300 Win Mag Loads ?

Stillwater165

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Just purchased a new Weatherby Mark V Hunter in 300 winny with a 26 in barrel. Anybody on here shoot one of these ? Looking for some load ideas for elk ? Haven’t hunted them in many years nor have I loaded any 300’s in many years. Last elk I killed was in 97 with my old Winchester Laredo……. and that boat anchor has been a safe ornament since !
 
If you're shooting under 500 yards you can't go wrong with the Nosler partition. beyond that range it gets more complicated.

I have a Mcmillan Dynasty and a custom in 300 win mag and I shoot 180's at just under 3200 fps with 77.0 gr of RE22 out of both of them. 24" barrel but both have a 1-12" twist. yours is probably a faster twist so you would have to back that load off.

I have had best results with RE22 and 7828. but there are lots of powders that work well .
 
I was thinking along the line of Partitions or something Barnes…… not a long range guy whatsoever. Never shot or even shot at anything over 450 that I can recall.
 
Nosler trophy grade 180gr. Accubond has proven super accurate in many 300 win mags I have tinkered with through the years.
 
Give the partition a try , it's been the gold standard of big game bullets for 75 years and it will be for the next 75.
Kinda figured plenty were still using them, dad always loaded those back in the day ! Don’t have any around but I’m sure I can round some up 👌
 
In regards to the Accubond suggestions, years back I loaded some 140’s in my 264 win mag. Took a mule deer with one. I wasn’t overly impressed, ended up shooting him twice. Both shots were behind the shoulder, basically a little hole in and one out. Not enough critter probably…… or I shoulda took him in the shoulders.
 
Partitions are usually easier to find, they're not a bullet most people shoot 1000's of.

You can check with the Nosler Pro shop, they sell #1's but seconds are usually half price. imperfections are just cosmetic I've been buying them for years.
 
I'm having great luck with 75g of H4831SC pushing a 200g ELDX. I'm getting right at 2900fps out of a 22 1/2 inch barrel.
 
I've shot over 700 head of game with a .30-06 using standard 180gr PSP ammo from various manufacturers over the course of a short period. Had RCBS rechamber for .300 Win Mag and never looked back. This gun a 1958 barreled action pre-64 Mdl 70, bedded in the very first Chet brown fiberglass/carbon fiber stock still is sub MOA and digests Hornady Superformance 180 gr. Interbonds (discontinued) or SST's at 3140 fps all day long. Both bullets have a ballistic coefficient of .480 and perform well. Gun zeroed @ 300 yards. 11 inches low @ 400, 23 inches low @ 500. I've killed out to stupid distances of over 1400 yards (deer), elk to 720 yards and everything in between. Not all barrels will eat all loads the same. Explore a few brands and loads all around the same grain weight until you find what your gun likes. Enjoy the journey...
 
I've shot over 700 head of game with a .30-06 using standard 180gr PSP ammo from various manufacturers over the course of a short period. Had RCBS rechamber for .300 Win Mag and never looked back. This gun a 1958 barreled action pre-64 Mdl 70, bedded in the very first Chet brown fiberglass/carbon fiber stock still is sub MOA and digests Hornady Superformance 180 gr. Interbonds (discontinued) or SST's at 3140 fps all day long. Both bullets have a ballistic coefficient of .480 and perform well. Gun zeroed @ 300 yards. 11 inches low @ 400, 23 inches low @ 500. I've killed out to stupid distances of over 1400 yards (deer), elk to 720 yards and everything in between. Not all barrels will eat all loads the same. Explore a few brands and loads all around the same grain weight until you find what your gun likes. Enjoy the journey...

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Bluehair, please verify for yourself. I made a slight 10 fps misstatement, 3130 fps actual. I was working from memory, apologies. See pix below...
Screenshot 2023-12-12 at 9.53.06 PM.png
Screenshot 2023-12-12 at 9.52.40 PM.png


As to Chesterwyo, the meme you posted is best interpreted by you, words are often clearer and much appreciated. Websters offers a source for those wishing to express a specific comment.
Doc Holliday: "Why Chesterwyo, whatever do you mean? Maybe facts are just not your game. I know! Let's have a spelling contest!
Love the many applications of that line...
 
