Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

308 win and the berger 215

 
LinkBack Thread Tools Display Modes
  #15  
Old 10-10-2013, 10:35 PM
Silver Member
 
Join Date: Dec 2001
Location: Canyon Ferry, MT
Posts: 245
Re: 308 win and the berger 215

Canadian Bushman,

I'd definitely go 1/10 twist for the heavies. Also for the 215 Berger, I'd throat for about 3.10" oal. That leaves abour .315" of bearing surface in the case neck, or just about to the neck/shoulder juncture.

Yes I made 2600 fps with 215s, in a 26" bbl, with RL17, moly, and a 3.10" oal.

Details here:

215gr Berger Hybrid in the 308Win

I had a small number of bullets and didn't get past the 100 yard line in my limited test.

But, I've had good results with the following in a 1/12 20.5" 308, all shot out to past 1000 yards, even some crazy plinking out to a mile+,

208 AMax
210 Berger
215 Berger
220 SMK
225 Hdy BTHP.

All the above I moly'd, loaded to 2.9-3.1" oal in Win brass, and charged with 48-50 gr of RL17. Velocities ranged from 2500-2620 fps.

I'm only using the 1/12 barrel as it is the factory tube, 1/10 would be mt choice if going custom.

Shane
Reply With Quote
  #16  
Old 10-10-2013, 10:40 PM
Silver Member
 
Join Date: Mar 2012
Location: Bozeangeles
Posts: 161
Re: 308 win and the berger 215

I copied montanamarine's loads- minus the moly- in my 11 twist Tikka & have been pretty darned happy with it. This load shoots .4-.7 moa & has given me consistent hits out to 1000 yards.
48.5 grains of R-17 in CBC brass (it was free!), 3.004" COAL, br2 primers, 208 Amax, 2640 fps with extremely low es

I'm not sure what the difference in bearing surface is between the Amax & the 215, but I'd love to try em out! Long seating heavies in the tikka is like cheating- modify the bolt stop, buy a long mag, and run em as long as you dare. I don't know if I'd be as wild about them if I had to single feed, though...
Reply With Quote
  #17  
Old 10-10-2013, 10:59 PM
Silver Member
 
Join Date: Dec 2001
Location: Canyon Ferry, MT
Posts: 245
Re: 308 win and the berger 215

Your Tikka is a real sweet rig!

You were beating up the 1000 yard steel in Townsend!
Reply With Quote
  #18  
Old 10-11-2013, 06:00 AM
Gold Member
 
Join Date: Jan 2012
Location: Houston, Texas
Posts: 770
Re: 308 win and the berger 215

Shane,

Your results have convinced me to re barrel the 308 for the 215 hybrid. I think if i can keep it faster than 2500 fps i will have a good 1k gun. Something i thought the 308 just couldnt be.

What should i use for a starting load?

How big of a contributing factor do you think the moly is?
Reply With Quote
  #19  
Old 10-11-2013, 10:16 AM
Silver Member
 
Join Date: Dec 2001
Location: Canyon Ferry, MT
Posts: 245
Re: 308 win and the berger 215

You'll have no trouble getting over 2500 fps, especially with a 28" bbl.

Starting load of 44gr RL17 should be very safe. I'd work up in .5gr increments.

Moly definitely reduces friction/pressure, so it does allow a bit more powder/velocity. At the end of the day, it's probably going to gain you 30-50 fps in the 308/215 combo.

There are so many variables in chamber/throat/bore.brass, etc that it's hard to know where you will end up.

My 49 gr load seemed fine in my rifle, but keep in mind mine is a factory Remington with a very long throat, 3.10" oal was still off the lands about 10/1000". Also Win brass is about the highest volume 308 brass out there, and moly reducing friction. Basically I have a few different variables stacked in my favor regarding safe charge and velocity potential. Another rifle/brass combo might top out at 46-47 gr. You just don't know till you work with it.

Shane
Reply With Quote
  #20  
Old 10-11-2013, 12:42 PM
Gold Member
 
Join Date: Jan 2012
Location: Houston, Texas
Posts: 770
Re: 308 win and the berger 215

Shane

Thanks a lot. I really appreciate the input. Im gonna try and get a barrel on its way.
Ill talk to the guys at lilja and see what they recommend for a throat length, because i dont want to get it too far out there and have trouble reaching the lands with a lighter bullet if i decide to go that way.

How did you find the recoil of the 215's or even the 208 amaxs to be?
Also do you have any info on temp sensitivity of re 17?
Reply With Quote
  #21  
Old 10-11-2013, 05:07 PM
Silver Member
 
Join Date: Dec 2001
Location: Canyon Ferry, MT
Posts: 245
Re: 308 win and the berger 215

Something to consider when you spec your throat is that if it's shorter, you will have to seat the heavies further and reduce your useable case volume.

Recoil, well I've got brakes on my 308s. I've shot them without, and recoil increase over a 155 Scenar is significant. It's no 300 RUM or even close, but a noticeable increase for sure.

RL17 is fairly temp sensitive in my experience. I lost about 30-40 fps from 80F to 40F...roughly 1 fps per degree. Haven't chrono'd down around zero or lower.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Do you wear hearing protection while hunting?

All times are GMT -5. The time now is 11:26 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC