35WhelenAI
WKR
- Joined
- Nov 20, 2021
- Messages
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What rifle are you shooting that chambers a 7mm Rem Mag with a 20" bbl?
My experience is that you’ll find groups open up or tighten up across powder charges. Retumbo was like that for me... first three charges I tried were 1.25 to 2.5”, nearly gave up. Pushed it a little more since I was loading longer COAL and damn they dropped to 0.5” or better.I'm watching this thread as I'm going to start loading for a 7mag also. Mine is a 20"barrel and I'm planning on shooting 140gr ttsx or 139gr lrx's. I was luckily enough to find some IMR 4831 this weekend but also have Imr 4350. I know the basics of reloading but I finally got chrono this year now I just need to learn to use it!
It's a Blaser R8. The barrel comes factory at 25 1/2" I cut it to 20" to run a suppressor. I will be loosing around 150-200fps. But the blaser actions can handle more pressure than most as they are designed to handle up to 338 lapua and 500 Jeff.What rifle are you shooting that chambers a 7mm Rem Mag with a 20" bbl?
Lord, I've messed this up. I deleted a post I thought was in the wrong thread but that post was in this thread. However the poster is clear about what he's doing. Here is his post from this thread. I missed it when I went back through.It's a Blaser R8. The barrel comes factory at 25 1/2" I cut it to 20" to run a suppressor. I will be loosing around 150-200fps. But the blaser actions can handle more pressure than most as they are designed to handle up to 338 lapua and 500 Jeff.
Of course just because the action cam halde it doesn't mean the case can.
Either way I'm ok with the loss of some velocity over the ease of not having to carry a rifle with a 33" Barrel.
Just curious, what your friend came up with for a load for the Barnes 145 LRx in the 7 Mag.My friend is working on a Barnes 145gr lrx load, wanted to use rl22 but couldn’t find it other than ridiculous gunbroker scalpers so he’s trying some rl23 I happened to have which is very similar so he worked up with that. He’s was very happy with his starting load velocity and pressure and is going to try shooting groups this weekend. If you can find either it might be a good option.
Funny enough he just emailed me a couple hours ago with his latest test with this. He reported 63.7g at 3025 fps at 64g he started seeing pressure signs.Just curious, what your friend came up with for a load for the Barnes 145 LRx in the 7 Mag.
What powder was he using for this test again?Funny enough he just emailed me a couple hours ago with his latest test with this. He reported 63.7g at 3025 fps at 64g he started seeing pressure signs.
RL23What powder was he using for this test again?
Interesting. Kind of disappointing with that speed. I'd have guessed 3200 pretty easily.Funny enough he just emailed me a couple hours ago with his latest test with this. He reported 63.7g at 3025 fps at 64g he started seeing pressure signs.
Yeah I think it was less than he expected too. He tried some 143g hammer hunters that were 36fps slower with 64g with no pressure signs so there’s more to try and wring out of those with that powder. He’s going to try find something else to try with the lrx first though.Interesting. Kind of disappointing with that speed. I'd have guessed 3200 pretty easily.