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hello all, can anyone recommend some load data using IMR 4064 using the 250 SGK? Max speed not sought but good accuracy is! Jeff | ||
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Bluefish, Consider going to Steve Reloading Data Pages - http://stevespages.com/375_1_300.html Steve lists for 250 gr bullets IMR-4064 From 63.1 grains to 74.0 grains. You're likely to find acceptable accuracy at some point in this spectrum - it depends upon your gun. Start low and work-up, always checking for PSI signs...Quickload suggests 76 grs of 4064 will give you ~2875 fps with a 24" barrel at 65,000 PSI. Using a chronograph is very helpful in load development. With 4064 and a 24" barrel I would NOT take the velocity beyond ~2875 fps. Regards, AIU | |||
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LoadBook (Sierra data) shows 63.1 to 71.5 grains. My .375 Wby and faster powders gives poor downrange results with 250-grainers -- speed falls off fast with IMR 4064! RL-15 and 250-grain TTSX's are another matter. IMR 4064 @ 2700 fps (muzzle) dropped from +3" at 100 to -14" at 300 yards. RL-15 @ 2825 fps (muzzle) drops -0- to -3" at 300 yards against +3" at 100, FWIW. _______________________ | |||
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I have good luck using IMR4064 with 300 grain bullets but not with the 260 grain Nosler Partitions. For the lighter weight bullet I use IMR4350 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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Are these just for practice...I had these come apart on pigs out of my 376 steyr Mike 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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well, practice and for whitetail. | |||
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Many of our local gun nuts have been using them on elk for a number of years now and they have all these perfectly mushroomed bullets to show off at the coffee shop after every season...I think they shoot them at about 2700 to 2800 as I recall.. As to Whitetail and the .375 there is no such thing as bullet failure, if they come apart they will tear up a lot of deer meat.. IMO, the 375 is a 300 gr. caliber, and the 300 gr. Sierra is a good bullet for sure..If I want a lighter bullet I would suggest the use of a smaller caliber, but experimenting with different calibers, loads, and so fourth is one of the enjoyments of hunting, and I am as guilty as the worst offenders, in which case all I can say is enjoy.. Ray Atkinson Atkinson Hunting Adventures 10 Ward Lane, Filer, Idaho, 83328 208-731-4120 rayatkinsonhunting@gmail.com | |||
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thanks, ray. as always good info. btw, what happens with the 300 sgk in terms of ballistic flight if they're only going say 2350-2400 fps vs 2500 or more? | |||
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I've had great results with the 260Noslers in my 380PDK. I push then real darn close to H&H velocity. As usual just my $.02 Paul K | |||
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I do not have a 375H&H but I do have a 9.5X57 Mannlicher Schoenauer. The Sierra GK bullets are known for their accuracy & killing capability on soft skinned game. BUT the BIG issue is that they are meant for 2,700 fps muzzle velocity or less. As long as you do not push them too fast, you will get great results. If you push them too fast you get violent expansion & core separation. I used the 225 gr GK in 358 Win with great results on deer. Good luck. JMTBW. "When the wind stops....start rowing. When the wind starts, get the sail up quick." | |||
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I loaded some for a buddy for his 375 H&H to shoot deer with. They shot very accurate in his rifle over 64gr of IMR 3031. DOUBLE RIFLE SHOOTERS SOCIETY | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading 375 H&H 250 sierra gameking loads
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