boomer68
Handloader
- Oct 23, 2006
- 852
- 52
Hi guys,
What would be a good powder to start with? I have RL26, H4831 and N565.
What would be a good powder to start with? I have RL26, H4831 and N565.
7mmRM - 140gr Ballistic Tip
- Thread starter boomer68
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 36,541
- 4,321
You will get better case fill and slightly higher velocities with N565 than with the other two propellants you name.
- Thread starter
- #3
boomer68
Handloader
- Oct 23, 2006
- 852
- 52
Good to know, thanks DrMike.DrMike":2c9tykpk said:
seokladuckin
Beginner
- Mar 21, 2021
- 198
- 2
63.5 grain of RL-22
Shoots GREAT in both mine .
One .226 3 shot group
One. .340 3 shot group
Sent from my SM-G975U1 using Tapatalk
Shoots GREAT in both mine .
One .226 3 shot group
One. .340 3 shot group
Sent from my SM-G975U1 using Tapatalk
seokladuckin
Beginner
- Mar 21, 2021
- 198
- 2
Old target I had
Sent from my SM-G975U1 using Tapatalk
Sent from my SM-G975U1 using Tapatalk
- Nov 4, 2004
- 23,580
- 5,000
RL22 is my go to powder for 140-160 gr bullets in the 7mm Rem Mag.
JD338
JD338
seokladuckin
Beginner
- Mar 21, 2021
- 198
- 2
What I found as well.JD338":1ph6co6w said:
I just wish it was temp stable
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baltz526
Handloader
- Sep 25, 2005
- 1,074
- 8
H4831 was always the best performer in my 1st 7mm rem mag with the 140gr BT.
- Thread starter
- #11
boomer68
Handloader
- Oct 23, 2006
- 852
- 52
Loaded up some H4831 and RL26. Once the weather gets a bit warmer (yeah, doesn't happens too much in Dec), I'll get out to the range and see how they perform.
IMR 4350 has always been my go to powder for my 7mm and .300 Win. magnums. I took my old 7 mag. out of the gun case a few years ago with the idea of hunting a powerline with it. I also decided to try the Nosler Ballistic tip bullets, since I had tried 140 grain partitions and 139 grain Hornady's before and never got good groupings I decided to try the 150 grain bullets.
With a moderate load of IMR 4350 I was able to get good repeatable groupings but when I stepped up the load the group always opened up. Sticking with IMR 4350 I tried come CBT 150 grain BT plated bullets. These bullets grouped better at the loads nearing max. but not great while retaining good groups at the moderate load. I went with the heaviest loads that still gave me usable accuracy.
Next time I work up loads I will have a better selection of powder to choose from. I just wanted one powder, IMR 4350 to be my all caliber best powder.
To be fair this rifle has never shot lighter bullets well but has done it's best work with 154 and 160 grain bullets. I just wanted to try the lighter ones this time.
I've got old eyes now and all groups were shot with a Leupold 3.5 X 10 on 10 power. With a higher mag. scope or another shooter all these groups probably would have been tighter.
With a moderate load of IMR 4350 I was able to get good repeatable groupings but when I stepped up the load the group always opened up. Sticking with IMR 4350 I tried come CBT 150 grain BT plated bullets. These bullets grouped better at the loads nearing max. but not great while retaining good groups at the moderate load. I went with the heaviest loads that still gave me usable accuracy.
Next time I work up loads I will have a better selection of powder to choose from. I just wanted one powder, IMR 4350 to be my all caliber best powder.
To be fair this rifle has never shot lighter bullets well but has done it's best work with 154 and 160 grain bullets. I just wanted to try the lighter ones this time.
I've got old eyes now and all groups were shot with a Leupold 3.5 X 10 on 10 power. With a higher mag. scope or another shooter all these groups probably would have been tighter.
