Any experience with this one? Is this the same as the 375 JRS? JD told me it would take $1500 or more to convert an XP to this caliber. Is there any benefit of the XP's over a big bore Encore?

I already have a Contender in rimfire, 223, 6.5 JDJ and 375 JDJ. I don't think there's anything else in the Contender that interests me. I'm sure this battery covers everything that needs doing but the thought of adding more to the stable is always fun to consider.

Yes, the XP action is stronger than the Encore. I believe the 375 JRS is on a 375 H&H case.

I think you would be better off chambering it for the 376 Steyr!

You can get the JRS in the Competitor which is far less expensive than a custom XP and is just as strong.......might be able to get the 376 Steyr in the Competitor too!

[ 04-07-2003, 05:49: Message edited by: GonHuntin ]

I wondered if you would chime in. I'll chalk that up as one unbiased vote for the competitor!

Yukon,
I would agree with Gonhuntin that A Competitor would be a cheaper route. A more expensive route than the Competitor, but that is cheaper than the custom Xp is an MOA Maximum. It is a falling block action that has interchangeable barrels. I'm not familiar with the cartridges in the 375 caliber, but a 375WSM or 375 WSM Improved in a MOA (MOA can do the WSM cartridges) would be a good consideration. I don't know how close the 376 Steyr is in comparision. The Competitor is several hundred dollars cheaper than a MOA. Just thought I would throw some added confusion in.

xphunter

Nothing to add except the 375 JRS is based on the 8mm Remingtin Magnum, itself a blown out 300 H&H case.

Let's see a new barrel, machining, a reamer, some feed rail work (maybe, some of them will feed 284 brass with no problem). I don't see why this would cost you $1500 unless you're adding a lot of bells and whistles. The 375-284 and the 375 JRS are NOT the same cartridge. As mentioned, the 375 JRS is an improved full length H & H case with a 375 bullet. The 375-284 is a 284 Win case necked up to take 375 bullets. - Dan

I have to admit that the Competitor is tempting. I have shot Mark's gun and it's accurate as he says.

That JRS is interesting. I already have and shoot 375 H&H, 375 JDJ and 8mm mag so that gets me started in the right direction.

Any info on the JRS online?

Yukon Delta

The topic title is XP-100 and the 375/284. JD Jones years ago had a cartridge called the 375 JRS.. "Jones Rhino Stomper", hence the JRS. This was before Jon R Sundra (JRS) came out with his line of cartridges. I would be sure to check if you and JD are on the same track. JD's 375 JRS is not the same as Jon R Sundra's 375 JRS. I could be wrong but I seriously doubt it in this situation.
An XP in 375/284 would be nice though.

As to the high cost for building an SSK XP...what can I say, it's JD Jones.

I don't see where all the money is going unless you have a custom stock, trigger, sights and a trip to the local brothel included.

I have a XP-100 in 284 Win and it was only a chamber job. Going to 375 means a new barrel but that should only be in the $500 range with the finest barrel money can buy AND the action trued.

It would be a rip-roarer with a 16" barrel and a brake to keep the muzzle rise to a minimum.

You basically have a short barreled .375 cal rifle and any or all of the mentioned frames would work but I like the XP-100 action so I would go with it and a rear grip stock so you can get a good trigger installed and not get whacked on the wrist everytime you touch off a round. Of course, there are work arounds for that problem so it isn't really a problem after all.

The ballistics should be near the same as a 338-06/35 Whelen with about 30 fps/inch difference in velocity for the short barrel and a larger diameter bullet. It should take care of anything on this continent withing a reasonable range for a pistol of that nature.

All this said I would just go with a .375 WSM and be done with it. Slightly larger case capacity, factory ammo (maybe) and no screwing around with the brass. I have played with the 284 case from 6mm to 338 cal and dealing with the process of neck size gets to be a real pain in the ass, so now I go with a factory caliber for the most part. Wildcatting is vastly over-rated in this time of the millinium where you can get a factory loading for just about any hole in the continuum but, Hey, have fun and go for the braggin' rights.

