I would appreciate everyone's opinions, be they pro or con.

I would also appreciate load suggestions. I am having a Rem 721 returning that is re-barreled for this chambering. From what I can gather, the cartridge will probably be like loading for the .264 Win Mag..........slow burning powders like US-869.

Bullets? I'm thinking 160's or heavier. Big BC's........

I will be having a muzzle brake installed to save my shoulder

r-

Are you kidding us? anyone asking this question would not have a rifle returning w/o knowledge.

Horseshit!

Sorry if you think I'm kidding.

I'll fill you in with more info. I sent the 721 in because it had a worn out barrel. I already have another rifle chambered like it, so I didn't want to have a duplicate. Plus I didn't want to spend a ton of money on a custom premium barrel. My gunsmith told me he had an over-abundance of factory take off 7mm RUM barrels and he would install one basically for nothing.

I don't own anything in 7mm, so I said......SURE!!!!

So I'm not kidding about wanting some input, pro or con about this cartridge. The only thing I know about it (and it may be enough) is from the research I've done on the net. It seems that it may not be very popular with those here on the forum.

Here's what I know:

1. Overbore. Likes slow burning powder like H-870 to achieve best velocity.

2. Heavy recoil. That's why I'm putting a muzzle brake on immediately. I put one on my .300 win mag and am really pleased.

I'm guessing it will be similar to loading for the .264 win mag.

Any additional thoughts are appreciated, except for the horseshit.

If you own one and don't want a duplicate you can/should've had it throated for VLD bullets.

That set up would make a long shooting rig.

Powder should be as slow as possible with hot primers.

Buliwyf:

Get up the wrong side of the bed this morning?

Chill out, it'll get better.

quote:

Originally posted by Buliwyf:
r-

Are you kidding us? anyone asking this question would not have a rifle returning w/o knowledge.

Horseshit!

Ever see the movie Stripes with Bill Murray??? Remember Sgt Hulka? His line is appropriate here. "Lighten up Francis"

Give the guy a break. Most of us have bought a gun in a chambering we didnt know much about. Half the fun is learning about it.

quote:

If you own one and don't want a duplicate you can/should've had it throated for VLD bullets.

That set up would make a long shooting rig.

Powder should be as slow as possible with hot primers.

Thanks 366,

I wish I had your input before it was put together! It will be throated to factory specs I'm sure. The slow burning powder confirmation is appreciated. Do you own one? What's your load? It will be a hunting gun.

You gotta do 180 Bergers or heavier...some lathe turned bullets or maybe 200 grain Wildcats. Anything less and the STW or WSM or Rem. Mag can almost match with better barrel life.

I have had no difficulty in my 300RUM with the 210 VLDs in my std. chamber. Though I'm certain if I wanted a one load gun its accuracy might benefit from selective throating.

In the 300RUM I am getting great groups with AA-8700.

quote:

Half the fun is learning about it.

Hope you are a quick study. These barrels won't last long!

quote:

Hope you are a quick study. These barrels won't last long!

That's why I'm looking for a head start with some guy's input who have one!

My gunsmith has a pile of these 7mm RUM barrels, so I'm in good shape along those lines. AA-8700 is no longer in production. Anybody tried the US-869? It is THE way to go with the .264 and I thought it may be the same with the RUM?........

quote:

Originally posted by rcamuglia:
-- AA-8700 is no longer in production. .......

That's bad news, I'm down to three pounds.

quote:

That's bad news, I'm down to three pounds.

Yeah, and it won't last long dropping 90 grains at a time!

So right!

Actually 103 to 110

rcamuglia, I have no experiance with it, actually I've never even seen one. However, like Tyler says, with overbore like that use heavy bullets and slow powder.
If you can get the VLD's to shoot well enough, set 'er up for long range shooting.

I think I can work it out.

Thanks for the responses!

quote:

Originally posted by DuggaBoye:

quote:

Originally posted by rcamuglia:
-- AA-8700 is no longer in production. .......

That's bad news, I'm down to three pounds.

And I'm down to one pound for my 416 Rigby....