» Advanced

Go Back   Shooters Forum > Rifle and Rifle Cartridges > Wildcat Cartridges
Register FAQ Members List Donate Calendar Search Today's Posts Mark Forums Read



Reply
 
LinkBack Thread Tools Rate Thread Display Modes
  #1  
Old 09-19-2011, 02:59 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
well I worked up some loads for my 270-ELMO


Registered Users do not see the above ad.


this round is actualy a 270-264mag (nick named 270-elmo)

so far I have worked up loads with my 2 favorite powders


first I built the round to use Serria Hollow Point Game king in 140gr

with imr 4350 will start with 56grains work up to hopefuly some where around 62 to 63grains
data gives me a max load of 63 grains for my encore overall max will be 65 grains if i build a bolt.


with imr 3031 start with 44 grains and build up hopefuly some where around 47 to 48.5 grains
data gives me a max of 50grains

all comments welcome if you have computer program and would run these loads let me know what you come up with thanks
Reply With Quote
  #2  
Old 09-19-2011, 05:11 PM
nvshooter's Avatar
Beartooth Regular
 
Join Date: Oct 2010
Location: Nevada
Posts: 1,794
Is there one out there?

Is there a free program out there like QuickLoad? Doesn't have to be fancy; I'm just looking for something simple that will calculate a muzzle velocity, pressure and energy in a given cartridge. Thanks.
Reply With Quote
  #3  
Old 09-19-2011, 07:24 PM
UnCruel's Avatar
Beartooth Regular
 
Join Date: Nov 2004
Location: St. Louis, Missouri
Posts: 861
Since I start with .264 Magnum data when working up loads for 6.5mm WSM because the case capacity is essentially the same, it stands to reason that you could start with .270 WSM data when working on loads for your wildcat.
Reply With Quote
  #4  
Old 09-20-2011, 01:16 AM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by nvshooter View Post
Is there a free program out there like QuickLoad? Doesn't have to be fancy; I'm just looking for something simple that will calculate a muzzle velocity, pressure and energy in a given cartridge. Thanks.
i could not find one but broom_jm offered to run some loads for me
Reply With Quote
  #5  
Old 09-20-2011, 01:25 AM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by UnCruel View Post
Since I start with .264 Magnum data when working up loads for 6.5mm WSM because the case capacity is essentially the same, it stands to reason that you could start with .270 WSM data when working on loads for your wildcat.
Unc not sure who you were ansering nv or me but I started with 264 win also as I am only necking it up 13 thousands I also used the 7mm rem mag as that only has a neck size of 7thousands more than my round so I avaraged out the max load for the 7mm rem using 4 diff manuals then I averaged out the max loads for the 264win using the same manuals then split the diff called that my max load for my encore and then worked the numbers backwards for a starting point. now my hornady manual list max loads at least 3 grains higher than any other manual I have so using just that book I determined my max load but I would not run that load in my encore
Reply With Quote
  #6  
Old 09-20-2011, 04:46 AM
Beartooth Regular
 
Join Date: Sep 2009
Location: Mooresville, IN
Posts: 8,933
*** NOTE: The following contains load recipes that are not from a reloading manual and should be approached with extreme caution. Neither I, nor Shooters Forum, assume any liability for the use of this data and do not assert that it is safe. ***

BBD,

Your numbers for IMR4350 and the 140 Sierra HPGK bullet appear to be spot on, although it only gets you to about 90% fill rate. With IMR3031, your loads are a bit too conservative. According to QL, and their data for the 270-338 wildcat (essentially the same thing), you could start your 3031 loads around 47 and go to ~52. The fill rate there is less than 80%, so I like this powder even less. (Note: These data are for a bullet seated .350" deep, for a cartridge OAL of 3.372".)