Bluehair, please verify for yourself. I made a slight 10 fps misstatement, 3130 fps actual. I was working from memory, apologies. See pix below...View attachment 129211View attachment 129212

As to Chesterwyo, the meme you posted is best interpreted by you, words are often clearer and much appreciated. Websters offers a source for those wishing to express a specific comment.
Doc Holliday: "Why Chesterwyo, whatever do you mean? Maybe facts are just not your game. I know! Let's have a spelling contest!
Love the many applications of that line...
Facts and absolutes are my forte. So I’m happy to oblige. A cursory glance at the most rudimentary ballistics program I have access to reveals that at 1400 yards you are 713 FPS under the minimum impact velocity for reliable bullet expansion with the Hornady Interbond, and 318 FPS with the Hornady SST. At that distance, those numbers are not insignificant. You frequently espouse on these forums how modern day hunters have lost interest in familiarizing themselves with their weapons, and abilities of such to get game killed. But you brag about shooting deer at ridiculous distances with what is essentially a full metal jacket. But please, continue to drone on about your “abilities” and “experience“ in such matters while you blow the dust off of a box of antiquated factory ammo and recite it’s effectiveness because it “says so on the box”
 
Facts and absolutes are my forte. So I’m happy to oblige. A cursory glance at the most rudimentary ballistics program I have access to reveals that at 1400 yards you are 713 FPS under the minimum impact velocity for reliable bullet expansion with the Hornady Interbond, and 318 FPS with the Hornady SST. At that distance, those numbers are not insignificant. You frequently espouse on these forums how modern day hunters have lost interest in familiarizing themselves with their weapons, and abilities of such to get game killed. But you brag about shooting deer at ridiculous distances with what is essentially a full metal jacket. But please, continue to drone on about your “abilities” and “experience“ in such matters while you blow the dust off of a box of antiquated factory ammo and recite it’s effectiveness because it “says so on the box”
How dare you? He's killed over 700 head of big game, he said so right on the internet.
 
Bluehair, please verify for yourself. I made a slight 10 fps misstatement, 3130 fps actual. I was working from memory, apologies. See pix below...View attachment 129211View attachment 129212

As to Chesterwyo, the meme you posted is best interpreted by you, words are often clearer and much appreciated. Websters offers a source for those wishing to express a specific comment.
Doc Holliday: "Why Chesterwyo, whatever do you mean? Maybe facts are just not your game. I know! Let's have a spelling contest!
Love the many applications of that line...
The title of the thread was asking for recipes. I was hoping you’d share yours. I‘ve been shootin a 300 for about 40 years, so always interested in faster and better.

Shame about that pre ‘64.
 
This thread is the perfect example of why you should NEVER use a load "recommended" on the internet. And ALWAYS verify with a reloading manual. Start at mid-range and work up watching for over pressure signs.
If self preservation is an instinct you possess, loads need to be worked up over a chronograph. Velocity and pressure are mutually exclusive.
 
To any and all... I'm your huckleberry... Throw your chrono away. Shoot your gun at every expected distance, in every altitude and condition possible. The only subject of clarity is where your rifle places the load you chose every time, not what any ballistic chart says. I've shot with purpose more than a few rifle/ammo combos, and spent a lifetime afield on several continents. The statements I made are not a "brag" just a factual recitation of my personal history. Opinion(s) do not modify the facts. I still don't understand the meme.
Bluehair, the Hornady SF load referenced from my gun has been chrono'd @ 3023 - 3132 elevation and humidity dependent. I really liked the Interbonds, but the SST's are also OK, shoot to same point of aim. I don't reload anymore, simply because I don't shoot enough. Age slows me down. Everything seems to take much longer...
Your .300 is a wonderful platform. I was recently loaned a .300 PRC with all the best bells and whistles. It is a fine weapon/glass combo and the prescribed load is spot on at the dialable distances. The actual flight path and timeline to target is really a rainbow, read as slow... heavier, more stable bullet, impact results may vary - read about the Berger 215 gr hybrid target/hunting round. It is not my cup of tea solely due to long set up time pre shot.
 
