HuntingNut
HuntingNut
   Login or Register
HomeCommunity ForumsPhoto AlbumsRegister
     
 

User Info

Welcome Anonymous


Membership:
Latest: rzleromer
New Today: 0
New Yesterday: 1
Overall: 12583

People Online:
Members: 0
Visitors: 43
BOT: 2
Total: 45
Who Is Where:
 Visitors:
01: Forums
02: Forums
03: Forums
04: Your Account
05: Forums
06: Forums
07: Forums
08: Forums
09: Forums
10: Forums
11: Forums
12: Forums
13: Forums
14: Home
15: Forums
16: Photo Albums
17: Photo Albums
18: Forums
19: Forums
20: Photo Albums
21: Forums
22: Forums
23: Forums
24: Forums
25: Forums
26: Forums
27: Forums
28: Forums
29: Forums
30: Forums
31: Forums
32: Forums
33: Forums
34: Forums
35: Forums
36: Forums
37: Forums
38: Forums
39: Forums
40: Forums
41: Forums
42: Home
43: Forums
  BOT:
01: Forums
02: Forums

Staff Online:

No staff members are online!
 

Coppermine Stats
Photo Albums
 Albums: 305
 Pictures: 2357
  · Views: 355988
  · Votes: 1306
  · Comments: 85
 

Support our Advertisers

Erratic Velocity
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
Go to page Previous  1, 2, 3
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition

View previous topic :: View next topic  
Author Message
Aloysius
Super Member
Super Member


Joined: Nov 03, 2009
Posts: 2121
Location: B., Belgium

PostPosted: Fri Mar 23, 2018 1:39 am    Post subject: Re: Erratic Velocity Reply with quote

When I was reloading for the .22 Hornet I noticed with rounds that had everything the same exept the primer, on 100 m the rounds with a magnum primer hit the target 1 to 1,5" (3-4 cm) LOWER than with normal primers. I have to admit that I don't own a Lee FCD for the .22 Hornet. And maybe because it's such a small case, the influence of the primer (and the difference in case volume due to bullet-travel before powder ignition) is more visible that with larger cases. But that early bulletstart due to the magnum primer was the only fair explanation I could find and sure: a firm crimp might have prevent it.
Back to top
View user's profile
Pumpkinslinger
Super Member
Super Member


Joined: Sep 22, 2007
Posts: 4463
Location: NC foothills

PostPosted: Fri Mar 23, 2018 2:47 am    Post subject: Re: Erratic Velocity Reply with quote

From Hodgdon's web site:

"Because this propellant is tailored for specific applications, the number of cartridges and bullets is limited, but where it works, it really works!"

The .270 Win isn't on the list. The .280 Rem is and the heaviest bullet listed is 140 grains.

_________________
Mike

"I ain't no better than anyone else, and there ain't no one better than me!" Ma Kettle

Back to top
View user's profile AIM Address Yahoo Messenger Photo Gallery
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Fri Mar 23, 2018 6:08 am    Post subject: Re: Erratic Velocity Reply with quote

Pkslinger, you are correct. Its not listed for the .270 on Hodgdon's website but it is on Barnes. Other reloaders have reported success with up to 150gr bullets in the .270. I'm just cautiously giving it a try after being disappointed with Hodgdon's 7977 which is on Hodgdon's list.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Fri Mar 30, 2018 5:46 pm    Post subject: Re: Erratic Velocity Reply with quote

Pumpkinslinger wrote:
From Hodgdon's web site:

"Because this propellant is tailored for specific applications, the number of cartridges and bullets is limited, but where it works, it really works!"

The above has applied for my experience.

Got to shoot the 56.5 grains of Superformance with standard and magnum primers, 3 shots each. Velocity variation was greater with the standard primer which had the min and max velocities on the chart.



.270 win eld-x powder vs velocity r1.jpg
 Description:
 Filesize:  59.46 KB
 Viewed:  645 Time(s)

.270 win eld-x powder vs velocity r1.jpg


_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Fri Mar 30, 2018 5:53 pm    Post subject: Re: Erratic Velocity Reply with quote

Even though the velocity variation was not bad with the magnum primers (black lower triangle), the group size was not better than the standard primers (blue triangle above it). This target was at 200 yards. POA is the small orange dot 2" to the lower left of the center bull. This rifle has never shot a group this large before. Not sure any more precious metal will be sent down range with this powder.

