7mm300RCM Opinions

[the hunter]

Why limit yourself to a short action?

Because most paid losers do to

 

[MudRunner2005]

Ya I just can't afford the best right now though, lol I'd love to go with an ss cartridge. There's also a + to the prc too, it is that I can buy off the shelf ammo when I need it. I don't have things set up yet for reloading, hopefully by the time I get such rifle done I will be able to reload soon with it. I very much appreciate you guys with the help but at the price of the ss is just out of my league.

It's cheaper to buy once and cry once, than to build 1 you sort of want, then later rebuild it into what you actually want. But if you don't reload right now, that adds another expense to the game. The 7SS is exactly what you're wanting, but it's currently out of your price range for now. So, if you already have another gun that can get you by for this season, save up more money and build the 7SS for next season. Just a thought.

 

[WildRose]

Because the short actions are cheaper to get, factory Remington and aftermarket, lighter. I know I should know by now that any short action cartridge with "magnum velocities" don't belong in a short action if your going to shoot hand loads eventually with bigger bullets and the people that make such rounds should accommodate for that but don't.
I really would like to have a 7ss or 6.5ss but dang the brass is expensive!!! Even the new prc is cheaper but Hornady brass from what I hear is just that, "cheap", and SAUM brass is not much better priced with a rebated rim and hard to find. So that brings me to something that is saami approved, factory ammo is on the shelf if I need it and once you do go to a long action from what I've read you do get around the 3000fps with 147-150's. So by that time with a long action I believe there are better contenders out there.
It just amazed me at how fast the 300RCM with its 30 cal 178-180bullet at a COL of 2.830-2.840 can get possibly 2600-2650. I still think a 6.5prc necked to 7mm would work great but I have no idea, I'm still learning about the trade/profession/art. Still would probably need a long action though. I can see on a print of a reamer where and what the freebore is but on a print of the cartridge I don't have the eye for that and like I'm saying I'm still learning the art. Can't wait to start reloading when I catch up on bills and save money for reloading and another build, 3 rifle builds in a year got a little more expensive than I thought!!!

Build it on a long action and it will cost you very little more but leave you lots of room for the future as bullets get longer.

It's really getting to the point that building on a short action for long range is becoming futile.

 

[WildRose]

Ya I just can't afford the best right now though, lol I'd love to go with an ss cartridge. There's also a + to the prc too, it is that I can buy off the shelf ammo when I need it. I don't have things set up yet for reloading, hopefully by the time I get such rifle done I will be able to reload soon with it. I very much appreciate you guys with the help but at the price of the ss is just out of my league.

The 7PRC will almost certainly become standardized very soon.

I prefer the .375Ruger case but there's very little practical difference between the two. My preference is more due to my abundant .375Ruger brass supply since I shoot two of them.

With the PRC if you build it on a long action you'll be set for life, the bullets won't get long enough in our lifetimes for you to run into magazine or feeding issues.

 

[Wild Monkey]

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[Wild Monkey]

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[WildRose]

IMO, for what it's worth, & that's not much... Decide what Bullet you want to Shoot 1st. Then choose the Case. You can shoot the 162 ELD with an 08 based 7mm. Every person I have seen posted who built a 7mm-375 Ruger swore they would not do it again do to Short Barrel Life. 7-SAUM also can have a very short Barrel Life. 7-6.5 PRC is not off the Shelf AMMO as of yet. Seems you want a 284 off the Shelf or Wildcat the 6.5PRC. / Oh and I'd like to Add: 7-6.5 PRC can be easy for you if you CAN use the 7-Rem SAUM Die set on 6.5 PRC Brass & have your Gunsmith use a 6.5 PRC Reamer with a 7mm Bushing, Until 7 PRC Dies hit the Shelves (=14%) but I'm not an Expert or a Gunsmith - . (Short Action -08, Standard Action -06, Long Action -RUM)

There's no reason you should get short barrel life from the 7mm/375 Ruger or PRC case unless you're shooting it insanely hot and at max velocity.

I have STW's approaching or exceeding 2000 rounds down the tube with better than half their usable throat remaining.

Something doesn't add up here because the shorter, fatter cases with slow powders should make for much better, not worth barrel life.

