Long Range Hunting Online Magazine


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


Reply

240gr SMK + 300wm or 300 wby imp, good idea?

 
LinkBack Thread Tools Display Modes
  #1  
Old 04-05-2010, 08:11 PM
Gold Member
 
Join Date: Sep 2009
Location: McLean, Virginia
Posts: 983
240gr SMK + 300wm or 300 wby imp, good idea?

I have a relatively new 300 win mag (a month old but 140rnds down the tube) and a brand new to me 300 wby imp. I was looking into heavyweight 30cal bullets and the 240gr smk with a bc of .771 really stood out. I am thinking of loading then for the 300 wby imp, and maybe also the 300 win mag after a buddy made a comment that with the powders I'm using I would barely loose any velocity going to the heavyweights.

I have H1000, Retumbo, and N170 currently available, can get RL22, RL25, VV-N570 etc as well. So any data or starting loads with The powders I have and expected velocities would be great.

If anyone has a good idea of how much titegroup (only pistol powder I have) would be right to fireform 300 wby into 300 wby imp. I would just put some rolled up toilet paper in the neck to stop powder spillage.

Thanks,
Oliver
__________________
"Out of range" is a theoretical concept as far as I'm concerned. Send it!
Reply With Quote
  #2  
Old 04-06-2010, 08:04 PM
Gold Member
 
Join Date: Sep 2009
Location: McLean, Virginia
Posts: 983
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

someone has got to have tried one of these combos! guys?
__________________
"Out of range" is a theoretical concept as far as I'm concerned. Send it!
Reply With Quote
  #3  
Old 04-06-2010, 08:36 PM
Platinum Member
 
Join Date: Feb 2009
Posts: 3,538
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

Wish I could help but, I've never tried that combo..although I've wondered how the 240 smks would perform out of my 300 rum. Just curious what would be the intended purpose of the 240's...game/what size or paper or both? IMHO I think what you might gain in bc may be deminished by velocity loss at least in the 300wm. Be nice to know what your shooting at and how far.
Reply With Quote
  #4  
Old 04-06-2010, 08:55 PM
Gold Member
 
Join Date: Sep 2009
Location: McLean, Virginia
Posts: 983
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

i will be shooting whitetail and hogs, nothing bigger for the forseeable future. Ranges.... will see how confident i feel in my abilities and how much time i get at quantico (local 1000yrd rng). Well i definetely wont be pushing the limits of a 300 wby imp shooting a 240gr pill. If you need a number, 1200 and under.

That's what i was wondering about, well im going up 30grs in bullet weight from a 210 berger vld and gaining .8 in BC (G1).... seems like a relatively big gain for the weight.
I tried H1000 and Retumbo in my 300 win mag and got up to 83grains of retumbo into the win mag case (long throat) under a 20thou jammed 210 VLD with no pressure at all. I can get more, i now have a powder funnel with 5 1/2" drop tube, before i was using the "tornado" method
Heck i may just have to order some and give it a try.
__________________
"Out of range" is a theoretical concept as far as I'm concerned. Send it!

Last edited by Oliveralan; 04-07-2010 at 07:54 AM.
Reply With Quote
  #5  
Old 04-07-2010, 06:16 AM
Official LRH Sponsor
 
Join Date: Jul 2006
Location: Harrisburg, PA
Posts: 2,257
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

You will be better suited with the 200 grain bullets in the 300 Wby or the improved version. Depending on your twist, you may be able to shoot the 240's, but you won't have enough donkeys behind them to take advantage of the BC. Which by the way is posted at .711 not .771.
Forget the toilet paper method for fire forming. Just load them as usual and shoot during load development and they will form very well.
Reply With Quote
  #6  
Old 04-07-2010, 07:58 AM
Gold Member
 
Join Date: Sep 2009
Location: McLean, Virginia
Posts: 983
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

Thanks Joel, was a typo (but a bad one) I used the balistics profile for the 240 smk that is in my program. If I can get the 210 Berger to 3200 it matches the performance of the 240 smk at 2900. Seeing how the smk's are a lot more expensive and I already shoot the VLDs from my 300 win mag, I guess I will stay with them for the time being. May get a 50ct box of the 240s at my next midway order just to see what they do.
__________________
"Out of range" is a theoretical concept as far as I'm concerned. Send it!
Reply With Quote
  #7  
Old 04-07-2010, 08:20 AM
TH TH is offline
Silver Member
 
Join Date: Jan 2003
Location: Ohio
Posts: 304
Re: 240gr SMK + 300wm or 300 wby imp, good idea?

The 240 gr smk is a great bullet. It holds the world record at 1000 yards. I remember one of the guys from PA coming to shoot the mile match at Ohio. He was shooting a 300 weatherby improved with the 240 gr smk and shot the winning 5 shot group at a mile. If I remember correctly the group was a 6.59. I dont remember what powder he was using but the 240smk did the job and they hit hard. I currently shoot the 240 smk out of my 30-338 norma and 30-338 lapua. I have taken several elk with this round and have had great results. If most of your shots are going to be 1000yds and under i would recomend you shoot a 210 burger or 208 A max. One thing to remember is that the bigger bullet you shoot the more recoil there is going to be.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 240gr SMK + 300wm or 300 wby imp, good idea?
Thread Thread Starter Forum Replies Last Post
I thought it was a good idea roundss Humor 0 02-26-2009 12:10 PM
A good idea ? - barrel threads ds Rifles, Bullets, Barrels and Ballistics 7 09-23-2005 03:29 PM
What is a good price for 300wm sendero NIB trader388 Guns For Sale 2 03-26-2004 10:22 AM
Good idea. Gerard Schultz Long Range Hunting & Shooting 0 05-09-2001 12:34 AM

Current Poll
Do you wear hearing protection while hunting?

All times are GMT -5. The time now is 03:17 AM.


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