7mm Mashburn Super
- Thread starter Leslil
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,186
- 5,656
I believe that will work just fine--excellent components to build a fine rifle for a great (though neglected) cartridge. You are perhaps aware that SBJ358 has done quite a bit of work recently with this cartridge.
http://forum.nosler.com/viewtopic.php?f=4&t=28034&hilit=Mashburn
Looking forward to your work up.
http://forum.nosler.com/viewtopic.php?f=4&t=28034&hilit=Mashburn
Looking forward to your work up.
- Thread starter
- #3
I've probably already read it but I'll reread it if so.
I just had a visitor from the PO.
Scoped and ready at 9.5#. A half pound over my target weight but I went with a lot heavier glass and rings than planed. I could drop to a 6x42 Leupold and Talley LW low's and be well under. But this will be fun for now. Bring on the steel!
I just had a visitor from the PO.
Scoped and ready at 9.5#. A half pound over my target weight but I went with a lot heavier glass and rings than planed. I could drop to a 6x42 Leupold and Talley LW low's and be well under. But this will be fun for now. Bring on the steel!
truck driver
Ammo Smith
- Mar 11, 2013
- 7,267
- 805
Very nice setup. That should serve you well.
Wow. Cool set up! I really love the cartridge a lot. Mines just a Model 70 re chamber but so far it's shown me more accuracy than just about any other rifle I've shot. Mine goes right at 8 1/2 lbs scoped with a 6x42 and feels pretty good.
What are you planning to run through it for bullets? I bet it's going to drive nails too!
What are you planning to run through it for bullets? I bet it's going to drive nails too!
- Thread starter
- #6
Thanks SJB358.
This one is coming great and I haven't even shot it yet. Range time in the morning. It's going to be a long night at work. Lol.
I also shoot a 7-08 so I have a wide variety of bullets to try but the main focus will be between tge 168gr & 180gr. Berger and the 162gr. Amax. I'd like to try the 175gr. LRAB but there to spendy for shooting steel.
This one is coming great and I haven't even shot it yet. Range time in the morning. It's going to be a long night at work. Lol.
I also shoot a 7-08 so I have a wide variety of bullets to try but the main focus will be between tge 168gr & 180gr. Berger and the 162gr. Amax. I'd like to try the 175gr. LRAB but there to spendy for shooting steel.
wildgene
Handloader
- Jul 4, 2011
- 1,597
- 2
...you might want to consider trying the 168gr. Custom Competition. Keep an eye on SPS, they show up occassionally...
http://www.shootersproshop.com/
http://www.shootersproshop.com/
- Thread starter
- #8
Leslil":3nidp1lr said:
Good luck! I am looking forward to your work with the big 7. Are you fireforming your cases using pistol powder or under something like a 140 and IMR4350?
Either way, please post pictures. Looking forward to your work. Hoping to get a little more time with mine soon. Scotty
- Thread starter
- #10
I'm using the standard 65gr. I4350 and the 140gr. of your choice. Would a full case of TrailBoss be easier on my throat?
Pics a little later. I started off with 9 Rem psp to curer the DBC and get sighted in. First 3 140gr. BT's went into .8". Next up was 140gr. Nos. PT. same poi as the BT. 3 in .97". Next 3 back to the 140gr. BT 3 in .280"
This is fun!!
Pics a little later. I started off with 9 Rem psp to curer the DBC and get sighted in. First 3 140gr. BT's went into .8". Next up was 140gr. Nos. PT. same poi as the BT. 3 in .97". Next 3 back to the 140gr. BT 3 in .280"
This is fun!!
- Thread starter
- #11
Leslil":mbbgu78v said:
I have no idea how well Trailboss would work for you. Most use between 13-15 grains of Bullseye and a tuft of toilet paper. I am going to actually tweak my seating depth a little with the 140 AB's and BT's with the fireform load. They are plenty fast at 3220 and I could hunt deer with them. 139 Hornady's shot decent as well, but I'd not expect good things from them at 3200. The AB load with 4350 would smack deer pretty hard.
Oh, I forgot to mention, how cool is it putting a fresh case in the chamber then easily extracting a beautifully formed MSM... I love that! Plus, trimming is a thing of the past in my rifle. I can't seem to make them suckers grow much at all.
- Thread starter
- #14
DrMike
Ballistician
- Nov 8, 2006
- 37,186
- 5,656
Very encouraging start. That has to put a grin on your chin. 
- Oct 30, 2004
- 24,190
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Velocities?
truck driver
Ammo Smith
- Mar 11, 2013
- 7,267
- 805
Looks like you got a nice shooting rifle.
- Thread starter
- #19
SJB 2.865 to the OG and I'm .01" off the lands. I have to admit that when I popped the first case out and looked at it, I was like "Damn that's cool"
Foits. Nothing for speed yet. I have a Magnetospeep on order for working up the full power loads.
I can't wait to stretch it out. A buddy at work has a farm and swears we can go out to a mile. I'll be happy to hit consistent at half that. It helps to use bigger targets.
Foits. Nothing for speed yet. I have a Magnetospeep on order for working up the full power loads.
I can't wait to stretch it out. A buddy at work has a farm and swears we can go out to a mile. I'll be happy to hit consistent at half that. It helps to use bigger targets.
