Does anyone have a favorite long range load for deer in the 300wby? I'm leaning towards a premium bullet in 150 or 165 grain range. Thanks in advance

In a word "NO". Even with premium bullets in the 150 to 165 gr range the velocity possible with the 300 wby makes a terrible mess and waste of meat on any shots under 200 yds.I would suggest you look at a good 180 gr bullet and push it with a healthy dose of 7828. Start at about 80 grs and work up to approx 85 grs watching for signs of excess pressure. That should give you very close to 3200 fps muzzle velocity.You will not be lacking in trajectory or terminal energy.

Snowman has it right, I think. I use a 180 gr Partition over 82.0 gr of IMR-7828 as my only load for my Remington 700 in .300 Wthby. Everything I've shot with it has died quickly and with only 1 shot needed at ranges from 25 yards out to 400. Work up to that load, as rifles in this caliber seem very picky. My friend can use 85.0 gr of the same powder with the same bullet, but I get hard bolt lift and ejector marks on the case if I try that load in my gun. The only lighter bullet than 180 gr I would consider would be a Barnes X in 165 gr, I think.

180grain Nosler Partition. 81.8gr Norma MRP, Fed 215 primers .5" MOA MV 3230 +/- Can't ask for more than that! jorge

Thanks for the suggestions. My other primary rifle is a 340wby that I shoot 210 partitions with. This rifle shoots so well, I've actually used it for deer hunting the last couple years. There is little trajectory difference between 180 partitions in the 300 and 210 in the 340 as velocity in both chrono about 3250. My hope was to come up with a good shooting lighter bullet for long range mule deer hunting that would shoot flatter. While I'm the first to admit that a few inch flatter trajectory doesn't mean much, it is still the basis for a winter reloading project! This last month, I've shot 165 triple shocks, 165 partitions, 165 speer spire points, 165 ballistic tips and 150 lazzerheads (a modified triple shock). All were shot with RL 22. None would shoot better than 2 moa. I thought I'd try some RL 19 and MRP next. The 150 lazzerheads are particularly interesting witn a b.c. of .428 and the slick surface that is electroplated to it that is supposed to allow full velocity potential. The owner of Lazzeroni is adamant that they can shoot very accurately at high velocity. (He should know). All of these bullets have proven very accuracte for past reloading projects for a 300 win. The gun shoots factory 165 hornady's into less than moa so I know the potential is there with a lighter bullet. Any other suggestions would be most appreciated. I am using norma brass and federal 215M primers. Thanks.

Well, once again, I am a fan of the 180's in 300 magnums. However, my dad has shot more game than you could imagine with an on old pre-64 Winchester Model 70 that was a 300 H&H.

He had a gunsmith ream it out to 300 Weatherby and has really enjoyed it. That old rifle has no problem reaching 3500 fps with the Sierra 150 grain flat base. He loads a max load of H 4831 in Weatherby brass and Fed 215 primers.

Don't let anyone tell you that 150 Sierra won't work. He has shot clear through damned near everything he has shot with it, from deer to pigs to some damned big elk.

One morning we were in Wyoming hunting with guides on horseback. We had just split up and as my guide and I rode over the next ridge I heard a "WHOP". I told him we had better go back and see what dad had shot. He had not heard the bullet strike, but I sure did. Dad had killed a 30 inch mule deer a hell of a long ways off running like crazy.

Good luck with your project, I personally had real good luck getting 165 grain bullets to shoot in 300 Winchesters, but never a 300 Weatherby, not sure why.

R F

Elkaddict I still think you are going the wrong direction with lighter bullets.In my experience the larger magnums are more consistant with heavier bullets. Inconsistancies usually result in poor groups. Your own results indicate this (2 moa).It doesn't really matter how flat shooting it is if the groups open up so you can't consistently hit a deer sized target you haven't gained anything .Lighter bullets also shed velocity quicker so that by the time you get to extreme ranges the 180 will be traveling almost as fast as the 165s and will actually have more kinetic energy with very little difference in trajectory. You haven't actually defined what you consider as "long range". If you insist on playing with the lighter bullets I have 2 suggestions 1/ if you stay with RL series of powders try a std large rifle primer (NOT magnum). I have found that best accuracy is seldom found using RL powder and mag primers. 2/ I would also suggest you try IMR 4831, H4831 and IMR 7828 with your mag primers.

Snowman

Thanks for the advice. I will try these powderes as well and the standard primer when using RL powders. Given how well the gun shoots with factory 165 loads, I'm hoping I can find something, preferably a barnes, lazzerhead or partition to shoot well. If the results pan out, I'll post them! If not, well there is always those dependable/predictable 180 grain partitions.

Well, I was going to suggest trying the 165 gr. Triple Shock with RL 22, but it seems you've already done that. I'm getting about 1/2 to 3/4 MOA with that combination in my .300 Wby Sako 75. I'd definitely give IMR 7828 a shot with maybe the 180 gr. Nosler Accubond. IMR 7828 has always worked really well for me with just about any 180 gr. bullet. Have you tried the 165 gr. Hornady SST? I've had excellent results with it also. If they make a 165 gr. Interbond version, I'd probably try that too.

I guess you are like me, I also use the 165 grainers in the 300Wby-165gr Hornady Interbond and the 165 Grand Slam's for Elk and Deer. Have used the Interbond since last February when they first came out. I also think Law Dog uses them also- a 165gr Nos-Partition. Imr7828 and H4831-- are good Powder's