You're using a magnum cartridge but not moving up to slower burning, magnum powders. I would personally choose H4831SC, 7828SSC, or RL22. With any of these, QL predicts 69 grains will give you roughly 58,000psi, so if you want to stay down around 55,000psi (very prudent with the Encore action) I would suggest dropping this another grain or two. Call 68 grains your absolute max with any of the three powders listed in this paragraph, backing off 5% for your starting load, and you should be in good shape. These powders will give >90% fill rate and with a 24" barrel, close to 3100fps, for the 140gr HPGK.

Be safe and watch for pressure signs!

NVShooter: I'm not aware of any free program that does what QL does.

Last edited by broom_jm; 09-20-2011 at 04:48 AM.
Reply With Quote
  #7  
Old 09-20-2011, 12:34 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by broom_jm View Post
*** NOTE: The following contains load recipes that are not from a reloading manual and should be approached with extreme caution. Neither I, nor Shooters Forum, assume any liability for the use of this data and do not assert that it is safe. ***

BBD,

Your numbers for IMR4350 and the 140 Sierra HPGK bullet appear to be spot on, although it only gets you to about 90% fill rate. With IMR3031, your loads are a bit too conservative. According to QL, and their data for the 270-338 wildcat (essentially the same thing), you could start your 3031 loads around 47 and go to ~52. The fill rate there is less than 80%, so I like this powder even less. (Note: These data are for a bullet seated .350" deep, for a cartridge OAL of 3.372".)

You're using a magnum cartridge but not moving up to slower burning, magnum powders. I would personally choose H4831SC, 7828SSC, or RL22. With any of these, QL predicts 69 grains will give you [COLOR="black"]roughly 58,000psi, so if you want to stay down around 55,000psi (very[/COLOR] prudent with the Encore action) I would suggest dropping this another grain or two. Call 68 grains your absolute max with any of the three powders listed in this paragraph, backing off 5% for your starting load, and you should be in good shape. These powders will give >90% fill rate and with a 24" barrel, close to 3100fps, for the 140gr HPGK.

Be safe and watch for pressure signs!

NVShooter: I'm not aware of any free program that does what QL does.
wow that is great info I expected to be a bit higher on presure considering the 264 is up in the 63,000 to 64,000 range from what I read

I forgot to mention my barrel is 27'' long
Reply With Quote
  #8  
Old 09-20-2011, 12:50 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
thanks alot broom
Reply With Quote
  #9  
Old 09-21-2011, 07:27 AM
UnCruel's Avatar
Beartooth Regular
 
Join Date: Nov 2004
Location: St. Louis, Missouri
Posts: 861
Quote:
Originally Posted by bigbuckdn View Post
Unc not sure who you were ansering nv or me but I started with 264 win also as I am only necking it up 13 thousands I also used the 7mm rem mag as that only has a neck size of 7thousands more than my round so I avaraged out the max load for the 7mm rem using 4 diff manuals then I averaged out the max loads for the 264win using the same manuals then split the diff called that my max load for my encore and then worked the numbers backwards for a starting point. now my hornady manual list max loads at least 3 grains higher than any other manual I have so using just that book I determined my max load but I would not run that load in my encore
I was answering you, the OP. I would dare say that bullet diameter has a bigger impact on pressure and velocity than does case capacity. Averaging together data from cartridges with the same case and similar bullet diameters is not a completely unreasonable way to get in the ballpark. However, the .270 WSM has the same bullet diameter and essentially the same case capacity as your wildcat, so to me it seems like a safer starting point.
Reply With Quote
  #10  
Old 09-21-2011, 01:38 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by UnCruel View Post
I was answering you, the OP. I would dare say that bullet diameter has a bigger impact on pressure and velocity than does case capacity. Averaging together data from cartridges with the same case and similar bullet diameters is not a completely unreasonable way to get in the ballpark. However, the .270 WSM has the same bullet diameter and essentially the same case capacity as your wildcat, so to me it seems like a safer starting point.
ok makes sence to me I will have to check some stats for the 270 wsw have to buy a new book all mine are a bit older just wondering about preasure though cause the barrel makers state the short mags are high preasure.

