Home Forums Hunting & Shooting Hunting Rifles 7mm Remington Magnum with a 22 inch Barrel

One of the reasons the .264 WM failed commercially.

for conversation, from QL

max load under 140 gr. Hornday in a 22" 7mm-08 will run 2917 fps

max load under 140 gr. Hornady in a 22" .280 will run 3004 fps

max load under 140 gr. Hornady in a 22" 7 RM will run 3206 fps

max load under 140 gr. Hornady in a 26" 7 RM will run 3342 fps

all calculated using optimum powder for velocity and SAAMI pressures.

probably about the same diff @ 24" and 26" but i don't care enough to run the numbers. still, i see 200 fps as a healthy step up.

this suggests you will loost 34 fps per inch of barrel in the 7mm RM when going from 26" to 22"

Thanks for the calculations Toad. What powder did QL indicate as being optimum for the 7Mm Mag?

Norma MRP, and second up was IMR 7828 at ten fps slower

...........Only 280 velocities from 22" 7mm Mag? I wouldn`t bet on that!

And all the extra noise and the extra blast, is over exaggerated in some circles.

Thanks. I have two or three pounds of 7828 just sitting on the shelf asking to be burned up.

As are the benefits of a 4" shorter barrel.

the 7RM is a good use of it. i use only 7828 in my 264s and 7 WSM.

another calc. i forgot was to do 26" 7mm RM speed. it was 3342 fps.
that means you loose 34 fps per inch of barrel

Thanks for the 26 inch info. 34 fps per inch isn't bad at all.

that's right in the mix of what other cartridges give up.

i looked at all of the real life data i could find about velocity/barrel length, and almost all of the cartridges came in at 25-45 fps per inch.

One of the reasons the .264 WM failed commercially. [/quote)

Wondered if someone would bring that up. IIRC that 22" 264 dropped the 264 performance level to that of a slow 270 Win. with a "helluva wollop" and great muzzle blast.HBB, nuff talking start doing, get with it. oh wouldn't buy that stuff info you got earlier about using a faster burnrate powder either. The slower burners will still serve you better in the 7 RM. My 2 cts and the right to have and express it. Magnum Man

One should always lope of about 4" of magnum barrel that way when you carry it all day your p-zzy wont hurt

4" Loped Of Off The 338 Win Mag

of course 'handy' doesn't matter if you don't make it past the hay bales...

here's a 21" .375 AI. yep, it's loud, but most guns are...

Nice rifle, what kind of scope do you have on it.

it's a Leupold 1.5-5 MK4. it wasn't my first choice (but i had it sitting on the shelf). it's growing on me though.

my shortest magnum rifle (.350 RM) at 18.5"

Love M 600.

I have a 673 in .350 RM that is a really neat rifle.

small world... this is my 673 (.350) , de-ribbed and poked into a McMillan MR stock.
of course @ 22", it's spent zero time in a haybale hide

kinda want it's brother in 6.5 RM too.

That rig is a pure plain killing machine and easily one of my all time fav top 10 guns from the Fire!

Dober

Mine has been deribbed but it still wears the factory stock.

That is a nice set up you have.

No. They made it with a 24".I have one.The 300 WM FW had a 24" as well.