Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


Reply

338 Allen Xpress, RL33 load development

 
LinkBack Thread Tools Display Modes
  #43  
Old 09-25-2013, 09:55 AM
Platinum Member
 
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,953
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by Outlaw6.0 View Post
Good to know I was thinking the same thing with the 160's in the 6.5wsm... could be just the ticket? Not sure about the -284 with your 100's, you may have better luck with DTACS & RL-33 but don't let me sway you! I'm just as curious to see as you are


t
Yeah, for the 100 gr bore riders through a nitrided tube, I think RL17 will be more suited. Never hurts to try though
__________________
- Mark

You will never know how much it has cost my generation to preserve your freedom. I hope you make good use of it.
~ John Quincy Adams
Reply With Quote
  #44  
Old 09-25-2013, 12:17 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,822
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by MMERSS View Post
I loaded up a few rounds of RL-33 for pressure tests.

99gr of RL-33 is showing same velocity as 94gr Retumbo with the 300 SMK in my Lapua. There is some velocity increase with the RL-33 over Retumvo with the Bergers.

This makes me wonder if the improved cases are taking more advantage of the RL-33.
With your Lapua, are you pressuring out or are you running out of case capacity at these powder charge levels?

Depending on your throat length, may just be a capacity issue where you can not take advantage of the slower powder simply because of lack of room. What you see with the 99.0 gr of RL33 vs 94.0 gr Retumbo with the SMK at the same velocity is about what I am seeing as well with that amount of spread for same velocity. Only that with Retumbo, I am pressured out and with RL33 still have a lot of room to increase.

I am surpised your getting 94.0 gr of Retumbo in your Lapua with comfortable pressures. Seems a little high with the 300 gr SMK, with the Berger that would be on the top side of what I generally use but with the SMK and its longer baring surface, it tends to pressure out a bit sooner with Retumbo.

Just curious what your load density is at 99.0 gr of RL33?
__________________
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
Reply With Quote
  #45  
Old 09-25-2013, 02:40 PM
Silver Member
 
Join Date: Feb 2012
Posts: 421
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by Fiftydriver View Post
It is ideal for the 338 Lapua. From what we are seeing, looks good with the 250 and 300 gr bullets. It may not show as much advantage with lighter weight 338 cal bullets but there are not many shooting lighter then the 250 for long range shooting anyway.

Very good in the big 30 cals also.
Thanks. I am curious to whether it is beneficial to the 6.5-284? I shoot 140 bergers using 58 grains of Retumbo. Is there any benefit to using a slower powder like RL33 with that cartridge or even a 264 Win Mag?
Reply With Quote
  #46  
Old 09-25-2013, 04:25 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,822
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by branwill25 View Post
Thanks. I am curious to whether it is beneficial to the 6.5-284? I shoot 140 bergers using 58 grains of Retumbo. Is there any benefit to using a slower powder like RL33 with that cartridge or even a 264 Win Mag?
With the 264 Win Mag, possibly with bullets in the 140 gr and heavier range.

With the 6.5-284, I would say it would be to slow burning by a fair margin. Many better choices out there. I would even think that Retumbo would be quite slow for this chambering. I have always found H-4831 to be very good in the 6.5-284 along with RL19 and RL22. I know many poo-poo these two powders for some reason.
__________________
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
Reply With Quote
  #47  
Old 09-25-2013, 05:11 PM
Silver Member
 
Join Date: Feb 2012
Posts: 421
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by Fiftydriver View Post
With the 264 Win Mag, possibly with bullets in the 140 gr and heavier range.

With the 6.5-284, I would say it would be to slow burning by a fair margin. Many better choices out there. I would even think that Retumbo would be quite slow for this chambering. I have always found H-4831 to be very good in the 6.5-284 along with RL19 and RL22. I know many poo-poo these two powders for some reason.
I use H4831 in my 260 Rem and have never tried it in the 6.5-284. What load have you used with H4831? Thanks
Reply With Quote
  #48  
Old 09-25-2013, 05:27 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,822
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by branwill25 View Post
I use H4831 in my 260 Rem and have never tried it in the 6.5-284. What load have you used with H4831? Thanks
I have always topped out at around 50-52 grains with 140-142 gr bullets with H4831 in the 6.5-284.

Start at around 46.0 gr and work up.
__________________
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
Reply With Quote
  #49  
Old 09-25-2013, 06:06 PM
Silver Member
 
Join Date: Feb 2012
Posts: 421
Re: 338 Allen Xpress, RL33 load development

Quote:
Originally Posted by Fiftydriver View Post
I have always topped out at around 50-52 grains with 140-142 gr bullets with H4831 in the 6.5-284.

Start at around 46.0 gr and work up.
Will do thank you sir. What is your velocity with those?
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes



All times are GMT -5. The time now is 02:45 PM.


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