One of the most contradictory posts I've ever read. Throw your chronograph away, but my load has been chronographed. Fugg ballistic programs, but my borrowed 300 PRC puts them right on the money with the requisite come ups. I can't run a berger bullet because it takes too much time to "set up" for the shot. But I'll wing one out there at 1400 yards with impunity. Even though the animal would have no inclination that I was even in the same area code at that distance. You are correct in one facet, there's simply no substitute for spent primers when it comes to being proficient with your rifle. As for the 700 head of game, if a person has spent time traveling the world, and been involved in culling operations, that is attainable. So I will yield to you on that. But when it comes to the matter of all things "the rifle" you've some studying to do. Good luck on your sheep hunt.
 
If self preservation is an instinct you possess, loads need to be worked up over a chronograph. Velocity and pressure are mutually exclusive.
I shoot for the most accurate load and then chrono. I could care less about velocity until I find what the rifle likes, then I can tinker with increasing velocity if I feel like I need to.
Max pressure is Max pressure regardless of velocity.
 
To me one of the funnest parts of owning a new rifle is working up a load it likes.
I'd start with a bullet that makes sense to YOU and go from there.
I've personally been using Hammers to do my dirty work for the past few years, but that's me. There are plenty of other projectiles that will do a fine job so have a fun ride finding the right medicine for your new toy.

Happy wapiti hunting Stillwater.
 
Homer. Stillwater, et al... dudes your North American bias is showing big time. I'm an ex- African PH in multiple countries - not SA - I hunted in the 80's. Actually I downplay the numbers very significantly, simply because as demonstrated here, as Americans, we can't grasp the concept. We pay our fees, pray for a tag, and get to go hunt. Geez... This year I have was blessed with 3 very special tags, in a very tough hunting and health altering year. I have blanked on the 2 trophy elk. Never fired a shot. So far I'm 19 days in field after my Nevada DBH, same story. Never fired a shot. Going back for last 6 days.
Think whatever you will, Merry Christmas, mine will be spent driving. I know the Internet is full of specious writings and elusive facts, but those things do not live in my words. Have a very Happy New Year, One and all, and may the blessings of the season follow you well into the new year!
 
I hope luck smiles on your sheep hunt Syncerus. 19 days plus a possible 6 more could easily wear one down. I'm happy to hear that you are persisting til the end. I hope you find a ram of your dreams. Best wishes.
 
Homer. Stillwater, et al... dudes your North American bias is showing big time. I'm an ex- African PH in multiple countries - not SA - I hunted in the 80's. Actually I downplay the numbers very significantly, simply because as demonstrated here, as Americans, we can't grasp the concept. We pay our fees, pray for a tag, and get to go hunt. Geez... This year I have was blessed with 3 very special tags, in a very tough hunting and health altering year. I have blanked on the 2 trophy elk. Never fired a shot. So far I'm 19 days in field after my Nevada DBH, same story. Never fired a shot. Going back for last 6 days.
Think whatever you will, Merry Christmas, mine will be spent driving. I know the Internet is full of specious writings and elusive facts, but those things do not live in my words. Have a very Happy New Year, One and all, and may the blessings of the season follow you well into the new year!
Hope you find the right ram!
 
Been running Berger 210gr VLD's for about 7 years rifle is a Factory Rem 700 .300 Win Mag 24" barrel.
75gr H1000
CCI 250's
+.15 Off Lands
Avg 2840 FPS LabRadar
50F Air Temp 4500 Elevation
Upgraded to an ATACR in September 👊

IMG_7315.jpeg
 
In regards to the Accubond suggestions, years back I loaded some 140’s in my 264 win mag. Took a mule deer with one. I wasn’t overly impressed, ended up shooting him twice. Both shots were behind the shoulder, basically a little hole in and one out. Not enough critter probably…… or I shoulda took him in the shoulders.
I would not go with Accubonds, I had the same experience with 3 deer before I said enough….
 
I've run a lot of Accubonds through deer, elk, antelope, bear and a wolf in 20 years. Never any problems. Fantastic bullet. mtmuley
 
For my 300 Win Mag w/26" barrel, I reload - 69grs H4831, CCI large rifle primer, topped off with 180gr Horn Interlock. This load isn't blazing fast but performance - dropped my 2022 bull elk at 440yrds right there.
 
Most if not all of the 300 Win Mags I’ve been around really like 75g of R22 and 180 gr Accubonds. 79g of H1000 and 200g ELDXs at 2970 fps are what my gun likes best
 

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