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working up some 300 weatherby load never got to good of a group best was with 89.5 grains of 7828. that only powder i tryed and its 150 btip from nosler
any power or other tips for grouping would be great

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[Linked Image] This load works well for me. For hunting, I use the same powder charge, etc. with Berger VLD bullets.

I suspect you'll get better accuracy from bullets heavier than 150 gr. I use 165 gr. and 168 gr. bullets in my 300 Weatherby Magnum. Another bullet I haven't used in my 300 Weatherby but one that might be worth a try that gives me excellent results in a 300 Winchester Magnum is the Nosler 200 gr. Accubond.

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Best accuracy load in my .300 Wby. uses 165 gr. Barnes TSX bullets, ahead of RL22 powder and CCI 250 primers. I won't give the powder weight, but MV is 3400 fps. Plenty fast, but accurate.


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ya im looking for 3300 atleast fps

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this was my budys gun.my budy went and shot the load agin today one inch group. think im gona look inot rl22 and 168 grain bergers for mine gone get orderd and wait a mnt or so i guess

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grumulkin u know how fast that load was?

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i use rem brass cci 250 primer 83gr of h4831 and 150gr speer hotcore or hornady interlock after i burn this pound of 4831 i am going to try rl22 or h1000 with 180gr

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ya i got some rl22 on hold for me. gona try that out

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83gr RL 22, Fed 215, Rem case, 168 gr TSX 3250 fps. Depending upon the source, that may or may not be a max load. The rifles I've tried this in shoot MOA or better. Kills game too. YMMV

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i was readin about poepel useing 87 and 88 grains of rl-22

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i shoot 150 partion outa mine weatherby factory load they crono ay 3499-3515 outa my gun

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My load is taken from one of JB's "Loads That Work" articles: 180 grain Scirocco II, 83.5 grains of IMR 7828, R-P cases and CCI Magnum Primers. It chronographs 3,250 fps ten ft from the muzzle and will consistently group three shots around 3/4" from my semi-custom Weatherby Vanguard. I have taken two bull elk with this load and both were one-shot kills. My step-son used it to take a nice Coues whitetail at right around 400 yds (we ranged the shot after the fact). The bullets are seated as far out as they can be and still work reliably through the magazine. YMMV...


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u know the bullet seating over all lenth?

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As mudhen states, load to the max magazine length. Unless its a custom barrel, it should still have more than enough freebore.

I haven't seen a 87 gr. RL 22 load. It probably won't hurt a gun, but case life will be very short. I really don't see the reason for the last 100 fps. I know some awfully good shots, but its unlikely they would care about the difference.

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I have worked with the 300 WBY extensively the past 20+ years. I think it is as good a long range thumper as you are going to find without doing something exotic. I never used many 150 grain bullets as the laser range finders make the velocity somewhat meaningless with the ability to dial in your drop. I have shot more 165-168s than all other bullets combined. I think my rifles use about 84-85 grain H4831 with a 165-168. I have a short throated chamber so my velocities with this powder charge will likely be higher than yours.

With 150s I had best luck with R19 and VV N550. I could get 3600+ out of my current rifle with 150s. Factory 150s were 3700 but are too hot considering my short throat.

7828 in NOT a good powder for 150s. You are better with H4350, H4831 or R19 if you want speed. R22 is decent but not quite as fast. Highest velocities are with n560 but with the outrageous prices they are getting for that powder now, I have discontinued using it.

165s were best at 3450 ish. This was easy with H4831 and N560.

Never shot many 180s. Shot some 200s a long time ago and used H870 @ 3000 fps in a 24" barrel. H870 is a horribly dirty powder. I would not try R22, 7838, H1000 or Magnum with 200s.


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Several .330 Wthby rifles have shot well with 180 gr Partitions and 82 to 85 gr of IMR 7828. Work up to the higher loads, of course. I am going to start on a load with the 168 gr TSX, but may try a different powder with that bullet.


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150 with rl-19 hmm have to try that

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If you want a LR load, try a 200 grain accubond and RL22.

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Originally Posted by hillbillyjake2506
grumulkin u know how fast that load was?


About 3,120 fps out of my rifle.

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i dnt want 200 grain wana stick to 150 to maybe 168

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Great thread for this. So far my sons MKV 300 dotes on 7828SSC and 200 grain PTs. My try some 200 ABs the next time around.


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Originally Posted by hillbillyjake2506
i dnt want 200 grain wana stick to 150 to maybe 168
Just curious, why do you like such light weight bullets?

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here you go

[Linked Image]


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I shot a big Caribou at lasered 290 yards with a 180 grain TSX. Twice through the lungs and the third shot through the front shoulder because he would not fall down. Examination of the wound channels said that the bullets did not open up at all. I couldn't even push my little finger all the way into the exit hole in the scapula. Don't think I will use those bullets again. Never had a NP not drop one DRT. I have to admit that with a case full of H4831sc the gun is an accurate thumper.
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Originally Posted by dennisinaz
I have worked with the 300 WBY extensively the past 20+ years. I think it is as good a long range thumper as you are going to find without doing something exotic. I never used many 150 grain bullets as the laser range finders make the velocity somewhat meaningless with the ability to dial in your drop. I have shot more 165-168s than all other bullets combined. I think my rifles use about 84-85 grain H4831 with a 165-168. I have a short throated chamber so my velocities with this powder charge will likely be higher than yours.

