Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

300 wetherby mag

 
LinkBack Thread Tools Display Modes
  #1  
Old 10-19-2010, 08:32 PM
Bronze Member
 
Join Date: Jan 2010
Location: up state NY
Posts: 43
300 wetherby mag

I seem to be haveing some problems with only a few rounds out of say 30 rounds that I load. When I fire the rounds that I load two to four dont fire I pull them apart and it seems that the primer has gone off. but no powder burn at all. I did find that the powder that came out was a little discolored looked greenish. not all all of it just some. Useing IMR 4350, CCI primers, and berger 168g bullets. The rounds only sat around for a couple of weeks before being fire. Thinking air may be getting in some who. Any help would great thanks.
Reply With Quote
  #2  
Old 10-19-2010, 09:02 PM
Silver Member
 
Join Date: Dec 2008
Posts: 178
Re: 300 wetherby mag

Could there have been sizing lube, water, or tumbling media in the case or somehow contaminating the primers? Could the powder have been contaminated? I would maybe call the service line for the powder maker and the primer maker, they should have some ideas......maybe there are some bad lots out there.
Reply With Quote
  #3  
Old 10-20-2010, 09:17 AM
Platinum Member
 
Join Date: Feb 2009
Location: Sedalia, MO
Posts: 1,253
Re: 300 wetherby mag

I'm with Goose here, sounds like you've got a contamination problem there somewhere. Even the most inadequate of LR primers should still be giving you ignition in your 300 Wby. Some possible things to check here; media stuck in the flash hole? Any left over lube getting into the primer pocket? Primers contaminated by lube elsewhere, like on the bench or in the primer tray? Common warnings about oils from your hands being transferred to the primer during handling and subsequently killing the primer are overstated, and they're really pretty hard to "kill". But there's something in the proces that's reducing their effectivness. How about improperly stored powder that is or has been damaged by contact with something that is degrading it in some manner?

You might also check headspace and how your sizing die is set up. The belt should obviate some of this, but you'll be better off if you treat this one as a normal, rimless case rather than as a belted design. Headspace it off the shoulder. While this should help ignition, I doubt it's the cause of your problem here.

By the way, noticing your moniker here, who were you with?

Kevin Thomas
Lapua USA
Co C, 1/506 Inf, '77-'81
Reply With Quote
  #4  
Old 10-20-2010, 10:08 AM
Platinum Member
 
Join Date: Jun 2010
Location: greenwood, IN
Posts: 3,543
Re: 300 wetherby mag

My guess would be contamination inside the case itself. I'd give the failed cases (after breaking them down) a really good cleaning. Then I'd lay them out all night with a light bulb close enough to get them warm but not hot. Also check the flash holes for blockage as you said the primers went off. Big Weatherby mags like real dense loads of slow burning powder for good ignition. I'll be honest with you in that I never reallized there was a load using 4350 with the .300! I've found that you just can't get enough primer in those big cases, and I like the Federal mag primer. Also remember to stay at a near max load with these big cases, as they don't act nice with lighter loads.
gary
Reply With Quote
  #5  
Old 10-20-2010, 07:06 PM
Bronze Member
 
Join Date: Jan 2010
Location: up state NY
Posts: 43
Re: 300 wetherby mag

I served with the 101st Air Borne 1/327 Sniper Recon INF DIV. The speer manual has a load 70g min 74g max loading 72g for mine. I am currently using the same eight pound keg for my custom 300 win mag and have had no problems. Even pulled a round from a lot that a made up this past spring of the 300win mag and the powder had the same shine that it does out of the keg. I am wondering if it might be the bullets the berger VLD bullets have to be seated really deep to match the book recomended 3.560" OAL maybe a few of the cases are not sealing tight around the bullet allowing air to get in. The cases used are once fired factory and have not been tumbled and I only neck size the case, since they are only fired out the the one rifle.
thanks for the help guys if you have anything else it would be great.



101sniper
Reply With Quote
  #6  
Old 10-20-2010, 09:31 PM
Silver Member
 
Join Date: Mar 2006
Location: SC
Posts: 222
Re: 300 wetherby mag

I think your problem might be the same i had before on a 30-06. I was using cci standard rifle primer and a youth load that only filled the case about 60-65% and It would not fire all the time. Had been using rem. primers with no problem and since have good back to remington primes and no problems at all. I think the standard cci doesnt have enough spark for a low fill case. 70gr of IMR 4350 would be about the same case fill I had. I found this to be worst if the case was tilled toward the bullet end and leaves an air gap on the primer end. Try a hotter primer and or more powder. hope this helps
Reply With Quote
  #7  
Old 10-21-2010, 09:50 AM
Platinum Member
 
Join Date: Jun 2010
Location: greenwood, IN
Posts: 3,543
Re: 300 wetherby mag

Quote:
Originally Posted by 101sniper View Post
I served with the 101st Air Borne 1/327 Sniper Recon INF DIV. The speer manual has a load 70g min 74g max loading 72g for mine. I am currently using the same eight pound keg for my custom 300 win mag and have had no problems. Even pulled a round from a lot that a made up this past spring of the 300win mag and the powder had the same shine that it does out of the keg. I am wondering if it might be the bullets the berger VLD bullets have to be seated really deep to match the book recomended 3.560" OAL maybe a few of the cases are not sealing tight around the bullet allowing air to get in. The cases used are once fired factory and have not been tumbled and I only neck size the case, since they are only fired out the the one rifle.
thanks for the help guys if you have anything else it would be great.



101sniper
I never said the load was a bad load, but I really was unaware that they had loads using 4350. I'm now thinking you may have some bad primers. I've bought a lot or two of primers in the past that had a few primers that were weak, and even a few duds mixed in there. I once bought a few hundred primers (CCI small primers) to use in my .222. Ignition was all over the place, and about one in five was a dud. Yet if you struck that primer two or three times the round might go off. I rebuilt the trigger and firing pin assembly twice with new parts; only to get the same results. Tried them in my .223, and got the same results with different powder combos. It ended up being a bad lot of primers. I think I'd call Hogdon (they now own IMR) and ask them for their opinion. Lastly have you ever tried IMR7828? I use that and RL22 and RL 25 in my Weatherbys.
gary
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 300 wetherby mag
Thread Thread Starter Forum Replies Last Post
Wetherby Mark V Lazermark askuznetsov Guns For Sale 0 09-07-2010 11:06 PM

Current Poll
Do you plan to buy a new custom rifle in the next 12 months?
YES - Of course - 72.91%
1,639 Vote
NO - wife/girlfriend won't let me. - 27.09%
609 Votes
Total Votes: 2,248
You may not vote on this poll.

All times are GMT -5. The time now is 12:34 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC