Long Range Hunting Online Magazine


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

Reloading Techniques For Reloading


Reply

Primers recommendations for 300 Win Mag

 
LinkBack Thread Tools Display Modes
  #15  
Old 12-12-2013, 09:56 AM
Silver Member
 
Join Date: Feb 2010
Location: Alaska
Posts: 333
Re: Primers recommendations for 300 Win Mag

Thanks for all the replies, I was just looking at the MK 248 Mod 1 load and noticed they use a Fed 210 Match with a very heavy dose of H1000 with the 220 MK. I bet it's just to keep the pressure down a tad.

I normally use magnum primers in Magnum rifles, but since this is such a heavy load......I don't think I will duplicate it at that levels.

Thanks again
Reply With Quote
  #16  
Old 12-13-2013, 12:37 PM
Bronze Member
 
Join Date: Sep 2013
Location: NE PA
Posts: 39
Re: Primers recommendations for 300 Win Mag

Quote:
Originally Posted by alaska View Post
Thanks for all the replies, I was just looking at the MK 248 Mod 1 load and noticed they use a Fed 210 Match with a very heavy dose of H1000 with the 220 MK. I bet it's just to keep the pressure down a tad.

I normally use magnum primers in Magnum rifles, but since this is such a heavy load......I don't think I will duplicate it at that levels.

Thanks again
With such a slow powder and with the amount of powder being used I highly doubt a Magnum primer will add any significant pressure to the load, especially if you don't load the bullet right up against the lands. It will however insure a complete and clean burn so I would use a Magnum primers in loads of that type.

If I read that load correctly it's 75.7gr H1000 and Hodgdon lists a Max charge of H1000 under a 220gr bullet @78.0gr with a Win LRM primer. According to that data you can safely use a magnum primer. (I would)
__________________
Freedom Is Never Free
Proud member of the NRA
Reply With Quote
  #17  
Old 12-13-2013, 01:23 PM
Silver Member
 
Join Date: Feb 2010
Location: Alaska
Posts: 333
Re: Primers recommendations for 300 Win Mag

Thanks for reply

I have some FC 12 brass once fired MK 248 Mod 1 ........and I can' t even use them because the primer pocket won't even keep the primer in.

Money wasted.

Their load was around 76.5 to 77.0 of H1000 with the 220 MK and FC 210 primers

Very Hot
Reply With Quote
  #18  
Old 12-16-2013, 05:38 PM
Bronze Member
 
Join Date: Sep 2013
Location: NE PA
Posts: 39
Re: Primers recommendations for 300 Win Mag

Quote:
Originally Posted by alaska View Post
Thanks for reply

I have some FC 12 brass once fired MK 248 Mod 1 ........and I can' t even use them because the primer pocket won't even keep the primer in.

Money wasted.

Their load was around 76.5 to 77.0 of H1000 with the 220 MK and FC 210 primers

Very Hot
Yes, that is a hot load but it's still not over what Hodgdon lists as the Max charge in that application but as we all know, it might be too hot in any rifle other than the test barrel they used!
__________________
Freedom Is Never Free
Proud member of the NRA
Reply With Quote
  #19  
Old 12-16-2013, 05:55 PM
Silver Member
 
Join Date: Feb 2010
Location: Alaska
Posts: 333
Re: Primers recommendations for 300 Win Mag

Weird the powder companies usually low ball their data...................

I am going to try 76.0 I noticed Sierra Manual suggest 75.5 of H1000 with a mag primer
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Primers recommendations for 300 Win Mag
Thread Thread Starter Forum Replies Last Post
Flatning Primers and Blowing out Primers Prairie Dog50 Reloading 26 02-24-2012 08:37 PM
Magnum primers as opposed to normal large primers ryaninutah Reloading 8 10-05-2011 11:28 PM
Flatning Primers and Blowing Out Primers Prairie Dog50 Reloading 8 12-29-2010 09:49 AM
large primers for trade only PRIMERS ARE GONE earl39 Trade, Freebie and Loan 7 06-19-2009 11:49 AM
WTT Small pistol primers*and*Large rifle primers RLIGHT Reloading Equipment and Components 2 04-27-2009 10:47 PM

Current Poll
Do you archery hunt for elk?
YES - 34.38%
121 Votes
NO - 48.58%
171 Votes
Not yet, but I plan to. - 17.05%
60 Votes
Total Votes: 352
You may not vote on this poll.

All times are GMT -5. The time now is 11:37 AM.


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