7mm300RCM Opinions

[IHFarmer07]

Wouldn't this work....I mean doesn't everyone assume that a AICS box mag will be used? Who's to say I want use a box mag, just use this instead, that way I can get a decent COAL. This rifle will be dual purpose, hunting/long range shooting rifle. Would this not work?
http://pacifictoolandgauge.com/remi...num_black/1143-choose_magazine_box-3_b_bainey

 

[IHFarmer07]

Hey guys I just PMed a guy with a tikka t3 action.....how would that work with the 6.5prc? I don't know much about them but had heard great things about them and have handled one and I like them from what I had seen/felt of them. I know I'd have to get a mag bolt for it but just thowiythat out there, I honestly don't see these for sale much so that tells me something there.

 

[WildRose]

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

Haven't seen it yet but looking at their marketing strategy and what Nosler did with their new case I can't see them not doing it.

My guess is that it will be very similar to the 7lrm but with a shorter neck to allow for a bit more case capacity and probably either a 30 or 32.

I've seen some guys toss drawings around on other sites but can't speak to where they came from or how reliable any would be.

For me I'd go with either a 7LRM or just a shorter necked/higher capacity 7mm-375 Ruger if I just wanted something in this class although both come with limitations.

I think I may have worked out an easy and inexpensive way to convert as much of my .375 brass as I want to other calibers and the factory stuff is cheap and widely available.

Best news is I've talked to a couple of other good brass manufacturers recently who may start giving us a good new source of improved brass over the hornady.

 

[WildRose]

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!

You know I"m just not one who's ever seen the problem with rebated rims chambering properly in either my RM's or M70's. As long as the feed lips are right along with the feed ramp I can't see where it even should create an issue.

Of course most of mine admittedly are CRF's with the exception of the few Remingtons.

 

[Hand Skills]

I haven't heard of any problems with the RUMs, but I've seen a couple of WSM's that were challenged though.

Relaxing the follower spring helped one. Personally I think reported feeding challenges have more to do with short fat cartridges than rebated rims. Thanks for pointing that out though, and agreed, nothing inherently wrong with a rebated rim.

 

[WildRose]

I haven't heard of any problems with the RUMs, but I've seen a couple of WSM's that were challenged though.

Relaxing the follower spring helped one. Personally I think reported feeding challenges have more to do with short fat cartridges than rebated rims. Thanks for pointing that out though, and agreed, nothing inherently wrong with a rebated rim.

I think like with most things it's usually a combination of user error and improper machining.

I did have a Rum that was an issue, found out it was just a rebarrel on a .300wm. He had the right follower but hadn't opened up the feed rails quite enough and the machining on the feed ramp wasn't well polished.

About 10 nervous minutes with the dremel and the whole problem was solved.

Admittedly I have next to no experience with the WSM, RSAUM, or WSSM's but certianly am aware lots of people had issues with the short little fatties.

For some reason I don't remember that ever being an issue though with the 6.5RM even though it came with that evil belt!

Funny, just doing some looking I'm now reminded of the 350RM which also seemed to feed well despite it's nasty old belt and short fat body, HA~

 

[the hunter]

I haven't heard of any problems with the RUMs, but I've seen a couple of WSM's that were challenged though.

Relaxing the follower spring helped one. Personally I think reported feeding challenges have more to do with short fat cartridges than rebated rims. Thanks for pointing that out though, and agreed, nothing inherently wrong with a rebated rim.

Going by Nosler's charts the 7mm RUM with the right load can go out to 2,000yds.

 

[WildRose]

Going by Nosler's charts the 7mm RUM with the right load can go out to 2,000yds.

You can get to 2000yds with a lot of them. Dong it with any consistency and having enough energy leftover for clean one shot kills gets us into a whole nuther realm.

There just aren't any 7mm's with a high enough BC to be reliable at all much beyond 1,500yds.

 

[IHFarmer07]

Ok guys just for clarification on this.....I know several people said go long action because the coal is better, now is that because of the LA magazine coal?

Now as I posted at the top of page 3, ptg makes an internal magazine that accepts coal of 3.110 or so for a short action, now what I'm hoping that some of you can clarify to me (I understand some would do a long action but that is not what I want because a big horn action in long action is like $1400 and the origin is at the most $900.
I want a big horn because I can change bolt faces.....now the only other thing I can do is get a trued rem long action but then there is only one place to get pre fit remage style barrel .010 over and I'd have to buy a bolt for every time I want to change bolt faces, at about $300 a pop) the reason I want remage options is because I can do the work myself without sending stuff out for months on end and I just enjoy working with this all!

Can the short action(Remington and big horn) function with ptg's 3.110 COAL bottom metal with cartridges loaded to about that length????

 

[Sniper97]

Haven't seen it yet but looking at their marketing strategy and what Nosler did with their new case I can't see them not doing it.

My guess is that it will be very similar to the 7lrm but with a shorter neck to allow for a bit more case capacity and probably either a 30 or 32.

I've seen some guys toss drawings around on other sites but can't speak to where they came from or how reliable any would be.

For me I'd go with either a 7LRM or just a shorter necked/higher capacity 7mm-375 Ruger if I just wanted something in this class although both come with limitations.

I think I may have worked out an easy and inexpensive way to convert as much of my .375 brass as I want to other calibers and the factory stuff is cheap and widely available.

Best news is I've talked to a couple of other good brass manufacturers recently who may start giving us a good new source of improved brass over the hornady.

Which manufacturers? Are you saying someone is going to make 7lrm brass other than hornady? Thanks!

 

[WildRose]

Which manufacturers? Are you saying someone is going to make 7lrm brass other than hornady? Thanks!

No, that's doubtful but several others have expressed interest in producing the parent .375 Ruger and couple seem to be moving in that direction fairly rapidly.

I will be surprised if we don't have multiple sources in the next couple of years as popular as the case is becoming for the original and variants.