Preliminary results on my .284 Shehane #8

[Erik Cortina]

Re: Preliminary results on my .284 Shehane #6

Ben, adjust seating depth in .003" increments and you'll bring the vertical down.

 

[BradY]

Re: Preliminary results on my .284 Shehane #6

Ben, still think the h4350 run at 2830-2850 is going to be your saving grace. It seems most running that area have great results. But I do know of some up higher in the 2870 area with great spreads. Another option is to get a tuner and use it to help fine tune. I found good accuracy last weekend in mine, but only 2760 fps and poor spreads. Got to up the charge I think to get it burning right and reduce those spreads as they won't work at 1000 yards with such a poor spread I don't think.

 

[lawrence97]

Re: Preliminary results on my .284 Shehane #6

My straight 284 ran well with h4831sc at 2890-2900 with good ES and it ran very good with h4350 at 2870. The lower I went in my charges the greater the ES. Powder was half the equation and seating depth really made it all come together. I am no expert, but I have tested with several methods to find that great load and I believe 100-300 is a great place to tune in. I have 1000 yards at my disposal but there are a lot of variables that I could not control during testing so I have stuck with shorter ranges.

You mention a .562 group at 300. If you go back to that distance and use that same load, does it still shoot be same?

 

[ShootDots]

Re: Preliminary results on my .284 Shehane #6

!983, I know what H4350 is capable of.. Mark Walker, Walter Lange and Matt Davis all use it in their 7mmWalkers. AND I may end up there.. BUT before I do, I will run the course with H4831 and IMR 7828.. I am a FIRM believer in using the slowest powder that will do what I want it to.. There is another load that was "promising" with H4831 and I will re-visit that load...

Lawrence97, When I shot that particular load, it was not a "group that stood out", as it were. ALL the groups shot that day shot well>>>that just shot the best.. One of the "promising loads" that I referred to above in the response to !983's help, is 57.0grs BUT at 20K off the lands.. The "vertical" on that load was only 2 "bullet holes" high>>but it has a total group of 1.40 inches horizontally.. That is one I am going to re-visit...

T-rust me guys, I am not frustrated yet... I am still on a "learning curve" with a "new-to-me" cartridge. I am not pressed for time, although I want to try it in our next 1000 yard match in May. However, if it is not ready then, no biggie>>> my Dasher and or 6.5 x 47 will do just fine... As a matter of fact, if we do not have blustery conditions, either of those guns will run with anything out there>>> BUT I do want the Shehane ready>>>but only if it IS ready... I have all summer long to "learn" this round..

I love a challenge>> If you remember several months ago, I had a REAL headache with my first Dasher... However, once I learned it, I got that thing to shoot so well that it continually surprises me at what it is capable of. I will do the same here... I have had 3 / 6.5 x 47 barrels. The first one was SO NEW I had a hard time obtaining brass at first. BUT I had to get to know it>>> if I "knew" the Shehane like I know the '47, I would be in hog-heaven>> But I WILL get there.. AND the learning curve is a "fun" thing as I "see" what the cartridge is and is not doing..

BUT "tuners" are out of the question for me... I will "tune" that rifle and when I do, it will be awesome..

 

[ShootDots]

Re: Preliminary results on my .284 Shehane #7

Okay guys>>>this is it!! I made some fundamental changes in the loading since we last visited.. I have NO DOUBT of the positive effect of the changes.. Here they are:

1.) I did a load work-up with IMR 7828.. I went from 55.5grs in 3tenths intervals up to 57.3grs.. The results were an almost mirror image of what was taking place with the H4831...

2.) I finally settled on 56.8grs of the IMR "long-stick" rather than SS cut with 2910f.p.s. and literally almost no pressure. The cases come out like virgin brass and when sized, you could almost let the handle drop on the press and it would size the cases.. Excellent..

3.) I went from a .309bushing @ 2K neck tension to a .310bushing at 1K neck tension.

4.) I tried CCI 250's and Fed 210GM's.. All shot excellent.. The '250's shot 2 groups that measured 0.902 and 1.100 and the 210's shot 2 groups at 1.125 and GET THIS 0.402inches... ALL the loads shot inside 11ft E.S.'s..

Bye the way: the 0.402 /5 shot 300 yard group is my personal best.. I R-E-A-L-L-Y thought I shot my FIRST group in the 0.3's at 300 yards but not yet... I can NOT BUY a 0.300 inch group out there... I have had "more than a few" in the 0.400+ range>>but none down in the 3's!...

