Long Range Hunting Online Magazine


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

Reloading Techniques For Reloading


Reply

Extreme spread

 
LinkBack Thread Tools Display Modes
  #1  
Old 02-05-2005, 06:30 AM
 
Posts: n/a
Extreme spread

Any help appreciated
I am reloading a .222 x 45 degree improved.
Norma cases which are very consistent.
Using a neck sizer and expander ball to .001 under loaded diameter.
Not neck turning - but have all this gear on order.
Do not have neck bushing sizer.
use sliding collet projectile seater.
Measuring each powder charge of appropiate burn rate powder.
tried 3 different primers - Fed 205M; CCI BR4 and Winch SR.
I am getting excesive velocity extreme spreads with 53 SMK and 55 VMax which are my preferred projectiles.
Tried different seating depths.
WHY?????????

APB
Reply With Quote
  #2  
Old 02-05-2005, 07:43 AM
dcb dcb is offline
Bronze Member
 
Join Date: Jun 2004
Location: Ohio
Posts: 47
Re: Extreme spread

What barrel twist?
Just a guess but have you tried lighter bullets.
It could be, not enough tension on the bullet, especially if there is a fair ammount of jump to the lands.
if I load light tension i seat into the lands. with the bullet jammed i have a good burn on the powder,
Also I have found that stick powders work better in my duece
Reply With Quote
  #3  
Old 02-05-2005, 09:16 AM
Platinum Member
 
Join Date: Sep 2004
Location: on the rifle range in Utah
Posts: 2,723
Re: Extreme spread

Try what dcb said and also switch powders. Try some H322, or Benchmark. The right powder for the gun can make all the difference. The duece improved should not be finicky with powders though, so it may be something more serious. What is the condition of your barrel?
__________________
Find it
Range it
Click it
Pull it
Dump it

If it's not far, it's boring.
Reply With Quote
  #4  
Old 02-05-2005, 05:44 PM
 
Posts: n/a
Re: Extreme spread

dcb/goodgrouper
Thanks for your input. I have just had a new 1/12 Lilja installed on this rifle. The twist rate was chosen to shoot the 55 VMax projectiles. It is a 6 groove - I ordered a 3 groove but their 3 groove button broke and it was going to take several months extra wait.
I have found from experience with previous barrels that the best combination of accuracy and velocity is achieved with a powder made here in Australia by Mulwex. It is called Benchmark 1 and I am unsure whether this is similar to the powder you mention. It is a stick powder and one of it's great benefits is that it is not temperature sensitive. I know Mulwex exports powder to the USA but I think it is sold under another brand name over there. Maybe Hodgon's??
I have a mild entry to the throat of 1 degree 30 minutes and tried different seating depths yesterday.
Seated to touch lands or zero jump ES was 64fps and 96 fps on 2 separate 5 shot groups.
Seated .015 into lands ES did drop to 39fps but accuracy was so so and I need to check again. This COL is not entirely satisfactory as it is too long for my magazine.
As a trial [chasing an accuracy issue also] I loaded 5 at .030 into lands which jumped back up to 60fps ES. Velocities increased as expected with resultant pressure increases.
The initial tests have been at 110 yds and tracking the group formation shows that the extreme velocity deviation rounds are not the fliers. I know that the longer ranges will start to show a difference however and I want to reduce this erratic ES.
APB
Reply With Quote
  #5  
Old 02-05-2005, 07:19 PM
SPONSOR
 
Join Date: Mar 2003
Location: N.GA
Posts: 133
Re: Extreme spread

change brand of brass.
__________________
A Bullet Smith...
Reply With Quote
  #6  
Old 02-05-2005, 07:42 PM
Platinum Member
 
Join Date: Sep 2004
Location: on the rifle range in Utah
Posts: 2,723
Re: Extreme spread

I am afraid that at this point, you have to enter into the process of elimination to find the culprit.
Brass, bullets, powders, seating depths, primers and so on. You might need a total load overhaul, and even then it might not fix. I had a .220 swift that shot 1/4" groups at 100 yards all the time, but I could never ever get the sd down below 20. I tried every trick in the book and no luck. I did proceed to kill chucks out to 700 yards though so I guess it wasn't too bad. But I know what you're going through and it is frustrating. Keep us up to date on your experiments!
__________________
Find it
Range it
Click it
Pull it
Dump it

If it's not far, it's boring.
Reply With Quote
  #7  
Old 02-06-2005, 01:46 PM
dcb dcb is offline
Bronze Member
 
Join Date: Jun 2004
Location: Ohio
Posts: 47
Re: Extreme spread

couple more questions, the norma brass that you use how many times have you fired it and with how many diffrent loads/powders?. if its all new brass. it could be that it need be fire formed to your chamber before you start load developement. then if it is fire formed with a few diffrent loads and the brass is mixed you could be getting diffrent internal volumes? Are you using Moly?? I have been using 26.5 grs, WW760 powder,WW primers seated 2.702" to the Ojive with a 40gr vmax in my sako, it likes a lot of jump. this is a slightly compressed load very consistent SDis 8.7, only thing it's a little dirty.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Extreme spread
Thread Thread Starter Forum Replies Last Post
how to reduce velocity extreme spread? rufous Reloading 28 12-28-2011 07:40 PM
Extreme Spread Austy Reloading 7 10-25-2010 10:31 PM
Extreme Spread? Firecat Rifles, Bullets, Barrels and Ballistics 14 09-22-2010 11:53 AM
Tweaking the Extreme Spread ES su37 Rifles, Bullets, Barrels and Ballistics 0 06-11-2009 10:05 AM
Extreme spread Reloading 6 04-24-2007 07:12 AM

Current Poll
Are you on Facebook?
Yes - 46.37%
1,117 Vote
No - 19.55%
471 Votes
No, but I may join - 1.78%
43 Votes
No way, are you kidding? - 36.03%
868 Votes
Total Votes: 2,409
You may not vote on this poll.

All times are GMT -5. The time now is 05:12 AM.


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