With 150s I had best luck with R19 and VV N550. I could get 3600+ out of my current rifle with 150s. Factory 150s were 3700 but are too hot considering my short throat.

7828 in NOT a good powder for 150s. You are better with H4350, H4831 or R19 if you want speed. R22 is decent but not quite as fast. Highest velocities are with n560 but with the outrageous prices they are getting for that powder now, I have discontinued using it.

165s were best at 3450 ish. This was easy with H4831 and N560.

Never shot many 180s. Shot some 200s a long time ago and used H870 @ 3000 fps in a 24" barrel. H870 is a horribly dirty powder. I would not try R22, 7838, H1000 or Magnum with 200s.


Interesting! I've been trying to come up with a load for 300 Wtby in a new to me custom shop 700. Been up to 85 gr H4831sc with 168 NBT but cant get over 3080 fps on the chrono. Factory Wtby ammo is running around 3250 avg. Any thoughts?




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I have been working up loads for my Vangard and with 83 gr IMR-7828SSC, 168 gr TTSXs, Fed Mag primers, & Hornady brass I got this 3-shot group:

[Linked Image]

I'm done!

That's one grain under (Hodgdon) book max but I'm not sure how fast they're going but suspect it's in the neighborhood of 3200.

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Originally Posted by hillbillyjake2506
i dnt want 200 grain wana stick to 150 to maybe 168


Buy a 308 and some English classes... wink


Originally Posted by raybass
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style.
Originally Posted by Pharmseller
You want to see an animal drop right now? Shoot him in the ear hole.

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Back when Mr. Kleinguenther was alive I loaded a little ammo for him. His 300 wby load is 84.9 Gr. 7828 with 180 grain hornady spire point flat base bullets. I used 215 primers. Load shot real well in every rifle I ever tried it in. Hasbeen


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Anyone running the 175 LRX with RL23?

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I don't have the loads the Op is asking for. I think that has been answered though.

I had been using 338 Win Mag's forever and decided to try the 300 Weatherby to replace the 338. Since I am trying to eliminate calibers and have a few 30 caliber rifles. I stopped when I got to 200 grain partitions and was pleased with the accuracy I got at full power loads> I felt that this load should easily replace the 338. I shot three each five shot groups:

300 Weatherby, Remington 700 Classic, 200 grain Nosler Partition, 215, 78.2 grains RE 26, (Best load), 0.66 MOA, .71 MOA and .71 MOA (average .693 MOA)

The rifle loved that combination. It shot 220 grain partitions well too, but not as good (1 inch group) with RE26. I didn't try many loads below 200 grain and only a couple powders with 220 grain partitions.


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Originally Posted by hasbeen1945
Back when Mr. Kleinguenther was alive I loaded a little ammo for him. His 300 wby load is 84.9 Gr. 7828 with 180 grain hornady spire point flat base bullets. I used 215 primers. Load shot real well in every rifle I ever tried it in. Hasbeen


My 300 Weatherby drove me absolutely crazy during load development. I was so determined to shoot the 165 gr bullets I never considered 180 grains. Totally frustrated I reached out to my online source back then. One person responded with a private message as he had experienced the same frustration. He told me he finally landed on 84.5 gr's 7828 and 180 gr bullets. So, I tried it. The first two shot went in the same hole so tight I had to go downrange & fold the paper back to see the double graphite ring.

After 430 rounds of wasted attempts, the 7828 load was the only load I have used in that gun since. It is dependably < 1/2 moa.


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Originally Posted by Reloder28
Originally Posted by hasbeen1945
Back when Mr. Kleinguenther was alive I loaded a little ammo for him. His 300 wby load is 84.9 Gr. 7828 with 180 grain hornady spire point flat base bullets. I used 215 primers. Load shot real well in every rifle I ever tried it in. Hasbeen


My 300 Weatherby drove me absolutely crazy during load development. I was so determined to shoot the 165 gr bullets I never considered 180 grains. Totally frustrated I reached out to my online source back then. One person responded with a private message as he had experienced the same frustration. He told me he finally landed on 84.5 gr's 7828 and 180 gr bullets. So, I tried it. The first two shot went in the same hole so tight I had to go downrange & fold the paper back to see the double graphite ring.

After 430 rounds of wasted attempts, the 7828 load was the only load I have used in that gun since. It is dependably < 1/2 moa.

This is an old thread. The guy that revived it, was asking about the 175 LRX and RL23 powder. To the illiterate OP, like I said before. He should buy a 308w and take English/writing classes. You are absolutely right though. IMR7828 in the 300WBY. End of subject..


Originally Posted by raybass
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style.
Originally Posted by Pharmseller
You want to see an animal drop right now? Shoot him in the ear hole.

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I had Robert Kleinguenther do some work for me. When he found out I was a handloader he wanted me to do some loading for him. His load for the 300 wby is 84.9 grains of 7828 with a Federal 215. He also used 180 grain Hornady flat base bullets. I always thought he should know because of his working for Weatherby.
This load was always very accurate in every rifle I tried it in. Hasbeen


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