The 1/2 moa group near the center was from my 6.8mm with 105gr MKZs which had the same muzzle velocity as the 145 ELD-X from the .270. Not bad for an AR-15 platform.

The extra hole next to the left side of the black triangle is a single shot from my .270 129 LRX load. I always shoot one or two at a range session to track this load's performance over time. The rifle is zero'd for 100 yards then I use a mil-dot reticle out to 600 yards. The impact was exactly where I expected it.



superformance groups 56.5 grains.jpg
 Description:
 Filesize:  200.48 KB
 Viewed:  642 Time(s)

superformance groups 56.5 grains.jpg


_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
Elvis
Super Member
Super Member


Joined: Jul 27, 2008
Posts: 7383
Location: south island New Zealand

PostPosted: Mon Apr 02, 2018 1:04 am    Post subject: Re: Erratic Velocity Reply with quote

bugga...guess thats a non starter then Mate...worth a go .give remainder to someone with a dirty 06 they tell me its good with heavy projectiles...who knows.....

_________________
You shot it You pluck it !
Them who eats the most duck eats the most feathers!
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Mon Apr 23, 2018 7:37 pm    Post subject: Re: Erratic Velocity Reply with quote

Elvis, maybe I was premature. I got thinking that, with the magnum primers (black), that group wasn't too bad, at least it was a basic triangle. I had 6 new cases left in the batch of brass so why not try a COAL adjustment. Adjusting COAL (distance from the lands) can be a powerful lever for fine tuning a load. Since I was already at mag length with 3.370", I tried 3.345" and 3.320" just to see if there was any improvement. Attached is the resulting target showing the group size for the 3.345" compared to the prior groups. The 3.320" was larger like the blue (non-magnum primers) so I didn't include it.

The 3.345" COAL may have promise yet. I shot the 3 shots in 20 second interval and my barrel will heat-up and start to wonder after the 2nd round if I don't let it cool down. Velocities for the 3 shot were 2968 for a low and 3002 for the high. I'll work with it some more.



superformance 145 eld-x 3.345 coal.jpg
 Description:
 Filesize:  101.86 KB
 Viewed:  522 Time(s)

superformance 145 eld-x 3.345 coal.jpg


_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
Elvis
Super Member
Super Member


Joined: Jul 27, 2008
Posts: 7383
Location: south island New Zealand

PostPosted: Tue Apr 24, 2018 12:39 am    Post subject: Re: Erratic Velocity Reply with quote

good stuff,find the sweet spot and throw away that chrony....lol.

_________________
You shot it You pluck it !
Them who eats the most duck eats the most feathers!
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Tue Apr 24, 2018 7:33 pm    Post subject: Re: Erratic Velocity Reply with quote

more to follow.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
slimjim
Super Member
Super Member


Joined: May 16, 2009
Posts: 7468
Location: Fort Worth TX

PostPosted: Tue Jun 19, 2018 8:31 am    Post subject: Re: Erratic Velocity Reply with quote

The next range session was was warmer, 88F. The grouping was not consistent with the prior session (back to 3 moa) so I'm done with this powder and bullet combination.

_________________
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein
Back to top
View user's profile
Display posts from previous:   
Post new topic   Reply to topic   Printer Friendly Page    Forum Index » Reloading Ammunition
Page 3 of 3
All times are GMT - 7 Hours
Go to page Previous  1, 2, 3



Jump to:  


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Advertisements
 


Valid CSS! Valid HTML 4.01!
Click to check if this page is realy HTML 4.01 compliant for speed :)

All logos and trademarks in this site are property of HuntingNut.com.
The comments are property of their posters, all the rest © 2011 by HuntingNut.com
Interactive software released under GNU GPL, Code Credits, Privacy Policy

.: Upgraded to DragonFly 9.2 by Dizfunkshunal :.