Dewey passed along the flat spot load development method to me . I gave it a try one one rifle , and I'm in the middle on rifle #2 . it seems to work well and is a fast and easy way to get the rifle shooting . here is the velocities and the powder charge . 70.0 grains looked to be where I wanted to be . this is a new powder and bullet combo for this rifle .
I tried the flat spot load development
- Thread starter jimbires
- Start date
- Thread starter
- #2
- Thread starter
- #3
- Thread starter
- #4
truck driver
Ammo Smith
- Mar 11, 2013
- 7,319
- 880
See just like me, an old dog can learn new tricks. :grin:
That is interesting and I will watch for more testimonials. Over the years I've had some crazy good groups with not consistent velocity and some not-so-great groups with unbelievably consistent velocity.... but I can sure understand how the flat spot probably gives you room for changes in temperature during your hunting day.
I once read a post from a guy that seemed pretty sharp about Barrel nodes and Barrel movement.... it was his theory that the best load is one where your Barrel is moving upward slightly. The theory is a little faster bullet speed on a certain cartridge will exit the barrel before it has moved upward and a bullet with a little slower speed will exit as the barrel is upward and can drop back into the group later because of it slightly slower speed. Now if somebody could tell me what tools we need to determine if your Barrel is on a slightly upward mode I will be all ears!
I once read a post from a guy that seemed pretty sharp about Barrel nodes and Barrel movement.... it was his theory that the best load is one where your Barrel is moving upward slightly. The theory is a little faster bullet speed on a certain cartridge will exit the barrel before it has moved upward and a bullet with a little slower speed will exit as the barrel is upward and can drop back into the group later because of it slightly slower speed. Now if somebody could tell me what tools we need to determine if your Barrel is on a slightly upward mode I will be all ears!
TackDriver284
Handloader
- Feb 13, 2016
- 2,534
- 2,056
jimbires":uvw2o2za said:
Selecting the charge in the middle between the two would be best. One thing got me thinking, if it was the dog days of summer when its real hot, would you stay on the high end of that flat spot so when winter comes, you would be on the low end of the flat spot, so your POI won't have any affect, correct?
Cleveland48
Handloader
- Jul 28, 2015
- 1,972
- 165
Glad you had good luck with it! I'll be using it for all my new loads now. So much faster than the OCW method, and a lot less bullets too!
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
- Thread starter
- #13
rifle #2 is my Tikka 7mm-08 . the load I've been using is 43.2 gr , so I've been right at the high end of the node . right now it doesn't look like dropping down to 42.9 would change much velocity wise . I shot this last evening , it was a nice 68*F out , but that's still warm for PA's hunting season . I'll have to save all this info and try to do more testing in colder temps . next I'm going to load up at 42.9gr and test seating depth . the rifle has been shot a fair amount , and I can't remember what the jump was when I worked the load I'm using . so I might get it shooting better by adjusting seating for throat wear . now I'm seating at the sammi spec of 2.800 , this gives me a .025 jump with this bullet.
rifle #1 is my 7 rem mag it's a good shooting rifle that I decided to try a new powder RL26 , and a new bullet hornady 154 interlock flat base # 2830 . as far as hunting goes I'd hunt with that load right now , 3100 FPS and under an inch , that'll kill deer all day long .
you guys are right , it puts you on a load pretty darned quick . I worked a new load , and kind of confirmed an old load . yes I will use this method again . thanks for sending me the info on how to do this . Jim
I posted the wrong target above , this is the best group so far 70 gr of RL26 with a .030 jump . this is the shortest COAL I loaded , I might try going .005 shorter yet just to see what it does .
rifle #1 is my 7 rem mag it's a good shooting rifle that I decided to try a new powder RL26 , and a new bullet hornady 154 interlock flat base # 2830 . as far as hunting goes I'd hunt with that load right now , 3100 FPS and under an inch , that'll kill deer all day long .
you guys are right , it puts you on a load pretty darned quick . I worked a new load , and kind of confirmed an old load . yes I will use this method again . thanks for sending me the info on how to do this . Jim
I posted the wrong target above , this is the best group so far 70 gr of RL26 with a .030 jump . this is the shortest COAL I loaded , I might try going .005 shorter yet just to see what it does .
Attachments
- Thread starter
- #17
Cleveland48
Handloader
- Jul 28, 2015
- 1,972
- 165
Get on the 6.5 Guys Facebook page or website. They have a video on it. Very easy way to get accurate loads without using to much powder and bullets.otter25":2o05x7sp said:
Sent from my iPhone using Tapatalk
TackDriver284
Handloader
- Feb 13, 2016
- 2,534
- 2,056
http://www.65guys.com/10-round-load-dev ... dder-test/otter25":2wmy4wrx said:
