The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading .375 H & H powder choiceGo | New | Find | Notify | Tools | Reply | |
| .375 H & H powder choice | Login/Join |
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what is considered to be the "powder of choice" for use with 300 grain bullets? | ||
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In my opinion, RL-15. | |||
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I agree with Grumulkin. I have had very good results in both the 260gr accubond and 300gr partitions. | |||
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1st choice Varget.. 2nd Choice Varget.. Can you guess what 3rd choice would be..  MopaneMike | |||
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My rifles like RL-15 with 270 and 300 gr Xs and TSXs. Mike -------------- DRSS, Womper's Club, NRA Life Member/Charter Member NRA Golden Eagles ... Knifemaker, http://www.mstarling.com | |||
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I have worked up loads for two of my buddies who were going to Africa with their 375 H&H rifles and wanted to use 300 grain Swift bullets. The first was a pre-64 Winchester model 70. It shot best when using Varget. It shot nearly as well using H 4350. The second was an H-S Precision rifle and it really came alive when I fed it H 4350. Both of these rifles would just make neat little clover-leaf groups at 100 yards with the 300 grain Swift bullet. Both guys shot all kinds of game in Africa from 6000 pound hippo's to impala with those loads and were quite happy. R Flowers | |||
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RL-19 | |||
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H4350, good balance of optimum velocity and accuracy. You learn something new everyday whether you want to or not. | |||
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RL-15 and the 300 gr tsx my gun loves it!!!!!! You can't kill them setting on the couch. | |||
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RL-15  | |||
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Mine likes IMR4350 with the Barnes 300 grain TSX and IMR4064 with the Nosler 260 grain Partitions Frank "I don't know what there is about buffalo that frightens me so.....He looks like he hates you personally. He looks like you owe him money." - Robert Ruark, Horn of the Hunter, 1953 NRA Life, SAF Life, CRPA Life, DRSS lite | |||
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W760/H414 works for me. BH1 There are no flies on 6.5s! | |||
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Isn't that kinda slow? If yours won't shoot with one of the powders listed (other than RL19), you probably have a gun issue not a powder issue! LWD | |||
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The 2 powders I've used the most of in the .375 H&H are IMR 4064 and Win 760. Both provided all the speed and accuracy one could ask for.  Member NRA, SCI- Life #358 28+ years now! DRSS, double owner-shooter since 1983, O/U .30-06 Browning Continental set. | |||
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H4350 Mike Legistine actu quod scripsi? Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.  What I have learned on AR, since 2001: 1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken. 2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps. 3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges. 4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down. 5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine. 6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle. 7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions. 8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA. 9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not. 10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact. 11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores. 12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence. 13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances. | |||
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I vote for the H4350 with 300gr. bullets (RL-19 almost as good) I can get just over 2600fps with either powder, but H4350 is a bit more accurate out of my Whitworth and less velocity variation with temperature change. RL15 seems to work best with the 250 & 270gr. bullets (my rifle, at least). I've not tried Varget, but will. Mags | |||
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My magnum Mauser is regulated for 270 gr. bullets and IMR-4350 at 75 yards. Shoots dreadfully well. My country gal's just a moonshiner's daughter, but I love her still. | |||
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For my first 300 grain loads in my 375 H&H mag I started and ended with Reloader 15. When I got to 71 grains of Reloader 15 with the Barnes TSX 300 my rifle shot a .5" 3 shot group and I stopped right there. The rifle consistently shoots under 1" and most of the time between .5" and .75". I think this is incredible for a light big bore and I'm really happy with it. I've never "chrony'ed" the loads but frankly I don't really care what the speed is as it is accurate and no pressure signs, I'm staying with it. | |||
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4350 and RL-15 for sure. For pure accuracy and good velocity never overlook IMR-4064. Ray Atkinson Atkinson Hunting Adventures 10 Ward Lane, Filer, Idaho, 83328 208-731-4120 rayatkinsonhunting@gmail.com | |||
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Sorry to say but RL15 has not been a good powder in my M70 .375; poor accuracy and extreme fluctuation in velocity from lot to lot of powder. I prefer Varget; velocity and pressure is where it should be and is consistant from lot to lot of powder, powder is not temperature sensitive, meters through powder thrower well without having to weigh each charge and accuracy is always excellent. Larry Gibson | |||
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LWD Slow? Yes, I guess so. A guy I know from texas uses a 7 stw on pigs under a feeder. Everyone has their own view of things and I dont think any suggested powder on this thread is wrong. Rl-19 is the powder that my rifle and my 300 gr bullets shoot the best. Yes I tried rl-15, but it wasnt as accurate for me with what I was using. My load is 79.0 gr Rl-19 with 300 gr silver tips for 2595 fps. I have no complaints. I do use Rl-15 in 3 rifles, (2) 9.3x62s and a 300 wsm. No complaints with them either. I do not think their is a best powder for 300 gr bullets, I wish life was that simple. | |||
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Many good powders for it but IMR-4064 is still a worthy choice. /////////////////////////////////////////////////////////////////////////// "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." Winston Churchill | |||
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Had real good luck in my .375 H&H with IMR 4350 shooting Hornady 300 Interbonds and A Frames. Excellent accuracy on paper and in the field. | |||
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SG Olds- I didn't mean to imply it's a wrong choice, since I would guess you can't get enough in the case to be overpressure. Do you get decent accuracy with it? The velocity looks good. LWD | |||
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H-414. How's this:  76gr H-414 300gr Swift A Frame Fed 215M primers WW brass. jorge USN (ret) DRSS Verney-Carron 450NE Cogswell & Harrison 375 Fl NE Sabatti Big Five 375 FL Magnum NE DSC Life Member NRA Life Member | |||
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Yep ; I'll add my $.0025 opinion . H414 , Varget , 4064 is what I use in that Bad Boy !. It's more accurate than I can hold to shoot . Bench it and it is under 1.0" almost every time . With any of the above powders . I like H870 which I purchased a bunch of before they discontinued it !. Excellent large Case or magnum powder SLOW BURN !. Best of luck !.  | |||
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LWD No offense taken, I took it that you ment there are powders that will give you higher speeds, which is 100% true. The accurracy is to me incredible. Five shot groups off the bench consistently stay between 1/2 to 3/4 inches at 100 yards. An interesting story is the bullets. About 10 years ago I found these winchester 300 gr silvertips on sale for 15 or 17 dollars per 100 so I bought 1200 when I was putting this 375 together. I tried alot of loads before I found this one. I have never lucked out in getting it right the first time. Anyway I have only 87 rounds left. | |||
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Wow. 5 shot groups like that at 2600 fps is certainly a keeper. What are you going to try for a replacement bullet? LWD | |||
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I don't know. Makes me sick thinking about it. I have one more trip to africa with silvertips then maybe TSXs, I have found them exceptional in my 300wsm (with Rl-15). | |||
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I have some 270 grain TSXs that I haven't loaded yet. The .30-06 just loves the 168s! They will be a lot pricier than the previous bullets. I bought some Hornady 270s to try as a plinking load. Good luck. | |||
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