375 Remington Ultra Mag

Chilly Willy

Chilly Willy

CGN Regular
Rating - 98.6%
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Location
Erin, ON
I just purchased a stainless synthetic used Remington 375 RUM here in Ontario. It came with the factory remington synthetic stock which will be removed very quickly and replaced with an HS Precision stock. For those that own one of these...here's a question. Is the full 26" barrel required or what would I loose cutting it down to 24" and adding a muzzel break? Also what reloads might you suggest? I tossing a Leupold VXIII 2.5-8 B&C scope on it with Burris Signature Dual Dovetail rings to get a solid hold.

I figure there ain't a critter alive that I will be under gunned for with this. My 300 RUM does a very nice job with 200 Accubonds...I'm sure that this will drive an 260 grain Accubond well and if not a 270 Barnes TSX. Here's hoping
 
With a 375 bore, it's not grossly over-bore, you shouldn't lose much by dropping back to 24", call it 30-50fps or so, maybe less.

With porting and a brake, a good recoil pad and maybe some weight in the stock (which will help the balance of the gun, too), this should be a hella-fun gun :D It's close to the 378wby, which has a reputation for being one of the more abusive cartridges out there, so some form of recoil management is called for.


I want one :) :)
 
Chilly, if I am not mistaken Boomer has a 375 RUM that has a chopped barrel. I dont' think that you will lose alot of speed at all. At the worst, you coudl end up with 375 H&H velocities, not a bad place to be.;)
 
Badass is right! over 4000 ft/lbs of energy @ 100 yards with a 260 AccuBond at 2900 fps @ the muzzel...WOW. Now all I got to do is get a muzzel break on this animal quick and get some glass arranged then it could be taking a trip to Quebec Moose hunting with me this year. I would be really interested in the TSX load for this in 300 grain but is penetration really an issue????? The idea of hauling around 28 inches or barrel on a magnum receiver really isn't all that interesting so if I took 2 inches off and replaced that with the break it would still be at 26...put loss in volocity .....hmmm is it worth it???

What would the range be like for this beast....I'm thinking out to 300???
 
300?!? The '06 can kill a moose at 300!


I'd say 700+ yards, depending on the BC of the specific bullet used.

Ballistic Coeff: 0.400
Bullet Weight: 270
Velocity: 3000
Target Distance: 223
Scope Height: 1.500
Temperature: 70
Altitude: 2500

