Hot 7mm Rem. Mag. load question

[Nard]

I have an 1885 Browning in 7 mag. And have been trying several loads, went by a buddy’s place today and tried three loads and then he offered a fourth one to try. 145 grain Speer Grand Slam loaded with 65 grains of IMR 4350. Don’t look for it in the book, they don’t go this high! LOL Just wondering if anyone else has had any experience with a similar load. I didn’t see any pressure signs and got a three shot 100 yard group that was just over ½ an inch.

J.B.

 

[Lee Martin]

Sounds high. Most manuals top out at 61.0 - 61.5 grains. I'd play it safe and back the load down.

 

[Nard]

I think I will back 'em down some. I pulled one of these bullets down today and found they were loaded with 66.8 grains! The 1885, B-78’s and No.1’s are stout guns, this load in something else might cause problems but I did find a load in my Lyman book that is very close to the 65 grains of IMR 4350. I’ve got some 120 HP’s to try that I loaded, hope they do good.

J.B.

 

[427mach1]

I think I would stop shooting your buddy's reloads. I'm not trying to be smart, but if he can't load them to within 1.8 grains of what he told you, you're asking for trouble. Stick to factory loads or load your own and follow the manuals, and don't exceed the maximum recommended loads.

 

[Stonewall]

Using Winchester brass - old CCI-250 primers I load 66.5 gr. Imr-4350 and 140 Sierra or Nosler partition bullets in 7mm Rem Mag with a .025 jump to the lands.

This should be worked up to as varations in brass -rifle barrels -chamber can make a BIG difference .


I shoot this in a old Ruger #1 -well under .5 @100 yards.

Glenn