Home Forums Hunting & Shooting Custom Rifles & Wildcats Wildcatting the 7mm Rem Mag

good.

I have over 50 rifles, and none of them run. What am I doing wrong?

Timing? Spark plug gap? Fuel?

Life.




Bolt handles all fall off?

That's not true - I've seen dozens of your rifles run East never to be seen again. I believe there is a correlation to the drawn reciprocation dingle arm and its subsoidial reciprocrations.

David

Can you link to that thread please?

http://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/4460772/15/The_7mm_Mizzum

Rick's pictorial starts on page 36 of that 7mm Mizzum thread.

He's so organized!

I agreed to purchase a 7mm Weatherby today and was looking at Nosler data. They are showing in many cases 8-9 grains in additional powder charges for the Weatherby over the Remington and significantly more velocity with the Weatherby, but are listing case capacity as identical.

Interesting that powder charges are that much higher with the Weatherby round. I have never loaded for a Weatherby, but the one I played with did 3200 with 160s and both Weatherby and Federal factory ammo.

Freebore.....it's like adding case capacity.

I don't think you'll see 3200 FPS out of that 22" bbl, but who knows?

I am expecting 3000-3100 fps with 22", but will know soon enough.

I do like the 7 Mashburn. It's like a wildcat for dummies. Fireworm with any 139-145 bullet with 65 grains of 4350.

Load it with H1000 or Retumbo and look for 3200-3250 with a 160, 3050-3100 with a 175 and call it a day. Mine was so easy it was like cheating.

I use Hornady brass and can't see a danged thing wrong with it.

I ran across a Remington Classic 7mm Rem to experiment with along the lines of this thread. I got it home and cleaned it up and decided it was unfired. I bedded it and set trigger to 2.5 pounds. Took it out to shoot today and shot the below group starting on shot number three out of the rifle with no barrel break in. The lower shot was after a scope adjustment, and then it settled in and started shooting the same hole. I shot it hot to see how long it stay in the hole and it threw the 7th round high and left. This was with Hornady factory loads and it did about the same with handloads and 160 Partitions. Didn't chrono so not sure of the velocity. I hate to mess with this one so am going to have to experiment with another 7 Mag ; )

Never, never, never shoot the donor.
I'd still throat it long and give it the powder it begs for.

Yessir, 100% agree !

Bought two Rem 700's in 7mm Rem Mag and didn't bother shooting the boring ol things and chopped them up, one was brand new with only 1/2 box ammo thru it and came with the 1 1/2 boxes of Barnes Vortx 150 gr TTSX ammo for free, still have it .....

After some minor " give it the powder it begs for " renovations along with the additions of McMillan, Jewell, Bartlein, X-Caliber, ATACR and XTR2
they became rifles worthy of the "magnum"

pic shows what the new 7mm LRH does with the 195 Bergers with initial load developement, have room to go yet and should reach 3300 fps
the other rifle is now the 300 LRH and it does 3300 fps with the 212 ELD-X for max and accuracy load at 3240 fps , and it all works with 5 round detachable mags, imagine that

Well past time to move beyond the antiquated "belted magnum" craze, they are no longer interesting ......
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I have two 700 7mm RM's & a 77 7mm RM. The 700's shoot less than a MOA with almost every load I've tried. The 77 shoots about twice the size groups. But it shoots fine for big game rifle. I'm thinking 28 Nosler. I can't put up with the 77's stock - it is a POS.
So I'm thinking restocking the 77 and rechambering to 28. But then maybe selling the 77 and rechambering one of the 700's. At any rate I've got too many projects and am still just in the musing portion of project.

Impressive numbers.

What is a "7 Long Range Hunter" ?
How is it different than a 7 Long Range Magnum?

Well....I wouldn't exactly relegate the belted magnums to the bone yard quite yet..

After all they are the most commonly encountered and distributed magnum cases out there,even if the newer stuff is fun to play with. Plus they kill millions of game animals annually I bet.

What is the water capacity of this 7mm LRH? Isn't that just the old 30 Newton necked down?

My Long Range Hunter (LRH) and the Precision Rifled Ordnance (PRO) wildcats are off the 338 Norma Magnum case necked and improved, the PRO series use typical throats and have more case taper, the LRH 'cats are maxed out case dimensions and throated specifically for the heaviest, longest and highest bc bullets in each caliber for maximum powder capacity, I use 300 Norma Mag, 338 Norma Mag and 423 Dakota (Lapua made) brass as well as cut down 338 Lapua Mag brass, no shortage of brass for these wildcats, can also use 416 Rigby brass cut down and formed if the need arises ......

The 7mm LRH has 108.5 gr h20 capacity that was verified with fireformed (once fired) cases

The 375 Ruger is based on the 30 Newton and the 7mm Long Range Magnum (7mm LRM) is off the 375 Ruger, the 338 Norma Mag case offers more case capacity in a shorter case length than the 375 Ruger, all my wildcats off the 338 Norma operate in 3.850" length detachable mags with the longest bullets available