Ballistic Data
~~~~~~~~~~~~~~~
Range Elevation Velocity Energy ETA Drop Max Y 10mph Wind Deflect
0 yds -1.50 in 3000 fps 5395 fpe 0.000 sec 0.00 in -1.50 in 0.00 in
25 yds -0.25 in 2946 fps 5203 fpe 0.025 sec 0.12 in -0.57 in 0.04 in
50 yds 0.75 in 2893 fps 5016 fpe 0.051 sec 0.49 in -0.47 in 0.14 in
75 yds 1.50 in 2840 fps 4835 fpe 0.077 sec 1.12 in -0.31 in 0.35 in
100 yds 1.97 in 2788 fps 4659 fpe 0.104 sec 2.03 in -0.08 in 0.66 in
125 yds 2.15 in 2736 fps 4489 fpe 0.131 sec 3.21 in 0.23 in 1.05 in
150 yds 2.05 in 2686 fps 4323 fpe 0.159 sec 4.69 in 0.62 in 1.54 in
175 yds 1.65 in 2635 fps 4163 fpe 0.187 sec 6.47 in 1.10 in 2.11 in
200 yds 0.93 in 2586 fps 4007 fpe 0.216 sec 8.55 in 1.66 in 2.76 in
225 yds -0.09 in 2536 fps 3856 fpe 0.245 sec 10.95 in 2.31 in 3.50 in
250 yds -1.48 in 2488 fps 3710 fpe 0.275 sec 13.71 in 3.07 in 4.37 in
275 yds -3.17 in 2439 fps 3567 fpe 0.305 sec 16.77 in 3.92 in 5.27 in
300 yds -5.24 in 2392 fps 3429 fpe 0.336 sec 20.22 in 4.88 in 6.31 in
325 yds -7.71 in 2345 fps 3296 fpe 0.368 sec 24.06 in 5.97 in 7.49 in
350 yds -10.58 in 2298 fps 3166 fpe 0.400 sec 28.31 in 7.17 in 8.79 in
375 yds -13.88 in 2252 fps 3041 fpe 0.433 sec 32.98 in 8.52 in 10.22 in
400 yds -17.61 in 2207 fps 2919 fpe 0.467 sec 38.08 in 9.99 in 11.77 in
425 yds -21.78 in 2162 fps 2802 fpe 0.501 sec 43.63 in 11.62 in 13.44 in
450 yds -26.41 in 2117 fps 2688 fpe 0.536 sec 49.63 in 13.39 in 15.22 in
475 yds -31.50 in 2073 fps 2577 fpe 0.572 sec 56.09 in 15.31 in 17.11 in
500 yds -37.06 in 2030 fps 2470 fpe 0.609 sec 63.02 in 17.40 in 19.10 in
525 yds -43.26 in 1987 fps 2367 fpe 0.646 sec 70.59 in 19.69 in 21.33 in
550 yds -49.75 in 1944 fps 2266 fpe 0.684 sec 78.46 in 22.11 in 23.50 in
575 yds -56.90 in 1902 fps 2169 fpe 0.722 sec 86.98 in 24.74 in 25.89 in
600 yds -64.74 in 1861 fps 2076 fpe 0.762 sec 96.19 in 27.61 in 28.50 in
625 yds -73.27 in 1820 fps 1986 fpe 0.803 sec 106.10 in 30.72 in 31.30 in
650 yds -82.52 in 1781 fps 1901 fpe 0.845 sec 116.72 in 34.09 in 34.29 in
675 yds -92.49 in 1742 fps 1818 fpe 0.888 sec 128.07 in 37.71 in 37.46 in
700 yds -103.20 in 1703 fps 1739 fpe 0.932 sec 140.15 in 41.60 in 40.79 in
725 yds -114.65 in 1665 fps 1663 fpe 0.977 sec 152.97 in 45.76 in 44.29 in
750 yds -126.86 in 1628 fps 1589 fpe 1.022 sec 166.55 in 50.20 in 47.95 in
775 yds -139.83 in 1592 fps 1519 fpe 1.069 sec 180.90 in 54.94 in 51.74 in
800 yds -153.57 in 1556 fps 1451 fpe 1.116 sec 196.02 in 59.97 in 55.68 in
Click to expand...
 
Yup I hear ya.....its getting cut down to 24" then having a muzzel break installed, indexed and bead blasted and contoured the same as the barrel for a total length of 26"

Anyone have an LSS stock for sale????
 
For long range moose, Id rather have a fast 338. For close up thump, hard to beat a 416

375s just dont do much for me. ​
 
Chilly are you going to use it for coyotes and groundhogs?
I am thinking that it should be perfect as a long range varmint rifle... it will buck the wind like a Greyhound bus full of Blue hairs going to the Casino.
I wouldn't waste a lot of money on glass for it either... about 2 inches of eye relief will be plenty... Just wait for me to turn on the video camera before you touch it off> K?
 
Were it me, I wouldn't be packing that much rifle in dense brush. If you're bucking shrubs that deep, I prefer a lever gun in .45-70. Keep the .375 Ultra Bruiser Mag in her long state. If you wanted H&H velocities, get an H&H. They feed a little more reliably, anyways.

That's my 2 cents. Please don't violate her, by cutting her up like that... lol
 
I'm duplicating .375 H&H velocities with my 21" barreled Ultra, with bullet weights up to 300 grs. I'm staying about 1 gr. below max with most loads, as that extra grain has not given much of a velocity boost. I'm about 70 fps faster than the advertised .375 H&H velocity with the 380 gr Rhino's. I did not see an advantage loading with slow powders (7828 and 4831), and I'm now using H-4350 exclusively. I found that the 260 gr Nosler Ballistic Tip was very accurate, flat shooting, less explosive, and pleasant to shoot when loaded to only 2600. For North American game, I will probably be using the 300 gr TSX almost exclusively, although I'm still packing 380's for bears, and they are what I would like to use if I ever get a chance at a bison. Speaking of bears, the DNR boys darted one here a couple of weeks ago that weighed in at 1450 pounds.

I have not had any feeding issues with my 602, and if I did I would of taken steps to resolve the problem.
 
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hey thanks boomer! From what I figure I will loose about 80 FPS from the 3000 fps mark that a 26" tube delivers and still have a 26" overall tube length once the break gets fitted. I am looking forward to getting everything together and get sending 300 grainers to Redd's steel....should make for some real good satelite dishes....
 
Why do you need a brake?

a 375 RUM should punch back about as hard as a 416 rem, (which isnt out of this world) ​
 
I'll add my vote to that. Get the rifle set up so it fits you well, with a good quality pad and with the barrel cut to length you want, then shoot for a while. If you still think you need the brake after doing some shooting you can always get it then. When I first got my rifle it only weighed 7 pounds, and the first round put a big smile on my face. It felt like a powerful rifle, but was in no way painful or unpleasant to shoot off hand, and it wasn't long before I was shooting it prone. My son-in-law found it a little strong for that, but it didn't intimidate him to the point of flinching. I think too much is made of this business of recoil anyway. With the cartridges most of us are likely to be exposed to, a well designed stock which fits the shooter well is probably all that is required to mitigate recoil for the average male adult. It is not really important to fire long strings with a powerful rifle, so the key is to take a break when you've had enough. With some rifles, 3 shots prone is my limit, but with the heavier McMillan stock now on this .375 I can hold it for 5. The point is, you might be surprised with how well behaved this rifle will be. You might want to put an adapter behind the trigger guard to prevent wrapping your middle knuckle when the rifle recoils, but again, shoot it first and address the problems as they arise.

Another point to consider is the position of the scope. You do not want to get hit with a scope mounted too far back on a powerful rifle. The ocular lens should never extend behind the cocking piece of the bolt - some say in line with the rear of the trigger guard. This might limit the magnification you can get a good sight picture with, but I'm sure you could still use a 2-7X. I have a 2.75X Scout Scope on my rifle, but I also have a conventional 1.75-6X I can put on it if I ever feel the need, but thus far I haven't.
 
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