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.

DPT Night Vision NZ


User Tag List

+ Reply to Thread
Page 2 of 4 FirstFirst 1234 LastLast
Results 16 to 30 of 46
Like Tree57Likes

Thread: ADI book max’s

  1. #16
    Member
    Join Date
    Dec 2011
    Location
    NI
    Posts
    12,732
    I use 2206 with 20" barrel and 69 Targex @ 3k. So if you drop 20fps per inch for your 16" you should be able to push into the early 2900's
    Nathan F likes this.
    Out beyond ideas of wrongdoing, and right-doing, there is a field. I will meet you there.
    - Rumi

  2. #17
    Member
    Join Date
    Mar 2014
    Location
    New Plymouth
    Posts
    1,739
    I'm the same as Tahr I load 69 Targex and 2206 for just over 3k from a 20" and they shoot the same POA as the Targex 80grn which I also loaded with 2206 for just over 2800fps

    Sent from my CPH2145 using Tapatalk

  3. #18
    Member Nathan F's Avatar
    Join Date
    Dec 2011
    Location
    Deep South
    Posts
    2,300
    Quote Originally Posted by 25/08IMP View Post
    I'm the same as Tahr I load 69 Targex and 2206 for just over 3k from a 20" and they shoot the same POA as the Targex 80grn which I also loaded with 2206 for just over 2800fps

    Sent from my CPH2145 using Tapatalk
    Thank you both. Will go track down some 2206

  4. #19
    Member
    Join Date
    Mar 2014
    Location
    New Plymouth
    Posts
    1,739
    Quote Originally Posted by Nathan F View Post
    Thank you both. Will go track down some 2206
    Should be plenty around as a shipment came in a couple of weeks back

    Sent from my CPH2145 using Tapatalk
    Nathan F likes this.

  5. #20
    Member Nathan F's Avatar
    Join Date
    Dec 2011
    Location
    Deep South
    Posts
    2,300
    Yep went into town before and picked some up. Will hoon up a ladder this afternoon
    25/08IMP and Micky Duck like this.

  6. #21
    Member
    Join Date
    Dec 2019
    Location
    Okawa Hawkes Bay
    Posts
    3,046
    Quote Originally Posted by Nathan F View Post
    How lenient are book Max loads ? How longs a piece of string I guess. So I’m trying to get as much speed as possible out of my .223. I’m using the 69gn targex and have just switched powder to 2208 for more speed.
    Book max states 26.0 which is a compressed load. I’ve gone to 26.5 with slightly flattened primers but no marks. I’m using new Norma brass. The rifle is a T3x with a 16”5 inch barrel. Looking at the load data 2208 should be the fastest. Worth trying anything else ?
    Any ideas or input appreciated.
    Greetings @Nathan F,
    I am getting around 2,960 fps from the 69 grain Sierra HPBT with 25 grains of AR2206H which is as compressed as I like to use. This is in a T3x with a 570mm barrel. Before discounting the Hodgdon/ ADI data there are a couple of factors that may already be raising pressure. Hodgdon data is for Winchester cases which are one of the lighter cases at around 97 grains including fired primer. I don't have a weight for the Norma cases but Sako and Lapua both weighed around 105 grains. These cases would give more pressure with the same load as the Winchester. I also don't know the construction of the Targex projectiles. If these are anything other than a cup and core type they could push up pressure as well. Published data has a bit built in for such differences but how much? Reading some of Ken Waters Pet Loads articles he found large differences in velocity an pressure in .222 cases of different manufacture and from my weighing the .223 cases are little different. I don't have much faith in primer appearance for guessing pressure and ejector marks often mean you have gone too far already, perhaps much too far. To me 2,800 fps from that short barrel seems to be what you should expect. Perhaps it is time to add a rifle for the longer stuff.
    Regards Grandpamac.
    caberslash likes this.

  7. #22
    Member Nathan F's Avatar
    Join Date
    Dec 2011
    Location
    Deep South
    Posts
    2,300
    Right I’ve just finished. Settled on 26.5gns of 2206H. A little over max but no pressure to speak of. I wanted more speed to at least have 800 ft/lbs of energy at 300 yds which is the self imposed limit with this rifle.
    Name:  D7875CFF-172F-407D-861A-0D1100881579.jpeg
Views: 305
Size:  446.1 KB

  8. #23
    Member Nathan F's Avatar
    Join Date
    Dec 2011
    Location
    Deep South
    Posts
    2,300
    803ft/lbs at 300 yds
    7mmsaum likes this.

  9. #24
    Member
    Join Date
    Mar 2014
    Location
    New Plymouth
    Posts
    1,739
    Quote Originally Posted by Nathan F View Post
    Right I’ve just finished. Settled on 26.5gns of 2206H. A little over max but no pressure to speak of. I wanted more speed to at least have 800 ft/lbs of energy at 300 yds which is the self imposed limit with this rifle.
    Attachment 195062
    Good work now for the animal test.

    Sent from my CPH2145 using Tapatalk
    Nathan F and Borris like this.