Yukon,
Is your XP one of the older center-grips or the newer XP-100R?
With a brake I would still go with centergrip (if that is the kind of XP you have) in a 375 WSM. This is my personal preference--You can get as good of a trigger as you need for hunting with a centergrip style trigger. If a faster lock time is needed you can put a titanium firing pin in. But since this is a hunting handgun I don't see the need to go to rear grip for a better trigger solely. I can see the merit in a rear grip for recoil purposes. An H-S or McMillian stock would go nicely with it. You would have to have your bolt face opened up, but that is not a big deal. Stock and stock work can get expensive, but I would look some other places and do some price comparisons. A smith I use and have complete confidence in for my XP's is Greg Tannel www.gtrtooling.com
Ernie

The JRS of JD Jones is just the 308 (358) case necked up to 375, originally intended for unlimited XP. The Sundra cartridge is the full-length H&H or 8mm mag brass necked to 375 and blown out straight. Not much of an advantage to shoot something of this capacity in a short barrel (Sundra), Probably won't do much more than your 375 JDJ, if it does, the blast and recoil would be quite brisk...

I just got my 673 Remington, so I could have a Magnum bolt face for my XP switch barrels, If you add a bolt release where you can simply remove the bolt, in case you need to unload a loaded round easily, I don't why you couldn't enjoy the pleasure of the 338 rum blowed out to 375, or any future project. Remember others complain about muzzel blast some of us live for it
PICS

[ 04-08-2003, 20:12: Message edited by: Pokerplayer ]

Can someone tell me the difference in case capacity between a 300 WSM and the 300 RUM?

xphunter

Well I have one of these bad boys.I bought mine used off the internet after looking for a year and half.I shot under a 1" at 100yds with the 260gr Nosler BT,but they are no good for hunting.The rest of the bullets shoot anywhere from 1.5" to 3".I am getting 2735fps with the 200gr Serria FB and that is max.2400fps with the 270gr Hornady.Short case life.The 375 JRS that John makes is off of the 8mm Mag case and J.D. does make one the same name but it means Jones Rhino Stopper like someone else said in a earlier post.Doc Rogers who writes for the SIXGUNNER shoots one of these and he calls it a 375/284 and sometimes the 375JRS.When I get my 300RUM XP back and get it going(I got to shoot it 4/03/03 about ten rounds proof testing it)I was thinking of having JD take my 375/284 barrel off and installing a 375RUM on it.any other questions let me know.

Wade

xphunter the WSM is 83.5gr and the RUM 112gr.Hope this helps. Wade

It sounds like we're having about 4 conversations here. I've gotten info on the 375 JRS using cases from the 8 mag, 375 Weatherby, 375 H&H and the 284. Anything I'm leaving out? I've never heard of anyone using Sundra's JRS in a single shot pistol.

So...when you say JRS you are saying JD's version right? Are we sure that Doc Rodger's 375/284 is the same as his 375 JRS because that sounds conflicting to me.

yukon:when i bought my XP in 375/284 SSK I was looking in my old SIXGUNNER for load info and Doc.Rodgers used both of the names for a XP that SSK did in different issues but use the same load data.The names where 375/284 and 375JRS that is where I am getting my info from might be wrong but 54gr of IMR4198 in a 8mm Mag case seems a little light to me.The trick is the that when you see a 375 JRS Magnum as listed in the COTW book #9edtion that is for the JonR.Sundra which is based on the 8mm Mag case.Most people leave off the Magnum name because they have no idea about J.D.Jones cartridges.I hope this helps out.By the way you could go with a 375/06JDJ Encore barrel about the same,I do get a little more out of my XP than I do with my Encore barrel.Bought the 375/06JDJ first because I was having a hard time finding a XP that I wanted.Encore is lighter and eaiser to pack.I have not did anymore load work up in the Encore for awhile been doing the XP,but they will be close but the XP will be a little faster but the Rhino still will not know what hit him with either one.I think the XP is less than 100fps faster on most light bullets but only about 50fps faster with the heavier bullets.I have been getting better case life in the Encore.\

Wade

anyone want a Compitetor. I will let my almost new 22-250 16" barrel go for $425.00
rbartman@dslextreme.com
Rich

You can get a new 16" gun for $465 shipped.