300 wm with 215 bergers

[patrick021]

It was I will post pics later if I can get it on here I am to go further later

 

[Lonewolf74]

I dont know where to get RWS, but I think Hunting Shack has Bertram, and they are very close to the same as far as strength and volume

Thanks Broz. Would you recommend the Bertram brass over Norma or any other?

 

[Trig]

Here is a couple of loads for the 300 Wm
fired from my rifle

26" krieger barrel
custom reamer .3085" freebore diameter .150" Length
stiller tac 300 action
manners T4A stock
timney 501T trigger
ACIS CIP length lower
Nosler Brass (weight 214gr)

fired from bipod with rear bag odd bench.

Warning These Loads are hot in my rifle and should be approached with caution in any rifle.

 

[Dosh]

Trig, nice groups, what Yank powder is your 2213-17 comparable to.

 

[Trig]

I believe ADI in Australia make a few powders for Hodgdon in the USA.
Here is a link for ADI powder equivalents, most are just equivalents and can not be used interchangeably.
Powder equivalents, ADI Powders Handloaders' Guide

ADI AR2217 is Hodgdon H1000
ADI AR2213SC is Hodgdon H4831SC - Note the batch to batch difference from Australia to the USA can vary.

what i have found with the 300 WM is you have to pay careful attention to the capacity of your brass as it varies greatly.
some of the brass i have here weighs
PMC 250gr approx
nosler 240gr approx
nosler 214gr approx
So putting a max charge weight of powder from a case that weighs 214gr into a case that weighs 250gr would surely have an undesirable affect...

Regards Trig

 

[Dosh]

Thanks for the link Trig.

 

[patrick021]

I shot this today it was less than 1/2 going to see what it will do at longer distances later this week

 

[patrick021]

I shot it today 7 shots was 1.950 at 300 with an es of 73 what can I do to lower this?

 

[Trig]

Need some more info,
what is the load?
was the chrony affected by sunlight?
were the shots flat or round or verticle?

 

[patrick021]

215 Berger with h1000 751/2 grs sunlight didn't affect it and shots were round

 

[patrick021]

I shot it at 400 yds got a group of 5 that measured 3.2 in . I am .060 off the lands I had a 17 ft es what can I do to get my group tighter?

 

[manybullets]

Try 4831sc had the same issue with H1000. My rifle just did not like it.

 

[FURMAN]

We need to know how you are going about your load development. You really need to do an OCW or Ladder to find the most forgiving load. I strongly suggest a ladder. While you are doing your test make note of all your velocities. If you are not already doing so you need to find the correct powder charge or seating depth before moving to the next step. After you have done this you can move to the next variable. Once you have found the powder charge and seating depth I would try tweaking the variable you started with. I have found after finding the powder charge and then seating depth tweaking the powder charge sometimes will give a better load.

 

[patrick021]

I started with 751/2 gr of h1000 bullet was seated .015 off the lands it shot the group pictured earlier at 100 yds a 5 shot group with a 50 fps es.I went out to 400 yds that group shot 3.2" same powder load but changed the seating depth to .060 off the lands out of 5 shots there was a 17 fps es. How do I do a ladder test and is there any more info that I need to get? Thanks