7mm long range rifle

nastynatesfish

nastynatesfish

Active member
Ive been bored sitting at home since it nasty out here in southern Arizona the past few days.
Been thinking on what to do with my 7rem mag when I need a rebarrel, not anytime soon but just burning time.
I was reading post on the 7lrm. Ehh I'm not sure on it. I know it's a helluva cartridge and a proven 1200 yrd rifle. I don't think I'll ever shoot at game over 8-900 tops just because. I'm not interested in a saum, wsm due to brass availability. I was reading on the RUM being really rough on barrels. While reading I come across an article by a gun builder and his 7mm practical. I'm kinda likening it due to I have components, I have quite a bit of 300 win mag brass too.
Anyone have one or know anything on it?
 
If I was to build a 7mm for LONG range, it would be a 7mm Mashburn. (7mm-300 WM). Twist it tight to shoot 180 gr Bergers and really stretch it out there. I guess the practice uses the 30* shoulders? I'd rather skip that fire forming step. The standard 7-300wm is just a resize.

I'll never engage game that far, and I am tired of Magnum recoil. So I'd just build a good 7-08 AI (or Hadley) and shoot some good 140/160 class bullets. Plenty of reach for anything I would want to do.

Sorry to be off topic of the original '7mm Practical' question. Just offering some additional suggestions
 
No that's good stuff Shane. I hadn't thought about having to fire form for the shoulder. I'll look into the mashburn round some also. My rifles are usually heavy enough recoil doesn't bother me. I'm a big guy too so I wouldn't admit it if I did lol. Just blame dirt in the eye for the tears...
 
I think the noise and concussion is what get to me. I'm only 28 and have tinnitus starting. Those big boomers ring me easily.

The Mashburn is all over 24hr Campfire. I think there is a SuperMashburn or something of that sort, too. It's a little longer win more case cap, iirc. I'll do some more digging, and get back to you.
 
Have you considered just using a longer barrel on the standard Rem Mag? Or maybe an STW? That way, you have factory brass available and such.

After some more research, the Mashburn seems to be a hot ticket. Not too much fuss to make brass, etc. And I see quite a few 7-300WM reamers on different smiths lists. That would be an easy and effective way to go, IMO.
 
I have a 26" barrel now. Wouldn't do 28 for a hunting rifle. I'll look into it and see what I can find for info. I have time, in the end I may just stick with the 7rem mag. Its not let me down as of yet and it's plenty of rifle for anything il hunt. Just always the search for something new and different I guess
 
When ALL factors are considered, it is REALLY hard to beat the good old Rem 7mm mag IMO. Once you go bigger, more powder/recoil, less barrel life, for not a lot of gain IMO.

If all these things really didn't matter, I would go with a 7mm RUM. I put about 50 rds. down a 300 RUM and recoil did not bother me a bit. Nor my friend Tony. However, my buddy Dave had enough after the first shot. So you really need to consider if it is something you can/will shoot well or not. Before some guy like me finds it on the 'used' rack for a nice price.........
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I want to keep the 532 bolt face I have so I don't need to buy a another bolt. I was actually looking up on the 7-300 and seen some stuff on the 7mm Rouge. It looks pretty nice also. Running a 180 berger at almost 3200 with a 7-8 count on brass life
 
I had the bolt face opened up and Sako extractor installed on my last 7mm mag build. It started life as a 270 Win, then it was a 6mm-06, now it is a 7mm RM........
 
That is how heavy a bullet you need in the .300 to equal the BC of a 7mm 162gr. A-max. It also takes about 10 more grains of powder and recoil is noticeably greater. If just punching paper/targets, I see no advantage to the larger caliber bullet at all..........
 
Originally Posted By: 2muchgunThat is how heavy a bullet you need in the .300 to equal the BC of a 7mm 162gr. A-max. It also takes about 10 more grains of powder and recoil is noticeably greater. If just punching paper/targets, I see no advantage to the larger caliber bullet at all..........

+++++1
 
Originally Posted By: 2muchgunThat is how heavy a bullet you need in the .300 to equal the BC of a 7mm 162gr. A-max. It also takes about 10 more grains of powder and recoil is noticeably greater. If just punching paper/targets, I see no advantage to the larger caliber bullet at all..........

Yep!
 
That's why I've stayed 7mm myself. I love shooting my 162 amax but have got gready lately with them. I just got a 308 savage that I'm gonna shoot as is for a while but Im stayin 284.
 
I spent a day shooting one of Gunwerks 7 mm LRM's.
180 grain Berger hybrid at 3050 ft./s in 25.5" barrel is a beautiful sight
smile.gif

I used the 7 mm LRM in a long-range tactical match this summer.
We took second place. I was using this cartridge in a specialty pistol though.
I really like this cartridge.
 
Xp, is gunworks the way you'd have to go to get a reamer or could you get it made from PTG? I'm also wondering on brass for it also. That'skinda the nice thing in my mind about the 7mm practical, 7-300wm and the 7mm rouge.
 
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