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Low 300 WSM Velocity
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I have started working up handloads for my newest rifle, a Rem 700 CDL SF in 300 WSM with a 24" barrel. I started with a 180 gr Nosler Partition trying both RE-19 and RE-22. Book max is 68.5 grains and I am only getting 2,750 for either powder. I know books tend to show velocities that are a bit higher than reality but two books are saying I should be around 2950.

I know this cartridge won't equal a 300 WM but I'd like a little higher velocity. Anyone have a pet load or words of wisdom?

Thanks,

CAMike
 
Posts: 3 | Registered: 16 February 2006Reply With Quote
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quote:
Originally posted by CaMike:
Anyone have a pet load or words of wisdom?

Thanks,

CAMike


Yes. Welcome to what seems like an "absolute" in reloading, especially with a Nosler manual.

They are notorious for inflated MV. The golden rule taught to me some 20 years ago was to smile if YOUR max was even 200fps slower than published max in a Nosler manual.


Ted Kennedy's car has killed more people than my guns
 
Posts: 7906 | Registered: 05 July 2004Reply With Quote
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Looks like a good load; almost as fast as my favorite 30-06 load. Maybe those short mags aren't so bad after all.
 
Posts: 317 | Location: Texas Panhandle | Registered: 09 July 2006Reply With Quote
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I have never loaded 180's in my 300WSM, but have loaded 165's with 66 grains IMR4350 at 3000 ft/sec. I consider this a Max load for my rifle and suggest starting at least two grains under and working up.


Dennis
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Posts: 1191 | Location: Ft. Morgan, CO | Registered: 15 April 2005Reply With Quote
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I would try 63 grns oh either h4350 or i4350 and work up from there


Mike

Legistine actu quod scripsi?

Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.




What I have learned on AR, since 2001:
1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken.
2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps.
3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges.
4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down.
5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine.
6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle.
7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions.
8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA.
9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not.
10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact.
11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores.
12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence.
13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances.
 
Posts: 10164 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
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I reload alot using Nosler manual and one problem is their test rifle for the 300 WSM is 26" barrel. If you look at IMR data they use a 24" barrel and most velocity is around 2900fps with a 180gr bullet also the new Speer also Sierra manual has around 70/71 gr of R-19/22 with a 180gr bullet to get 3000fps.

I got a 300WSM when they first came out and I check all manuals for best powder etc tried just about every one tht was rec and they also has a site called shortmag.com and I don't want to get into a contest with anyone but the manuals that rec above 70gr of R-12/22 those loads will get you better velocity.

I've got a factory T-3 and I'm over 3000fps with 165 gr bullets haven't tried a 180 in that rifle. The gunsmith I use has rethroated alot of the factory WSM, he did one for a friend of mine that had a FWT 270WSM and I got to see the before and after result big improvement.

I switched over to H-4350 for both factory and custom 300wsm I have and I'm using Fed 215M primers. Well good luck


VFW
 
Posts: 1098 | Location: usa | Registered: 16 March 2001Reply With Quote
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have tried the MAG PRO from ACCURATE?
check out the spec on reload data section

http://www.accuratepowder.com/data/Accurate%203-1.pdf

I use the MAG PRO in my 270 wsm and get over 3200 fps.
 
Posts: 10 | Location: two mountains, quebec | Registered: 27 March 2007Reply With Quote
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Thanks guys.

Tom, One of the books I have is Speer 14 and they show 68.5 as a max for both RE-19 and 22 for the 180 gr bullet.

Ca Mike
 
Posts: 3 | Registered: 16 February 2006Reply With Quote
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quote:
Originally posted by CaMike:
Thanks guys.

Tom, One of the books I have is Speer 14 and they show 68.5 as a max for both RE-19 and 22 for the 180 gr bullet.

Ca Mike
Beside getting old I cann't read the load I quote was for the 165gr bullet this may help
http://www.reloadersnest.com/query_bw.asp?CaliberID=244&BulletWeight=180


VFW
 
Posts: 1098 | Location: usa | Registered: 16 March 2001Reply With Quote
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Could be a lot of things. Have you worked up to Max in your rifle? Book max is only a guide, max in your rifle may be higher or it may be lower than the book.

I ran into something similar with R-22 in my 30-06 AI. When I first worked up loads with R-22 and 180's my max produced just under 2900fps. I purchased a new jug of R-22 and my velocity fell to less than 2700fps with the same load. Could be you have a slow lot of R-22. Have you double checked the accuracy of your Chrony with a proven load?

I would try some different powders. My 300WSMs get between 2900-3000fps/180s. I like Hunter, N-560, IMR 4831 and MagPro. To much lot ot lot variation with the R powders for me.
 
Posts: 1205 | Location: Minnesota | Registered: 07 February 2004Reply With Quote
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vihtavuori N-160 is a good powder for the 300WSM and usually gets better velocities than most powders. I had 190gr berger VLDS doing 2900FPS out of my kimber and it had a 24" barrel.

Pick up some VV N-160 and give it a go, im sure you'll get an increase in velocity
 
Posts: 735 | Location: New Zealand | Registered: 17 August 2006Reply With Quote
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I currently reload for my 300wsm. I use Nosler 150gr bullets. Book velocity is 3155 fps using 58.5grs IMR4064. Chony avg 3098fps. I also loaded 180gr Nolser partitions. Load data was 65.5grs IMR 4831: book vel was 3001. Chony avg 2915fps. Tested with Win model 70 Coyote with 24" barrel. Distance was 10 feet from muzzle. Hope this infor helps
 
Posts: 55 | Location: Wichita Ks. area | Registered: 30 June 2004Reply With Quote
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Thanks guys. I'll give some of the other powders a try. I'll also keep working up from where I currently am with Re-19 as I am not showing any pressure signs.

Steve, I have not been able to double check the Chrony as its the only one i have access to. Interesting thought.

CAMike
 
Posts: 3 | Registered: 16 February 2006Reply With Quote
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