Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Gunsmithing


Reply

looks like gases leaking past shoulder?

 
LinkBack Thread Tools Display Modes
  #22  
Old 12-08-2013, 08:06 PM
Bronze Member
 
Join Date: Apr 2013
Location: tucson az
Posts: 49
Re: looks like gases leaking past shoulder?

Quote:
Originally Posted by robert6715 View Post
Hodgdons start load for h1000 and a 225 is 104 gr. That load is for a partion, but should be close enough for your speer.

Hodgdons max load is 111 gr of h1000.

I understand being l ary of shooting it more, but dented shoulders and sooty cases are clasic light load symptoms. not enough pressure to seal the case to the chamber.

Was your chamber cut to saami spec with freebore? If so you are surely underloaded.

Hope this helps Rob
Well, dang, nothing ventured, nothing gained, I guess. I got back in my book, Hornady 8th Edition, and the load I built is on the light side of middle of the road. Online Hogdon, like you said, starts at 104, so I guess I'll try again. Seems odd Hornady published this info, but it is Hogdon powder. Reckon they ought to know. I have some other rounds with 94grs of Hybrid 100V, which is still not a hot load. Maybe better results will occur. What load do you use, Rob? As far as I know, smith used a standard reamer, I certainly did not specify any different, and from what I read, he got the reamer really quick. I've asked him about the freebore(same as throat, is that right), but never got an answer, and kept forgetting to ask again, and ultimatly decided I'd figure it out on my own. I do think the chamber is a touch short. My fl die does toggle. I had anticipated backing it f just a touch, and neck dize only till necessary to bump the shoulder
Reply With Quote
  #23  
Old 12-08-2013, 09:43 PM
Bronze Member
 
Join Date: Feb 2012
Location: Afognak Island AK
Posts: 90
Re: looks like gases leaking past shoulder?

My factory Mark V Accumark shoots the 300 gr Berger into very small groups with 98.5 gr and 100.5 gr H1000. These are right at or above max loads depending on whos data you use. ALWAYS work up to these loads.

As you can see I am shooting 4.5 gr more powder with a 75gr heavier bullet. That alone should tell you that your loads are very light.

I have never loaded anything lighter than the 250's and they were a waste of my time IMO.

Load some 104gr loads and I bet your problem goes away.

I use a 45 cal cotton mop on a pistol rod to soak up solvent from my chamber, it fits tight and works great. A wet chamber will not allow the case to grip the chamber wall, so all force is put on the recoil lugs. Which is why you were having hard bolt lift with a light load. Also could be that the load is so light that the case is not expanding enough to grip the chamber walls at all, because it is surely not expanding enough to seal out the combustion gases.

Another BIG thing to consider with a 378 WBY based case is the primer. Federal desighned the 215 at the request of Roy Weatherby for the 378. All the load data I have seen says to use federal 215's.

I dont know where the Rem 9-1/2 stacks up in comparison to the federal 215.

Hope this all helps, and look forward to your results Rob
Reply With Quote
  #24  
Old 12-09-2013, 08:40 PM
Bronze Member
 
Join Date: Apr 2013
Location: tucson az
Posts: 49
Re: looks like gases leaking past shoulder?

All you folks that chimed in here when I asked for help, wow, I can't thank you enough. Took some different ammo to the range, and, its a different gun! No problems at all. In fact, it groups fairly well, too. Still gotta bed it, and shorten the die length, but you all have made a believer outta me!! Rob, Sidecar Flip, Barnesuser, Hired Gun, everybody, thanks a lot. Till my next malady, then!
Reply With Quote
  #25  
Old 12-09-2013, 09:30 PM
Bronze Member
 
Join Date: Feb 2012
Location: Afognak Island AK
Posts: 90
Re: looks like gases leaking past shoulder?

So was it the 94gr of hybrid 100V behind a 225 that you shot?

What you have expierenced is the reason why we should always consult more than one reloading manual when starting a load. The damned lawyers got the bullet manufacturers listing there load data on the light side.

Glad you got it figured out.


Rob
Reply With Quote
  #26  
Old 12-10-2013, 12:20 AM
Bronze Member
 
Join Date: Feb 2012
Location: Afognak Island AK
Posts: 90
Re: looks like gases leaking past shoulder?

Greggc1960 If it was an ammo issue, may I suggest we ask a MOD to move this to the reloading section, where it maybe the most usefull to others.


Rob
Reply With Quote
  #27  
Old 12-10-2013, 12:39 AM
Bronze Member
 
Join Date: Apr 2013
Location: tucson az
Posts: 49
Re: looks like gases leaking past shoulder?

Absolutely. And yes, I shot the 225gr w Hybrid 100V , did the trick nicely. Thanks again, Rob
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 01:29 AM.


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