7mm lrm
- Thread starter ann brezinski
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As long as you leave a cleaning rod in the barrel so that it will clean the barrel AS YOU FIRE, you are good to go.
W-a-i-t for it .....
jakelly
Well-Known Member
The 7 LRM doesn't seem to make the velocity it should on paper. I've noticed several write-ups about the case where the velocity just seems low. Maybe it's a neck thickness issue or a flash hole issue, but something seems to be happening.
sandbar782
Well-Known Member
Good thread, looking like de-railment...
My 2 cents: I have limited experience with Magnum rifle cartridges, only having 1 in 300 WM. I have no issues with the belted cartridge and headspace off the shoulder like all my other cartridges. Many of my cases with up to 5 loads and show no bad signs of weakness.
In general, my preference is toward older, time tested, readily available cartridges, but I do believe that the LRM does have some admirable design features. I'm not sure it offers anything extra, though there are some excellent selection criterion previously posted. Good read..
My 2 cents: I have limited experience with Magnum rifle cartridges, only having 1 in 300 WM. I have no issues with the belted cartridge and headspace off the shoulder like all my other cartridges. Many of my cases with up to 5 loads and show no bad signs of weakness.
In general, my preference is toward older, time tested, readily available cartridges, but I do believe that the LRM does have some admirable design features. I'm not sure it offers anything extra, though there are some excellent selection criterion previously posted. Good read..
That's because it is a BRASS ISSUE not a design issue, this is why I prefer to have at least 2 sources for brass before I build.
My 7SAUM with Norma brass is pushing a 175ELD to 3150 .5gr under book max with a 27" tube.
Now that I know the Norma brass is rocking I will buy enough to kill this barrel. If it didn't work I had other options.
If Hornady FIXES the brass issue the LRM will probably be a great LR caliber, however I have never seen Hornady brass run with Lapua.
This is why FOR ME the #1 issue on picking a case is BRASS. Crappy brass can kill a spectacular case design and great brass can make a mediocre case pretty darn good.
jakelly
Well-Known Member
Clearly it's a brass issue. Whether that's a design or execution issue, I couldn't say until someone had demonstrated what was causing it. My guess is it's an execution problem, but something is going on with this chambering.
I also don't mind a single source for brass, it just depends on which source we're talking about.
I also don't mind a single source for brass, it just depends on which source we're talking about.
WildRose
Well-Known Member
Anytime a company has a monopoly on anything it's usually the consumer who suffers.Clearly it's a brass issue. Whether that's a design or execution issue, I couldn't say until someone had demonstrated what was causing it. My guess is it's an execution problem, but something is going on with this chambering.
I also don't mind a single source for brass, it just depends on which source we're talking about.
Iron Worker
Well-Known Member
My 26" Brux bbl 7mmWSM with 66grs of H1000 pushes a 184 Berger Hybrid 3,000 FPS.
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Deleted member 107666
Guest
5.9 years old...this thread, that is.
Iron Worker
Well-Known Member
Should that concern me?
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Deleted member 107666
Guest
Should it or does it...two seperate concepts.