  10. #25
    Member Nathan F's Avatar
    Join Date
    Dec 2011
    Location
    Deep South
    Posts
    2,300
    Quote Originally Posted by 25/08IMP View Post
    Good work now for the animal test.

    Sent from my CPH2145 using Tapatalk
    Hopefully next weekend wx dependant

  11. #26
    LOVE RED MIST deye223's Avatar
    Join Date
    May 2014
    Location
    Aussie vic
    Posts
    219
    ..........

  12. #27
    Member
    Join Date
    Dec 2019
    Location
    Okawa Hawkes Bay
    Posts
    3,046
    Quote Originally Posted by Nathan F View Post
    Right I’ve just finished. Settled on 26.5gns of 2206H. A little over max but no pressure to speak of. I wanted more speed to at least have 800 ft/lbs of energy at 300 yds which is the self imposed limit with this rifle.
    Attachment 195062
    Greetings again,
    That is impressive velocity, much more than I would have expected. To be on the safe side you may wish to do a little test. Take two of your cases fired with that load and load and fire them ,with the same load, two more times. If the cases will still hold a primer after that then the load should be fine. If not then a re think is needed. A friend developed a cracking good load for one of his rifles. Great velocity, wonderful accuracy and no signs of pressure. Life was good. Unfortunately none of his new cases could be reprimed due to loose pockets. Rifles have been blown up with loads that showed no signs of excess pressure, one of the reasons I tend to use velocity as an indicator of pressure.
    Regards Grandpamac.
    veitnamcam, Tentman and Moa Hunter like this.

  13. #28
    Member
    Join Date
    Jul 2012
    Location
    Invervegas
    Posts
    5,164
    Quote Originally Posted by grandpamac View Post
    Greetings again,
    That is impressive velocity, much more than I would have expected. To be on the safe side you may wish to do a little test. Take two of your cases fired with that load and load and fire them ,with the same load, two more times. If the cases will still hold a primer after that then the load should be fine. If not then a re think is needed. A friend developed a cracking good load for one of his rifles. Great velocity, wonderful accuracy and no signs of pressure. Life was good. Unfortunately none of his new cases could be reprimed due to loose pockets. Rifles have been blown up with loads that showed no signs of excess pressure, one of the reasons I tend to use velocity as an indicator of pressure.
    Regards Grandpamac.
    Hmmmm- just to put some more context around what @grandpamac is saying - if I run this load in GRT ,it predicts 2961 fps with my cases, which have a middle of the road 30 grains of water capacity. Pressure is indicated at 69030 psi, SAAMI max for 223 is 55,000 psi. If you get a case with a bit less capacity or a weak case someone could get hurt . . . .

  14. #29
    By Popular Demand gimp's Avatar
    Join Date
    Dec 2011
    Location
    The Big H
    Posts
    9,479
    I don't know if I'd place too much importance on ft/lbs; they don't seem to really correlate to meaningfully getting a bullet of suitable construction to penetrate to, and make a decent hole in, the important squidgey bits.
    25/08IMP likes this.

  15. #30
    By Popular Demand gimp's Avatar
    Join Date
    Dec 2011
    Location
    The Big H
    Posts
    9,479
    Quote Originally Posted by grandpamac View Post
    Greetings again,
    That is impressive velocity, much more than I would have expected. To be on the safe side you may wish to do a little test. Take two of your cases fired with that load and load and fire them ,with the same load, two more times. If the cases will still hold a primer after that then the load should be fine. If not then a re think is needed. A friend developed a cracking good load for one of his rifles. Great velocity, wonderful accuracy and no signs of pressure. Life was good. Unfortunately none of his new cases could be reprimed due to loose pockets. Rifles have been blown up with loads that showed no signs of excess pressure, one of the reasons I tend to use velocity as an indicator of pressure.
    Regards Grandpamac.
    The rifle blowups I'm aware of have all been the result of either using the wrong powder accidentally, or an obstructed bore.

    How do we really define "safe" ?

    A Tikka T3 action (as here) with .223 surely must have a huge safety margin of action strength, well in excess of where the brass will fail.

    The real risk here would be risking a case failure (which is hazardous in itself - especially in a T3 with the plastic bolt shroud which fragments in this event) if reloading these cases multiple times, or simply that your brass will be more or less single-use.
    Micky Duck likes this.

 

 

Similar Threads

  1. Looking for a book
    By hebe in forum Hunting
    Replies: 7
    Last Post: 16-02-2021, 08:02 PM
  2. DOC hut book use
    By akaroa1 in forum Other outdoors, sports, huts and tracks
    Replies: 24
    Last Post: 02-04-2016, 09:23 AM
  3. go to book
    By NAKIMAN2 in forum Resource Library
    Replies: 8
    Last Post: 27-05-2014, 02:05 PM
  4. New book
    By moonhunt in forum Hunting
    Replies: 0
    Last Post: 25-07-2013, 10:01 PM
  5. Which book?
    By moonhunt in forum Hunting
    Replies: 12
    Last Post: 09-12-2011, 08:42 AM

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!!