Tomorrow, I will go out to 1000 yards, however, I am very certain of the results I will get... BUT the only way to know FOR SURE is to go out and find out..

This will effectively end this thread... Thanks for all your support and input, it has been greatly appreciated..

 

[Dgd6mm]

Re: Preliminary results on my .284 Shehane #7


Ben, thank you for your documentation on your Shehane. I have 1 here that I bought from doubleg and have not pulled the trigger on it yet. I've been following your thread closely. I talked to Donnel on the phone and he gave me load info and I believe I will use IMR7828, or the SSC.

 

[ShootDots]

Re: Preliminary results on my .284 Shehane #7

Ben, thank you for your documentation on your Shehane. I have 1 here that I bought from doubleg and have not pulled the trigger on it yet. I've been following your thread closely. I talked to Donnel on the phone and he gave me load info and I believe I will use IMR7828, or the SSC.

You are quite welcome... I believe that there are 2 powders that are absolutely in the perfect burn rate range for the Shehane with 180gr bullets... They are IMR 7828 (either version) and VV N165... Remember IMR 7828, although not an "extreme" powder, is pretty temp stable, especially if not run to the ragged edge... Good luck with your Shehane, I believe you will love it!!

 

[ShootDots]

1000 YARD RESULTS: I took 1 load out to 1000 yards today using 2 different primers that were BOTH successful at 300 yards yesterday...

15 Shots (3 groups of 5) with CCI 250's and 10 shots (2 groups of 5) with Fed 210GM's...

Results:

1.) CCI 250's: horizontal spread was only about 3 or so inches.. However, the vertical was about 11" total with the BULK of the 15, say about 9 or 10 shots in "about" 6 inches...

2.) Fed 210 GM's: horizontal spread was just about 4" wide and the total group was 7" vertical.. BUT 1 shot went straight up giving me the 7" total group. The OTHER 9 were in a nice round 4.5 inch circle!!

Now some of the vertical was from BAD heat waves>>> BUT since the Fed 210's gave me the best 1000 yard groups I ever had, I believe I will be sticking with them... I HONESTLY believe that if we would have had cloud cover and the heat waves kept to a minimum OR non-existent, my FED 210GM group would have been more like 3inches for those 9 shots! Whether or not the 1 shot that opened the group up to 7" was from heat waves, I'll never know.. But to say I am pleased is an UNDERSTATEMENT!!! NOW here I come 1000 yard shooters!! LOL!!!

 

[Erik Cortina]

Sounds good Ben. Looks like you will be competitive anytime there are no heat waves in Houston!

 

[Raythemanroe]

ha ha, sorry but that was funny

Ray

 

[ShootDots]

Sounds good Ben. Looks like you will be competitive anytime there are no heat waves in Houston!

If there were no heat waves in Houston, that rifle would be untouchable... With the heat waves, you will have to still reach a long way to beat the accuracy that THE BARREL I BOUGHT FROM YOU DELIVERS!!! Just be at the 1000 yard match this May...

 

[Erik Cortina]

I'll do my best to be there.

 

[6mmcldasher]

I'd like to thank all you fella's for the great info. this should be in the sticky's.

I had a shehane built this winter and started load dev just as Ben was finishing his , You saved me a lot of time and components.
I don't think I would have tried 7828 without this info.
I quickly found a load window between 56.0 & 56.5 but it's a little on the fast side running at 2975 , 2985. I took it up 56.8 and was over 3000fps
with no signs of pressure. 7828 is working great. groups are all under 1" at 300yds
Again thanks for the info
Darrell

.

 

[ShootDots]

I'd like to thank all you fella's for the great info. this should be in the sticky's.

I had a shehane built this winter and started load dev just as Ben was finishing his , You saved me a lot of time and components.
I don't think I would have tried 7828 without this info.
I quickly found a load window between 56.0 & 56.5 but it's a little on the fast side running at 2975 , 2985. I took it up 56.8 and was over 3000fps
with no signs of pressure. 7828 is working great. groups are all under 1" at 300yds
Again thanks for the info
Darrell

.

Thanks Darrell... The shooters like yourself are exactly the reason why I started the thread.. To help people out by giving them the "step-by-step" process with the results.. That way others can get to where they need to be in A LOT less time using A LOT less components! It had been my hope that by starting such a thread, others would grasp the concept and do something on the same order with whatever cartridge they are developing! It sure would be helpful.. Thanks again Darrell...