This year I'll be using 77 grains of IMR4350 behind a 180 grain Barnes TTSX bullet in a 24" barrel Vanguard as my elk load. After installing a Timnry trigger that took way less than 1/2 an hour with several adjustments the group st 100 yards with 3 shots was a single hole maybe 45 caliber in diameter. I didnt think 3 .30 caliber bullets could be thst close from this rifle but thr next 2 were touching the bottom of the hole for sometimg like a 1/2" 5 shot group.

When the weather cools I'll see how it does at 600 or more yards on a 1,000 yard range to get ready. I'll br using a Zeiss 600 yard reticle on a 3x9×50 conquest and am anxious to seehow it works.

Should kill elk nicely.

I've shot a couple elk with a 180 gr TSX out of my 300 WM. you should be pleasantly surprised with your choice of bullet.

What velocities are you getting? I've been shooting the 300 Weatherby for over twenty years and IMR 4350 is on the fast side for that cartridge. Just watch the pressure. I can recommend a real good fast, safe and accurate load using T or TTSXs if you'd like. jorge

I've used one grain less (76 gr IMR 4350) with 180s for decades. I get about 2975 fps from 24" bbls (2). I'm using WBY brass here and not the slightest pressure indication.

My Remington .300 WBY brass is much thicker, heavier, and holds about 8 grains less 4350. I will not be loading them with 76 gr 4350 for 180s.

It's almost as if we're looking at two different cartridges. http://forums.accuratereloadin...3221043/m/4341051091

Sam

My .300 Weatherby Vanguard likes IMR 7828 and H4831sc powders with 168 and 180 gr TSX and TTSX bullets for hunting, and 168 gr Hornady BTHP bullets for practice. I'm getting 3250-3290 fps with the 168 gr bullets and 3190 fps with the 180 gr TSXs.

I also load 166 gr cast bullets with SR 4759 powder for 100 yd "field position" practice, and 150 gr Hornady BT-FMJ bullets with IMR 4350 for small critters (like African Civet) that I don't want to put too large a hole into.

I've only used my .300 Wby on three hunts. One of them was an elk hunt, and the 168 gr TSX tight behind a bull's shoulder made him DRT in 3 steps.

Last summer, a Sable bull was able to run about 30 yds with a 168 gr TTSX bullet through both of his shoulders before he fell dead.

I big game hunted about 40 years before I bought my .300 Weatherby. I just wish I would have bought it 30 years ago.

I haven't run them through the chrony yet but of 8 loads I tried this was the only one that showed real promise. The first group with this load and a terrible trigger was about an inch. All of the others including the factory round were 2"+ with some downright awful. Reloading for me isn't an academic exercise or a quest for perfection in a rifle. Once I have found an accurate load near the capability of the round that is consistently under an inch it is time to go hunting. I know that some rifles shoot many loads well and just aren't picky but this one didn't seem like it would fall into that category. To be able to put the first 3 shots into a single hole was a pleasant surprise.

With the scarcity of powder in my area and high cost to ship online orders I will probably never get around to trying Retumbo or 7828 although I'm sure they would produce better velocities. Being able to hit 12" gongs past 500 yards from field positions is what will tell me that it is elk ready.


I bought the gun because it was such a bargain and I wanted a different back up for my 7 mag. Getting the same basic ballistic performance using 180 gr vs. 150's in 7 Rem Mag with the ttsx is probably going to move the 300 Wby to 1st string. I wasn't thinking of that until I replaced the trigger. The difference is huge between the crisp clean feel of the Timney and the mushy factory trigger that broke over 5 lbs.

Thanks for the input I can't wait to see results on elk hopefully I won't have to wait past November.

My brother's 300 Wby (Mk V) likes IMR4350 under a 180 Grand Slam. Shoots 3/4 MOA at 100 yds.

The accuracy sounds good but that is a REALLY stout load.

Ken....

For what it's worth, I used a 180tsx out of my .300 H&H at 2,950 fps (26" bbl) in Africa last year.

On the two Kudu I shot, the first one took three shots of which only one exited.

1. First shot: Right side, angling into the left shoulder. Bullet broke up (ie: sheared all petals) on the shoulder socket. Shot distance: 265 yards. Appx 30" of penetration.

2. Second shot: Left Side, angled forward, exited the lower front of the chest. Shot distance: 280 yards.

(*now he started running.)

3. Third shot: across a ravine, he was coming up the far side with his back to me. Shot 6" left of spine, angling foward into the right shoulder. Bullet found just under the skin after shattering the socket. Bullet sheared all petals. No exit. appx 30" of penetration.


On the second Kudu I had a perfect broadside shot at 287 yards. Tucked the shot in tight on the right side and destroyed the left shoulder on the way out. 1" exit wound. Appx 24" of penetration before exiting.

Hope that helps.