I am starting to work up a new load for my .300 Weatherby� I have settled on the 200 grain partition as my test case.

I was going to try my old 200 grain sierra SBT load to see if through some twist of fate it would shoot � 74 grains of IMR4350 shoots .75 groups.

Any thoughts or proven loads out there for this bullet in this caliber that I could start with? All guns are different but it�s nice to start with something.

Thanks.

My load for the 200 noslers is

IMR-7828 82 grains Rem. brass and Win mag primers.

that load will shoot 1 inch and Vel. out of my 24' Vanguard "wal-mart $388" is 3001 Fps.

I hope I get drawn for elk this year, that will be the load that I use.

Jason

Thanks Jason...

Any one tried rr in the 300 weatherby?

first id like to mention that you should try every bullet you can get your hands on if you want accuracy. and powders can be the real key to getting accuracy.. when you get a bullet that gives the same velocity and same barrel whip and etc, etc youll get accureacy.. my opinion in this matter is you will be very lucky if you can get accuracy out of nosler partitions,, my opinion again is that the cross bars caouse irradic pressures or higher pressurses.. for elk i use 180 grain hornady square base spire point for 300 mag or weatherby mag.. i forget the number.. partition bullets are for smaller calibers that the gun was not inteded to be used for on bigger game.. you ,my gess will be get your best accuracy with 180 grain semi heavy jacketed bullet like the hornady.. this bullet is made for elk and will do a nice job on deer.. and my gun shoot 3/4 inch groups with it every fall when i site in.. a good scope is a must.. 200 grain is getting a little long for the accuracy of twist in 300, and 200 grain partition is for bigger game than elk. my opinion only,, and it may give you accuracy problems.. my son was 12 years old when he shot an elk while he (my son was kneeling) at 250 yards with a 100 grain 243 nosler partition bullet.. the rifle was a 788 remington 6mm... it broke its shoulder again at 250 yards.. much, much smaller gun than the 180 300.. the guns shoots 1/2 inch groups with hornady bullets,man what a gopher gun!! and 1 1/2 inch groups with partitions.. we use partitions for deer and elk in it.. it puts down a deer like my 300.. so dont reinvent the wheel here bud.. the homework has been done,,.. hundreds of thousands of elk have been killed with 30-06 and 180 grain bullets.. learn how to shoot that thing laying down, knelling and against a tree,over a rock, out to 300 yards accuratly and youl do fine.. youll find out in a hurry that your shooting ability is the problem, not the gun.. . youll have a coouple minutes on most shots to get set up, range calcualted the best rest avilable, and the elk you want to shoot figgered out.. by then you probably will be detected and they will be gone.. praactice, practice, practice out to 400 yards if you can hit at that range.. and 200 grains will not be as good as 180 ballistics at that range.. rangefinders are great if you have the balistics and can get them computed fast enough.. those elk just dont want to be shot.. good luck dave..

I agree with the recommendation that the highest velicities out of the .300 Weatherby can be gotten using IMR 7828. For 200 grain bullets, I've found that I can use up to 83 gr. of that powder, using Remington or Weatherby brass and Federal 215 primers, and that this will give me 3000+ fps. But that is a quite hot load, so you should start under it and work up.



I've also found that, at least in my rifle, RL 22 tends to give better accuracy, with some loss of top velocity. Recently I've been shooting the Nosler Accubond bullet, and I've found it to give the best accuracy I've ever gotten from my .300 Weatherby. Best accuracy came with 80 gr. of RL22 and that bullet. (I moly coated the bullets, so that must be taken into account). That, too, is a very hot load, producing about 3000 fps, so you should start out below it. I haven't used that bullet on game, but from what others have written about it on this forum, it seems that it may be ideal for large heavy game animals.



I've never been able myself to get very good accuracy from Nosler Partition bullets. Others report otherwise.

When I shot the 300 Wby. I also used the IMR7828 max loading...I can vouch for the 200 gr. Nosler as the hammer of Thor on about anything that walks, talks, breaths or crawls...

I took my Model 70 Winchester in 300 Weatherby to Africa last year and took 8 trophies from duiker to Gemsbok and Kudu. I used the 200 grain Partition based on Ray�s advice and can vouch for the fact that it was a spectacular killer. All one shot kills with distances from 130 to 300 yards. A few had extra insurance shots but were not needed. I did extensive testing of a number of powders such as Reloader 22 and 25, IMR and H4831, Retumbo and IMR7828 before the trip. The IMR7828 consistently gave the highest velocities and accuracy ranged from good (1.5 inches) to great (5/8 inch) for three shots groups. The load I eventually decided on was under maximum because I didn�t want to take any chances of over pressure from warm weather as they were developed in November. The load was: 80.5 grains/IMR7828/200 grain Nosler Partition/Fire formed Federal brass/Federal 215 primers and seated out to maximum magazine length (3.4�) which was significantly off the lands due to the Weatherby freebore chamber. Velocity as chronographed was 3050 fps over about 50 rounds. This load regularly shot into 1.5 inches for 5 shots from a cold clean barrel. I went up to a maximum of 82.5 grains that had some of the best accuracy but as I mentioned decided to stay under maximum to avoid problems in the field. I�d start with IMR7828 and work out from there but I�ll bet you find a good load with the highest velocity. Reloader 22 was the next best in accuracy but yielded about 200 fps less on average. Also do a search in this forum for 300 Weatherby as this was discussed in the past.



Good luck

Paul

I have used 78.0 grains of Reloader 22 in Weatherby cases and Federal # 215 primers.It drove the 200 grain partion to 2820 fps, and it worked well on springbuck to eland.

Thanks for the posts, it looks like I'll want to play with IMR7828. I wish I had the time and money to play with all of the premuim bullets out there but I don't. So if I can't get the NP to shoot I might give the accubonds a try.

Thanks for the help!

83 gr of IMR 7828 or 85 gr of RL 25. Start lower.... your mileage may vary