time for more research
thanks for info
Reply With Quote
  #11  
Old 09-21-2011, 06:24 PM
Beartooth Regular
 
Join Date: Sep 2009
Location: Mooresville, IN
Posts: 8,933
Quote:
Originally Posted by bigbuckdn View Post
ok makes sence to me I will have to check some stats for the 270 wsw have to buy a new book all mine are a bit older just wondering about preasure though cause the barrel makers state the short mags are high preasure.

time for more research
thanks for info
The 270WSM runs at ~64,500psi, the 264WM and 270 Weatherby (not all that different from your 'cat) runs at ~62,000psi, while the 270-338 is rated for ~59,000psi (according to QL).

Since you're using an Encore, why push the envelope and risk stretching the frame? That extra 100fps isn't going to make enough difference to justify the hottest possible loads you can get. If you really want the most velocity possible, you're better off with a magnum bolt action.
Reply With Quote
  #12  
Old 09-22-2011, 04:19 AM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by broom_jm View Post
The 270WSM runs at ~64,500psi, the 264WM and 270 Weatherby (not all that different from your 'cat) runs at ~62,000psi, while the 270-338 is rated for ~59,000psi (according to QL).

Since you're using an Encore, why push the envelope and risk stretching the frame? That extra 100fps isn't going to make enough difference to justify the hottest possible loads you can get. If you really want the most velocity possible, you're better off with a magnum bolt action.
I agree i had no plans of pushing the encore I was very happy to see your preasure readings from QL
I have to buy that program


(someday maybe build a bolt and push the round but not now )
Reply With Quote
  #13  
Old 09-26-2011, 02:31 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
dies are here barrel shipped today cant wait to get everything together
Reply With Quote
  #14  
Old 10-06-2011, 09:30 AM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
My new Barrel arrived today looks great can't wait to test it
worked up some loads sized some brass
Reply With Quote
  #15  
Old 10-06-2011, 04:59 PM
nvshooter's Avatar
Beartooth Regular
 
Join Date: Oct 2010
Location: Nevada
Posts: 1,794
Interested...

Quote:
Originally Posted by bigbuckdn View Post
...worked up some loads; sized some brass.
We want to see targets-- with holes in them. And make them holes close together...
Reply With Quote
  #16  
Old 10-06-2011, 06:09 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by nvshooter View Post
We want to see targets-- with holes in them. And make them holes close together...
yea thats what I want to see to can't test for a while though alot depends on my bow season
I know with the encore you are suposed to be able to switch barrels back and forth and not loose your zero but i just got my 7mm-08 pistol barrel dialed in for the season and i don't want to find out the hard way. but if I get lucky early with bow i will have plenty of range time
to figure it all out plus my scope bases did not yet come in dang thing is on back order

i will take some pics of the completed rounds and post them soon
Reply With Quote
  #17  
Old 10-06-2011, 06:09 PM
Beartooth Regular
 
Join Date: Sep 2011
Posts: 217
Quote:
Originally Posted by nvshooter View Post
We want to see targets-- with holes in them. And make them holes close together...
did you run any test fires with yours yet
Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
45 colt loads that fill the case 30 - 100% Kev7griz Handgun Cartridges 24 02-10-2011 11:40 AM
Light 30.06 loads Gatorfan316 Rifles and Rifle Cartridges 20 01-28-2011 07:29 PM
lbt loads for 38-210 wln and 41 270 wln oldmantoo49 Bullet Casting 0 01-18-2011 02:34 PM
270 WSM Tikka Loads mossyback Rifles and Rifle Cartridges 2 01-10-2011 05:53 PM


All times are GMT -8. The time now is 12:05 AM.

< Contact Us - Shooters Forum - Archive >

 
 

All Content & Design Copyright © 1999-2002 Beartooth Bullets, All Rights Reserved
View Privacy Policy | Contact Webmaster | Legal Information
Website Design & Development By Exbabylon Internet Solutions
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0 PL2