Wondering if anyone on this forum has one. If so, what model rifle?
Whats the "range report" on it....recoil, accuracy, etc...
Thanks in advance!!

I've got a Rem700 LSS 26" factory rifle, and a CZ 550 with a 23" barrel.

Factory ammo is just over 2800 fps with the 300 grain Swift A-Frame.

Accuracy is sub-MOA out to 300 yards.

Recoil is moderate, not bad.

Use Saeed's .375/404 data, it is almost identical, both are very close to 120 grains of water case capacity. So is the .375/.338 Lapua Magnum, also known to the Germans of 2001 as the 9.5x69mm Tornado.

Don't buy the Winchesters....The mag well is not long enough to allow for any experimentation of bullet depths for optimal accuracy....The CZ is the best bet.

Jeff

I have an HS Precision Prohunter 2000. It is equipped with a muzzle brake and mercury recoil supressor. 2850 fps with Remington 300gr Swift A-frame loads. This rifle always shot sub moa until this year, back to HS for diagnosis of an accuracy problem (see postings under gunsmithing).
The recoil is stiff off a bench, but not otherwise unpleasant. Think of it as a stopper with a 3006 trajectory. Pretty versatile for a one gun safari, if the brake doesn't put people off.

Jeff,
Good point.
Saeed could not fit the Walterhog into his magazine if it was not of Rigby length. The Walterhog has a long nose, just like its papa.

I have a CZ 550 Magnum chambered or rebarreled for each of these:

.375 Weatherby
.375 RUM
.375 Lapua (WIP)

They all have the same throat as the .375 Weatherby (new version): 0.3750" freebore and 1 degree 2' leade. This is done with a special neck and throat reamer from Dave Manson.

This is long enough throat to fully utilize any bullet quite well, and the extra powder space due to seating bullets out another 0.200" can be a very interesting proposition.

For reference, Clymer says the .375 RUM throat is 0.1750" freebore and 1 degree leade.

The new .375 Weatherby throat has 0.2000" more freebore than the .375 RUM. Bingo.

CMR,

I've a REM 700 BDL LSS 26"---wonderful caliber! As you see I said "caliber", this is for the purpose of large and dangerous game here in my world, I made an error in judgemnt when I purchased it. I did not think of CRF -- you may want to look at built MRC or buy a CZ and have a smith work it over a tad - you will be assured of a good positive action---my Rem is very accurate to boot but I should have bought...............good luck

Mine on a M70 Stainless formerly in 375H&H. You can get lucky with the accuracy even with the 3.60 max COL magazine.

These with the firts trial loads of 350gr Woodleighs.

Regards
JohnT

As some of you know my hobby in internal ballistics and I picked up a Rem 700 laminated SS 365 RUM last year for experiments with sabots. I liked the caliber so much that I retired it from the lab and had a Vais muzzle brake put on, with the barrel cut to 24.6 inches to keep the overall length with the brake at 26 inches. I had it bead blasted and added a black Sendero stock, Answer Products recoil pad and Leupold vari-X2.

The 1.4 inch bbl trim costs about 42 fps with slow powders like IMR 7828 and nothing once you get to H4350. The 7828 still gets 2923 fps at 63,500 psi with Sierra 300s and the 4350 has pushed the 225 gr Hornady to 3318 fps at 62,000 psi. The former load reciols about like a factory 338 Win Mag and the latter like a 270.

The weights in between all manage 5600 to 5700 FPE as 65,000 psi is approached and the recoil increases proportionately to bullet weight.

The Vais brake is probably the quietest brake out there and it is not noticably louder to bystanders than the old 26 inch bbl. 1 to 1.5 MOA can be found from the bench with the right powder for any bullet selected so far. The wrong powder and charge weight can open things up to 3 MOA, and the best groups are usually 3 to 4 grs under max with bullets 260 to 300 grs. H and IMR 4350 near max are best with the lighter bullets. Top velocities at pressures in the 53,000 to 55,000 psi range can be had with Mag Pro and 1.75 MOA. This is a good choice for hot climates and DG as it takes a lot of heat to run them up to the SAAMI limit of 65,000 psi.

The best all around powder for this rifle is definitely H4350 as it not only works well for all bullet weights, but seems to love 60,000 psi for accuracy while still giving 5400 FPE with each of 6 different bullets tested. Sine it is an Extreme powder and the pressures are sane, it will take a lot of heat or cold to alter velocity and POI.

The expansion ratio is very close to the 338 Winnie, so you can shoot at 60,000 psi for the rest of your life and not need a new bbl.

I have a pile of reduced loads using H4895, IMR 4064, R15 and AA5744 that mimic the 35 Whelen, 338 Win and 375 H&H, but I won't bore you with them here. Again, the right powder and charge weight will put you into the 1 to 1.5 MOA category with all of these reduced loads, but you need to keep the COL as long as possible with the shorter bullets.

Balistically, the 375 RUM is about as good as you can get if you hand load and want to cover the 35 Whelen to 416 Rem spectrum with one rifle and do it well. However, one needs to get it in a CRF and improve ammo availability for Africa or Alaska. The 375 H&H is still a better choice given these shortcomings.

But if you don't have an H&H and CZ or somebody starts chambering the 375 RUM in CRF, its a better choice than the H&H IF you handload. It might replace a 416 REM or Rigby for DG, or at least compete with them if you fill her with Mag Pro and stuff in a 350 gr Woodleigh for 2700 fps. Still, a 416 400 grainer at 2400 fps has the majic, so I don't expect many would go the 375 RUM route with a 416 in camp.

It is easy enough to lenthen the magazine on a M-70, I don't see that as a minus...Saeed shoots the M-70 action Dakota knockoff and it is .375 length, does it have a longer magazine than is daddy?

At any rate it is a heck of a caliber and kills buffalo quite well....

Ray,
The Dakota 76 comes in four different lengths:

K action or short
Standard (.30-06/.458WM length)
Long (.375 H&H length)
Magnum (.416 Rigby length)

Saeed cannot load Walterhogs in the magazine of the .375/404 unless he has the Rigby length box with the .416 Dakota bolt face comprising his action. The Walterhog long nose and driving bands and ogive locations are such that there is no other way but a box longer than standard .375 H&H.

He would have used an action meant for the .416 Dakota, not the .416 Rigby. Same length action with different bolt faces.

I have an H&S takedown in 375 RUM. With factory Remington Swifts it is deadly. It is going to be getting a Vais recoil reducer shortly. It seems to me to have quite a bit more recoil than a 375 H&H. I love the takedowns for travel. I have a companion 300 Win takedown that is also very handy. Be sure to stick to tough premium bullets in the RUM. That velocity at short range with some bullets can cause problems. The Swifts work like magic!

I have shot lion, leopard, buffalo, and lots of plains game with a Wiseman .375 RUM. It's accurate and hits hard.