was loading a 169.5gn Wildcat (no longer available) sparked by BR2 primers.
I started with 68.0gn and worked up to 69.5gn in .5gn increments. Velocity started at 2972fps (68.0gn) and went to 3062fps. ES / SD for my top load (69.5gn) was 6 / 3.06 and accuracy ran 1/2".
The usual cautions apply. Good luck.

 

[AZShooter]

Retumbo worked well in four 7 Rem mags my friends and I own. 168 Berger Classic hunter. 72-73 grains. Velocities right around 3100 fps

 

[Creedmoor shooter]

I've always had good luck with the 162 eld-m and rl-26. Right now I'm shooting the 180 eld-m with 67 grains of rl-26 at 2958 and single digit sd. What twist rate is your 7mm? Assuming it's a factory rifle the 162-168 berger is about the limit for 9.5 twists. I'm stabilizing the 180 in a 9.25 twist at 1000-1600ft ASL so that's an option if you have a 9.25 or faster. Rl-26 is really hard to come by so my second pick would be h1000 or rl-23

 

[Backcountry sports]

My Dad and I did some pretty extensive load work up on his Remington 700 SPS Stainless 7mm Rem Mag this past year. We settled on Hornady 162gr ELD Match bullets seated 0.050 off the lands, Norma brass, Remington 9 1/2 Magnum primers, and RL26. I suggest finding your lands and starting the bullets 0.010 off. Then find your powder node.

We started around 65gr of RL26 and worked up in 0.2gr increments looking for a velocity node around 3050fps. We found a great node at 68.6-69.0gr that had low very minimal velocity change. He settled on 68.8gr for an average velocity of 3070fps and single digit standard deviation. We worked his seat length back and found that his rifle really liked these bullets 0.050 off. Please do not directly duplicate his load, start a few grains low and work up. Every rifle and lot of components can be totally different.

We also experimented with H1000 but chose RL26 over it due to better velocity and we have a lot more of it on hand. We started at 66.0gr of H1000 and stopped working up around 70gr. We got up to 3040-3050 but weren't seeing as consistent results as we saw with RL26.

 

[Backcountry sports]

71.5 retumbo powder 168 vld bergers work great I'm Remington xcr 7mm and both my cooper rifles 3065 to 3075 velocity

 

[WYO300RUM]

You are a relatively new member and I don't remember welcoming you, so....Welcome aboard!
I worked up a load in January 2018 for my son's 700P in 7mmRemMag, 26" barrel and I started with RL26 because I think it's a fantastically fast powder. I was loading a 169.5gn Wildcat (no longer available) sparked by BR2 primers.
I started with 68.0gn and worked up to 69.5gn in .5gn increments. Velocity started at 2972fps (68.0gn) and went to 3062fps. ES / SD for my top load (69.5gn) was 6 / 3.06 and accuracy ran 1/2".
The usual cautions apply. Good luck.

Thanks for listing what primer !