CTFlatlander
Beginner
- May 17, 2020
- 15
- 24
Hi -
I am looking for some help with my 30-06. I have an old Remington 725 with a 22" barrel. I believe this gun has the 1/10 twist. I've always shot 180grain factory loads out of it with good results. Mostly good results for killing deer, I never really put a lot of rounds through it though. It was always the nice weather gun because it was a gift from my parents.
I wanted to reload for it and thought I would start with 180 partitions and H4350. I also tried RL16 with the partitions. Now that I am shooting it a lot more I'm seeing some strange stuff.
With H4350 I have no pressure signs up to 56.5 grains, but am shooting 55.5 because I am getting 2740fps on a magnetospeed. This is with CCI200 primers. I've also shot Hornady SST's and Norma Bondstrike 180's and all are in that same pressure range for the load. I don't have group info on those yet. Usually my first 3 shot group is OK. Maybe an inch. But then things fall apart quick. I'm lucky if I can get 3" by the end of a session.
Other info - I do a light crimp. I realize I don't need it in a bolt rifle, but I do it on my 308 with great results. Seating depth started at about .040 off the lands. This never shot great. I then measured some factory loads using a Hornady comparitor and set the depth to match those which is .060 off the lands. this is where I get a good 1st group.
I am not doing this perfectly by an means and waiting for a long time between shots, but I have never seen a gun open up like this from a barrel getting warm.
I saw the thread here https://forum.nosler.com/threads/30-06-180-grain-accubond-with-h4831.43019/ and it made me think I should be trying 4831. Does anyone have any good ideas for what could be going on here?
Thanks in advance.
Tim
I am looking for some help with my 30-06. I have an old Remington 725 with a 22" barrel. I believe this gun has the 1/10 twist. I've always shot 180grain factory loads out of it with good results. Mostly good results for killing deer, I never really put a lot of rounds through it though. It was always the nice weather gun because it was a gift from my parents.
I wanted to reload for it and thought I would start with 180 partitions and H4350. I also tried RL16 with the partitions. Now that I am shooting it a lot more I'm seeing some strange stuff.
With H4350 I have no pressure signs up to 56.5 grains, but am shooting 55.5 because I am getting 2740fps on a magnetospeed. This is with CCI200 primers. I've also shot Hornady SST's and Norma Bondstrike 180's and all are in that same pressure range for the load. I don't have group info on those yet. Usually my first 3 shot group is OK. Maybe an inch. But then things fall apart quick. I'm lucky if I can get 3" by the end of a session.
Other info - I do a light crimp. I realize I don't need it in a bolt rifle, but I do it on my 308 with great results. Seating depth started at about .040 off the lands. This never shot great. I then measured some factory loads using a Hornady comparitor and set the depth to match those which is .060 off the lands. this is where I get a good 1st group.
I am not doing this perfectly by an means and waiting for a long time between shots, but I have never seen a gun open up like this from a barrel getting warm.
I saw the thread here https://forum.nosler.com/threads/30-06-180-grain-accubond-with-h4831.43019/ and it made me think I should be trying 4831. Does anyone have any good ideas for what could be going on here?
Thanks in advance.
Tim