300WM and 215 Berger col 3.34

[wboggs]

Looking for best powders when loadingthe 215 berger to 3.34 magazine length
I realize a longer oal of 3.56 is optimal but my friend's factory magazine/throat will not allow it.
Thanks
Bill

 

[Orr89rocz]

edit thought i read wsm

For wm i did H1000

 

[762plinker]

my 300 wm and 220's and rl23 did fine but LOOOOONG, NOT MAG LENGTH
1000 AND 23 WOULD BE MY PICKS AND 23 TOP

 

[Walt Krafft]

If loading to that short mag length, pick a different bullet.

 

[wboggs]

If loading to that short mag length, pick a different bullet.

What would you choose?

 

[Walt Krafft]

What purpose?

 

[Orr89rocz]

What would you choose?

What is it used for? 180-190 gr range may be nice. Guys are liking the 185 juggernaut even as a hunting bullet. With the velocity gained it’s probably a better choice to 700-800 yards anyway. I assume mag lengthis for hunting

 

[coldboreshot]

Looking for best powders when loadingthe 215 berger to 3.34 magazine length
I realize a longer oal of 3.56 is optimal but my friend's factory magazine/throat will not allow it.
Thanks
Bill

I'm using H1000 eith my Berg. 215s. Mine are 2.287" cartridge base to ogive in my barrel. There are in the lands .017". Load runs great.

 

[Walt Krafft]

I'm using H1000 eith my Berg. 215s. Mine are 2.287" cartridge base to ogive in my barrel. There are in the lands .017". Load runs great.

This is an excellent load but way longer than a 3.340 magazine will swallow.

 

[wboggs]

What purpose?

Steel shooting up to 1500 yards

 

[Orr89rocz]

Steel shooting up to 1500 yards

Its it recreationally or some kind of competition requiring rapid rounds downrange? If not competition why not single feed

 

[coldboreshot]

This is an excellent load but way longer than a 3.340 magazine will swallow.

Consider emulating a Fed GM or Blackhills 300wm load utilizing the Sierra 190 MK. It too runs well with H1000.

 

[wboggs]

Its it recreationally or some kind of competition requiring rapid rounds downrange? If not competition why not single feed

Can single feed. Will measure throat so the oal length can be increased

 

[barefooter56]

Steel shooting up to 1500 yards

As stated previously. If you are shooting out to that range. Load the round long and use in a "single shot" mode. A general rule of thumb with the Berger Elite Hunter and Hybrid Target bullets is to start your bullet seating depth testing at .015" off the lands. Then you work back into the cartridge case in .015" increments (.015",.030", .045", .060"). When you find a bullet seating depth that shows promise, you can test .005" to either side of that CBTO if you wish to see if accuracy can be improved. All bullet seating depth testing is done using the starting powder charge!

 

[wboggs]

Consider emulating a Fed GM or Blackhills 300wm load utilizing the Sierra 190 MK. It too runs well with H1000.

You figure this is about the max weight/BC bullet that can be used at 3.34 oal?

 

[wboggs]

As stated previously. If you are shooting out to that range. Load the round long and use in a "single shot" mode. A general rule of thumb with the Berger Elite Hunter and Hybrid Target bullets is to start your bullet seating depth testing at .015" off the lands. Then you work back into the cartridge case in .015" increments (.015",.030", .045", .060"). When you find a bullet seating depth that shows promise, you can test .005" to either side of that CBTO if you wish to see if accuracy can be improved. All bullet seating depth testing is done using the starting powder charge!

Thanks for the info. Will do when I measure throat length.

 

[coldboreshot]

This is an excellent load but way longer than a 3.340 magazine will swallow.

Understood. I was expressing that I uae H1000 for my setup which should run equally as well for a 300wm in a 3.34 setup.

 

[coldboreshot]

You figure this is about the max weight/BC bullet that can be used at 3.34 oal?

You could look at the 220 Sierra MK. Its utilized in the Mk248 mod1. Larger weight mean longer projectile. For 3.34 mag, depends how deep you can run them. H1000 still should accomodate as a powder selection. Sorry, my history revolves around the CIP mag lengths.

 

[762plinker]

You could look at the 220 Sierra MK. Its utilized in the Mk248 mod1. Larger weight mean longer projectile. For 3.34 mag, depends how deep you can run them. H1000 still should accomodate as a powder selection. Sorry, my history revolves around the CIP mag lengths.

yes but my 300 win mag m13 clone shoots a berger 230 with rl23 much better than the sie 220 and h1000. been there done that.big diff at 1000 plus yards

 

[coldboreshot]

yes but my 300 win mag m13 clone shoots a berger 230 with rl23 much better than the sie 220 and h1000. been there done that.big diff at 1000 plus yards

Glad it works for you