Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Promised pics of the 510 Allen Magnum...

 
LinkBack Thread Tools Display Modes
  #1  
Old 08-13-2006, 01:54 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,796
Promised pics of the 510 Allen Magnum...

TO all. I got out this morning to do a bit of my personal shooting as well as test a couple other rifles for customers.

Many of you wanted to see some better pics of my 510 Allen Mag so I took some.

I was just shooting some fireforming loads in Virgin cases as well as in some semi formed cases which I had annealed so the shoulder would sharpen up properly so I can send a few off to get dies made.

I was only shooting at 100 yards but the virgin fireforming loads simply refused to puch groups larger then 3/8" for three shots. Now these loads are tripping the chrono at only 2400 fps so they are VERY easy to shoot. The load I used for these was 215 gr H-50BMG under the 750 gr A-Max.

For the semi formed cases I poured some more powder to them using 240.0 gr H-50BMG under the 750 gr A-Max. When I held the big rifle steady they shot just as well as the lighter loads but I was shooting off the bipod which flops side to side quite easily. When the reticle would roll to the right, the shot would be slightly to the right, when she rolled left the shot would print slightly to the left.

THese heavier load averaged 2745 fps for 10 shots. There was more velocity variation then I like to see but the load density is MUCH lower then it really should be. When I get serious about doing load development I will be starting with US869 and VV 20N29 which should both improve load density dramatically.

Just comparing the load data for H-50BMG to US869 with the 750 gr A-Max. Hodgdon lists a max load of 233.0 gr for H-50BMG and 250.0 gr for US869.

Now in real life, if you put 233.0 gr of H-50BMG in a match rifle chambered for a 50 BMG you would probably not get the bolt open. I have found absolute max with this powder and bullet in most 50 BMG rifles will be in the 215 to 222 gr range max. Seeing that the 510 AM will comfortably take 240 gr of powder shows how much case capacity has increased.

Hodgdon also lists that US869 will produce from 125 to 150 fps more velocity then H-50BMG with the 750 gr A-Max and even better with the heavier bullet weights!!!

Here are the pics.







Here is a pic of a six shot group I shot with the 2745 fps load.



Considering my crude bullet seating system this is much better then I ever expected. OAL varied as much as 25 thou. I am making tooling right now to correct this problem until the dies get in. Still, just shy of 3/4" for six shots at 100 yards with a 750 gr bullet at just under 2750 fps is a pretty good start.

I will probably put the rest of the 510 AMs testing on hold until I get the dies made and get through the big game rifle rush for customers which I am in the middle of right now!!

More to come soon though.

Kirby Allen(50)
__________________
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
  #2  
Old 08-13-2006, 03:03 PM
Platinum Member
 
Join Date: Jun 2005
Location: Yakima, Washington
Posts: 3,833
Re: Promised pics of the 510 Allen Magnum...

Looks like she might just be a "shooter".

Maybe if the chucks don't want to cooperate because of the weather, you could aim a little low and root them out with this and pop them with the 338 AM. Just a thought. I'll bet those big slugs move a lot of terrain when they hit.

Looks a little bit different than most Allen Mags but necessity is the mother of invention, and this big buster is a long range hammer in a league of it's own.

So far, at least, I've never had an overwhelming urge to own a fifty cal but I'd bet this one would be a ball to shoot.

Keep us posted when you continue testing with this big thumper.
__________________
ss7mm
Reply With Quote
  #3  
Old 08-13-2006, 04:35 PM
Gold Member
 
Join Date: Jan 2005
Location: Western MI
Posts: 716
Re: Promised pics of the 510 Allen Magnum...

Kirby,

Very impressive to say the least. Accuracy can only get better!
Is that a "compact" scope you have on that rifle? [img]/ubbthreads/images/graemlins/shocked.gif[/img]

JD338
Reply With Quote
  #4  
Old 08-13-2006, 05:36 PM
Gold Member
 
Join Date: Nov 2004
Posts: 878
Re: Promised pics of the 510 Allen Magnum...

[ QUOTE ]
Kirby,

Very impressive to say the least. Accuracy can only get better!
Is that a "compact" scope you have on that rifle? [img]/ubbthreads/images/graemlins/shocked.gif[/img]

JD338

[/ QUOTE ]
Scope? I was wondering where he got a rear bag that tiny! That thing must have been stiched by smurfs!
Reply With Quote
  #5  
Old 08-13-2006, 05:51 PM
SPONSOR
 
Join Date: Nov 2004
Location: El Reno, OK
Posts: 1,503
Re: Promised pics of the 510 Allen Magnum...

Good looking set up. I really like that muzzle break you made for her, looks nice. Do you ever get curious and entertain the thought of shooting that mig mother without the break????


Good looking rig,
steve
__________________
Steve Elmenhorst
Third Generation Shooting Supply
www.3rdgss.com
"Products for shooters, by shooters"
1-800-522-3314
monday-friday 8:30-5:30 CST
Reply With Quote
  #6  
Old 08-13-2006, 07:49 PM
Silver Member
 
Join Date: Jan 2002
Location: Armagh, PA
Posts: 290
Re: Promised pics of the 510 Allen Magnum...

[ QUOTE ]
I got out this morning to do a bit of my personal shooting as well as test a couple other rifles for customers.


[/ QUOTE ]

Kirby...first thing...sweet looking rig! I also liked the lightweight 7mm AM.

I pasted the above quote in hopes that you fired at least one "customer pistol" in your test shooting this AM?! [img]/ubbthreads/images/graemlins/wink.gif[/img]
__________________
Dan B.
Reply With Quote
  #7  
Old 08-13-2006, 08:48 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,796
Re: Promised pics of the 510 Allen Magnum...

Lerch,

Shooting the 215 gr loads under the A-Max, yes I was curious about the recoil without a brake.

After shooting the 240 gr loads with the same bullets, I can say with no hesitation that I have no curiousity at all what the recoil feels like without the brake [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]!!

When our paths cross I will make sure I have the 510 with me and you can tell me what it feels like without the brake [img]/ubbthreads/images/graemlins/grin.gif[/img]!! And if you do I freely admit your more man then I am!!

Kirby Allen(50)
__________________
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
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Promised pics of the 510 Allen Magnum...
Thread Thread Starter Forum Replies Last Post
ALLEN PRECISION 510 Allen Magnum for sale Fiftydriver Guns For Sale 4 01-05-2012 10:35 PM
Original Allen Precision 375 Allen Magnum XHS for sale.... Fiftydriver Guns For Sale 10 02-02-2010 01:55 AM
Allen magnum harfman99 Rifles, Bullets, Barrels and Ballistics 82 04-03-2008 04:22 PM
375 Allen Magnum first long range accuracy test, 510 Allen Magnum gets to play too... Fiftydriver Rifles, Bullets, Barrels and Ballistics 9 02-20-2008 08:42 PM
Lightweight 7mm Allen Magnum pics.... Fiftydriver Rifles, Bullets, Barrels and Ballistics 26 08-21-2006 07:10 AM

Current Poll
How Many Different Cartridges Do You Reload For?
ZERO, all factory ammo - 8.04%
359 Votes
1 - 2.78%
124 Votes
2 or 3 - 14.61%
652 Votes
4 or 5 - 20.37%
909 Votes
6 or 7 - 14.86%
663 Votes
8 or 9 - 8.65%
386 Votes
10 or more - 30.70%
1,370 Vote
Total Votes: 4,463
You may not vote on this poll.

All times are GMT -5. The time now is 03:33 AM.


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