Long Range Hunting Online Magazine


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

Reloading Techniques For Reloading


Reply

.300 RUM brass

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-18-2005, 08:39 AM
Silver Member
 
Join Date: Mar 2005
Location: Wyoming
Posts: 198
.300 RUM brass

to the more qualified, I have a question.

I am reloading for my 300 RUM using remington brass, remington 9 1/2M primers and 99.5 gr Retumbo behind 180 gr interbonds seated at 3.600" so they can be fed through the magazine in my 700 CDL, and still quite far from the lands. The cases are averaging .0002 expansion with the edge of the micrometer head on the shiny rub mark left by my full length resizing die. the primers still look normal to me after firing (much better than the factory loads). After two firings, 20 of 75 primer pockets were so loose that I didn't feel any resistance putting the primer in.

I tossed the 20 and am going to reject the other 50 after this firing, but before I finish loading. . .

Is this common with the remington brass or did I just get a poor quality batch? How much do you recommend I lower the loads to bring the pressure down during this final firing if that is the problem?
__________________
"I am a stone. I do not move. Very slowly, I put snow in my mouth and he won't see my breath. I take my time. . . I have only one bullet. I aim at his eye. Very gently, my finger presses on the trigger. I do not tremble. I have no fear"
Reply With Quote

  #2  
Old 07-18-2005, 09:56 AM
Platinum Member
 
Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,524
Re: .300 RUM brass

First, have you fired your loads through a chronograph??

2nd, Retumbo sometimes has a tendancy to beat up brass pretty good. No I dont know why. You may want to experiment with differant powders such as RL-25 or H50BMG if your rifle generates higher than normal pressures for a given powder type and charge.

Make sure and start with a chrony. If your loads are within velocity standards, try another powder, if not back off. Retumbo will be somewhere around 20-30 FPS per grain in the 300 RUM. If you decide to try a differant powder and your velocity is less than max and still have the same problem, it could be the brass. Try new brass and if that doesnt help, look elsewhere. I am not sure where.

I havent noticed Remington 300 RUM brass to be that bad. Also, have you tried any other primers?

Hope that helps some.
__________________
Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
Reply With Quote
  #3  
Old 07-18-2005, 10:06 AM
Gold Member
 
Join Date: Jan 2005
Location: N.C
Posts: 540
Re: .300 RUM brass

Sasquatch Rem primers are very loose compared to others after about 2 to 3 firings. I don't know why other than they are just a smidge smaller in diameter compared to other brands. I have experienced the same thing in my 7RUM. some of my cases are on their 5th firing and I could put rem primers in with my fingers if I wanted but CCI and fed still fit fine.
__________________
Guns and ammo, what more do we need?
Reply With Quote
  #4  
Old 07-18-2005, 08:39 PM
Silver Member
 
Join Date: Mar 2005
Location: Wyoming
Posts: 198
Re: .300 RUM brass

I hadn't thought of that 7RUM. I'll see if I can get a good fit with CCI or Federals after I shoot up the 50 that still had some resistance. I've had bad luck with win primers in the past.
__________________
"I am a stone. I do not move. Very slowly, I put snow in my mouth and he won't see my breath. I take my time. . . I have only one bullet. I aim at his eye. Very gently, my finger presses on the trigger. I do not tremble. I have no fear"
Reply With Quote
  #5  
Old 07-19-2005, 04:40 PM
Sponsor
 
Join Date: Jun 2007
Location: North Idaho
Posts: 1,828
Re: .300 RUM brass

Guys,

I have run into a loosening withcertain primers and Rem brass in my 338 EDGE's. I have found that Federal brass has tighter primer pockets and not had problem 1 with Fed brass and CCI 250's. I believe that you are running into a big but acceptable pocket and a small but acceptable primer. Good components but poor combo.
__________________
Shawn Carlock

www.defensiveedge.net
1-208-687-2659
Reply With Quote
  #6  
Old 07-19-2005, 05:40 PM
Platinum Member
 
Join Date: Feb 2005
Location: Nevada
Posts: 2,782
Re: .300 RUM brass

sasquatch,
I have only used remington brass in the 300 RUM, also I have only used Retumbo powder. The only time I had loose primers was when I had 180 grains coming out at 3480 f/s or so,(pretty hot load from a 26 inch barrel);then again right now I'm shooting 200 grains accubond at just over 3200 f/s and no loose primers in 3 loadings. I do use Federal Match primers. A better brass would be Federal and from what I read a good place to get it from would be FROM HERE Many from longrangehunting.com have reported to be excellent!
Good Luck to you!
__________________
-----------------------------

-----------------------------
HEBREWS 13:8
Jesus Christ the same yesterday, and to day, and for ever.

Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!!

---> As promised, God Sent His Prophet to us!
Reply With Quote
  #7  
Old 07-22-2005, 10:29 PM
Silver Member
 
Join Date: Mar 2005
Location: Wyoming
Posts: 198
Re: .300 RUM brass

I went and bought some CCI 250 primers this morning, there weren't any federals left. resized and deprimed 1 casing that had a loose primer from the remington primers. grabbed a new one and decided to try putting it in by hand. the primer started in, but I couldn't seat it without some extra leverage from a butter knife. grabbed a CCI primer and couldn't even get it started without the press! Thanks for the help guys.


[img]/ubbthreads/images/graemlins/laugh.gif[/img] Anyone want 700 remington 9.5 Magnum primers? If the offer is right, I'm willing to trade. Maybe some ocean front property here in WY? [img]/ubbthreads/images/graemlins/laugh.gif[/img]
__________________
"I am a stone. I do not move. Very slowly, I put snow in my mouth and he won't see my breath. I take my time. . . I have only one bullet. I aim at his eye. Very gently, my finger presses on the trigger. I do not tremble. I have no fear"
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: .300 RUM brass
Thread Thread Starter Forum Replies Last Post
338 Lapua Brass compared to 300 Remington Ultra Brass DANTEC Rifles, Bullets, Barrels and Ballistics 6 02-29-2012 11:43 PM
Group differences in Weatherby Brass versus new Norma Brass TX mountain hunter Long Range Hunting & Shooting 5 12-29-2010 10:17 PM
25-06 reloading dies, brass, and bullets / 45ACP brass jeffro Reloading Equipment and Components 1 05-01-2010 10:51 AM
338 Edge, Brass life test. Rem 300RUM brass AJ Peacock Reloading 15 12-30-2009 12:26 PM
Nosler Brass cosmetic seconds good brass? sambo3006 Reloading 6 01-04-2007 08:57 PM


All times are GMT -5. The time now is 01:39 PM.


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