Thread: 7mmRM project

Ok team,

So this rifle isn’t new to the forum as I brought off another lad one here. His thread from 2016 didn’t really amount to much so I am hoping to get some fresh information to help shape what I do next. (And to check that what I am looking at all adds up)

What is the rifle: Rem 700 XCR 2 7mmRM

What gear do I have:
Brass - Winchester, norma and misc. (will just stick with one)
Powder - AR2225
Primer - Fed .210 (trying these as I have been told it may reduce extreme spread)
Projectile - 162 ELD X

Rife OAL cap = 93.48mm (from what the last owners notes say)
Current rounds sit at 85mm overall length. (Just under 10% reduction)
Bullet comparator reads 68mm
Land marks;



Disclaimer: I realised after I purchased that it only has a 22” barrel + a DPT can. So I understand that I will loose around 100fps from the stock 24” which likely means I wont hit 3000fps or have the longer 800m+ stability of the projectile.

Aim: Is to hit 2850-2900fps, and group 1 MOA +/- @ 100m

Intent: Use rifle mainly for 300-700m with good “boom flop” on Reds.

Information requirements/talking points:

Can someone please provide me with the Hornady/Powder tolerances and average fps, I believe its measured off a 24” barrel so I will take 100fps off until I get my hands on a chronograph.

It looks like 73.5gr of AR2225 was used in the past but with quite a large deviation (2850-2900fps) was achieved, which would explain slightly larger grouping.
I’m hoping that if I tighten up the tolerances in hand loads (inc. prep/trimming), that I can hit 2900fps with 74gr and Fed .210 primers (vs .215) and keep good MOA accuracy. Will work from 73gr up to max recommended. Otherwise I guess 2860fps +/- will have to do.

What are peoples experience with this sort of set up?

Should I just bite the bullet and get a 24” barrel?

Would it be worth while dropping the the projectile weight to get the fps and or nah? (Understanding that fps doesn’t = accuracy over distance)

Note: Already have a 7mm08 hitting 2770fps, sub MOA with Nosler BT 140gr. So I want better kinetics past 300m.

Cheers in advance.

HK

I wonder with the 22" barrel AR2217 might be better? AR2225 is mighty slow, goes well in a 24-26" barrel.

Nothing wrong with a 22 inch barrel in 7mmRM. Pretty sure Duleys get decent results with 20" version so I wouldn't worry too much. Mate owns a 22" and regularly shoots 5-600m with no issues at all.

Originally Posted by Hunty1

I wonder with the 22" barrel AR2217 might be better? AR2225 is mighty slow, goes well in a 24-26" barrel.

Fair point. Anyone else in this ball park/have some spare in the Manawatu I can use to compare against 2225?


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Just for anyone else looking at the data, these are ADI equivalent;




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No mucking about here mate, 72 grains of 2217 with 12 thou jump and go for the win!

Originally Posted by McNotty

Nothing wrong with a 22 inch barrel in 7mmRM. Pretty sure Duleys get decent results with 20" version so I wouldn't worry too much. Mate owns a 22" and regularly shoots 5-600m with no issues at all.

Im guessing the red on the graph is max recommended? Quite a bit lower than 73-74gr?

Originally Posted by Gibo

No mucking about here mate, 72 grains of 2217 with 12 thou jump and go for the win!

I’m pretty keen to give the 2217 a crack. Will take the 2225 back. I’m guessing it’s faster burning with a big bark and jump? (Pull the titty and hold on!?)

Also noted HF have the AR 22 available...


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Just work up from 69 to be safe mate, each rifle is different. My Rem700 was at 72.1 of 2217 in Hornady brass of all things doing 3010. 26" barrel

Sorry that's with the old 162 amax.

Originally Posted by Hunter_killer

Fair point. Anyone else in this ball park/have some spare in the Manawatu I can use to compare against 2225?


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@stagstalker have you got any 2217 spare?
Yea, red is max. But you could find your rifle doesn't mind over max. Seating depth in relation to lands will also affect pressure. Sorry for the shit image, if you need a clearer one flick me a PM.

Originally Posted by Gibo

Sorry that's with the old 162 amax.

Same/same from what I have read. I noted the AR 22 stuff uses less powder but is more expensive, so the 2217 sounds like a good option.


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I haven't had experience with a 7mmRM but can bang some figures through Quickload for you if you want

22" barrel shouldn't cause problems for what you're hoping to do. I'm chucking a 186 Berger VLD @3050fps out of a 21.5" barrel.

Win M70, 168VLD, Fed 215 primer, Norma brass and 74.5gn 2225

Originally Posted by winaa

I haven't had experience with a 7mmRM but can bang some figures through Quickload for you if you want

That would be real useful. Is Quickload an app?
Will run; Fed .210’s, 2217 (up 68gr+), Win brass, 162eldx, 22” Remington barrel (down from 24”)



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