Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Darkness DPT


User Tag List

Results 1 to 15 of 27
Like Tree40Likes

Thread: What are you using for pressure estimation in your handloads.

Threaded View

  1. #14
    Member
    Join Date
    Dec 2019
    Location
    Okawa Hawkes Bay
    Posts
    3,193
    Greetings @Longranger,
    Thanks for your reply. Julian Hatcher spent his whole career in the US Army working in interior and exterior ballistics. He described primer appearance as practically worthless for estimating pressure in 1946. Nothing has changed since then. There are many factors including headspace that make it unreliable at best.
    Quickload estimates pressure based on velocity from what I understand and the two are linked. I think that the best data we have is the pressure tested data from the powder and projectile companies but these are kept a little low as a safety factor for variations in components and also the existence of older and supposedly weaker rifles chambered for the cartridge.
    As stated in the OP this thread was started to give me a better understanding of pressure estimating techniques in use prior to some possible articles for newbies. That is still the plan although the path to the goal is getting longer and windier.
    Next post there will be some data on my current methods.
    Regards Grandpamac.

 

 

Similar Threads

  1. Milling and range estimation for match use
    By Norway in forum Shooting
    Replies: 8
    Last Post: 10-01-2019, 12:44 PM
  2. Speed estimation.
    By Danny in forum Reloading and Ballistics
    Replies: 11
    Last Post: 29-10-2018, 08:27 AM
  3. Handloads
    By DanS in forum Reloading and Ballistics
    Replies: 16
    Last Post: 26-01-2018, 07:46 AM
  4. Not sure where to go with these handloads
    By scottrods in forum Reloading and Ballistics
    Replies: 38
    Last Post: 02-02-2015, 10:15 AM
  5. 223 handloads
    By foxhound in forum Reloading and Ballistics
    Replies: 19
    Last Post: 17-03-2014, 10:53 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!