 

[Buttermilk]

IMO, for what it's worth, & that's not much... Decide what Bullet you want to Shoot 1st. Then choose the Case. You can shoot the 162 ELD with an 08 based 7mm. Every person I have seen posted who built a 7mm-375 Ruger swore they would not do it again do to Short Barrel Life. 7-SAUM also can have a very short Barrel Life. 7-6.5 PRC is not off the Shelf AMMO as of yet. Seems you want a 284 off the Shelf or Wildcat the 6.5PRC. / Oh and I'd like to Add: 7-6.5 PRC can be easy for you if you CAN use the 7-Rem SAUM Die set on 6.5 PRC Brass & have your Gunsmith use a 6.5 PRC Reamer with a 7mm Bushing, Until 7 PRC Dies hit the Shelves (=14%) but I'm not an Expert or a Gunsmith - . (Short Action -08, Standard Action -06, Long Action -RUM)

The 6.5 PRC case isn't the same diameter as the SAUM case. The SAUM case is larger body with 0.550" body diameter, while the 6.5 PRC and the 300 PRC both have a body diameter of 0.532". This precludes using SAUM dies for reloading purposes. The 6.5 PRC case is based on the 300 RCM case, but slightly shorter case length (2.030" vs. 2.100" for the 300RCM).

 

[IHFarmer07]

The 7PRC will almost certainly become standardized very soon.

I prefer the .375Ruger case but there's very little practical difference between the two. My preference is more due to my abundant .375Ruger brass supply since I shoot two of them.

With the PRC if you build it on a long action you'll be set for life, the bullets won't get long enough in our lifetimes for you to run into magazine or feeding issues.

So there is going to be a 7prc? What kind of specifications does it have, based off of, grains, ect...?

 

[Hand Skills]

The RCM has been on the market for 10years. Yes the PRC is new, but the idea of necking a 300rcm up or down is not.

I'm curious about the RCM case also. The idea of +1 in the mag is attractive (compared to saum/WSM). I bet they are easier to get to feed reliably without the rebated rim also.

The main downside I see is proprietary brass. Hornady is the only source.

I don't have much experience with Hornady brass yet. Acquired some for a 280 im playing with, and curious to see how many loadings I can get out of it. Out of the bag I culled close to 10%.

Fact is, it's hard to do a short mag on the cheap. Especially if you have to buy your own reamer for your own wildcat. This is a pipe dream for someone who does not reload.

To me it sounds like you might be getting ahead of yourself. I think it's a good idea to do some load development, load a few hundred rounds for something you already have. Get a feel for the process before you entertain custom reamers and custom dies.

It will be interesting to see how many competition shooters ditch their 6.5x55's and 6.5x284's for the PRC. I don't think many will. The biggest difference is when it comes to purchasing loaded ammo.

What tickles me the most when it comes to action length is how Mauser got it right over a century ago!

 

[IHFarmer07]

The RCM has been on the market for 10years. Yes the PRC is new, but the idea of necking a 300rcm up or down is not.

I'm curious about the RCM case also. The idea of +1 in the mag is attractive (compared to saum/WSM). I bet they are easier to get to feed reliably without the rebated rim also.

The main downside I see is proprietary brass. Hornady is the only source.

I don't have much experience with Hornady brass yet. Acquired some for a 280 im playing with, and curious to see how many loadings I can get out of it. Out of the bag I culled close to 10%.

Fact is, it's hard to do a short mag on the cheap. Especially if you have to buy your own reamer for your own wildcat. This is a pipe dream for someone who does not reload.

To me it sounds like you might be getting ahead of yourself. I think it's a good idea to do some load development, load a few hundred rounds for something you already have. Get a feel for the process before you entertain custom reamers and custom dies.

It will be interesting to see how many competition shooters ditch their 6.5x55's and 6.5x284's for the PRC. I don't think many will. The biggest difference is when it comes to purchasing loaded ammo.

What tickles me the most when it comes to action length is how Mauser got it right over a century ago!

That's another reason why I think the 6.5prc is what I'll do(how many rounds fit into mags, floor plates), unless something else pops up in the mean time.

Yeah your right on me getting ahead of myself but it's fun to dream of doing these sorts of things! If only I could win the lottery!

Germans are brilliant!!

 

[Wild Monkey]

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[Wild Monkey]

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[Buttermilk]

Thanks for stating the obvious. It does not preclude anything. You use the 7-SAUM to set the neck location, if the OP wanted to. You do realize there are Wildcats out there with no Dies right? It's actually possible to chamber a Rifle and fire it over and over without having the exact die set, you do know that right? You only need to be able to bump the Shoulder and set Neck tension.

I'm quite aware.... I've done a few wildcats that didn't have readily available dies and used other die sets to do what I needed to.