Parker Gun Collectors Association Forums  

Go Back   Parker Gun Collectors Association Forums Parker Forums Parker Single Barrel Trap Shotguns

Notices

Reply
 
Thread Tools Display Modes
Old 05-05-2016, 12:38 PM   #21
Member
charlie cleveland
PGCA Member

Member Info
 
Join Date: Jul 2009
Posts: 9,068
Thanks: 0
Thanked 3,912 Times in 2,137 Posts

Default

a 35 whelan would be nice....but the old 30-30 and the 35 remington are good choices too...charlie
charlie cleveland is offline   Reply With Quote
Old 05-05-2016, 09:51 PM   #22
Member
Fishtail
PGCA Lifetime
Member

Member Info
 
Join Date: Feb 2011
Posts: 786
Thanks: 63
Thanked 482 Times in 246 Posts

Default

Hmmm. I guess I wonder how a 12 ga shotgun would wind up with a .30 or .40 caliber bore? Sleeving?

Are you thinking the action isn't strong enough, or the barrel, or both? I'd think there's plenty of opportunity to make the chamber strong enough.
greg conomos is offline   Reply With Quote
Old 05-05-2016, 10:36 PM   #23
Member
Dean Romig
PGCA Lifetime
Member
 
Dean Romig's Avatar

Member Info
 
Join Date: Dec 2008
Posts: 20,041
Thanks: 15,941
Thanked 14,404 Times in 6,029 Posts

Default

xxx





.
__________________
"I'm a Setter man.
Not because I think they're better than the other breeds,
but because I'm a romantic - stuck on tradition - and to me,
a Setter just "belongs" in the grouse picture."

George King, "That's Ruff", 2010 - a timeless classic.
Dean Romig is offline   Reply With Quote
Old 05-14-2016, 01:06 PM   #24
Member
B. Dudley
PGCA Lifetime
Member
 
Brian Dudley's Avatar

Member Info
 
Join Date: Aug 2011
Posts: 6,258
Thanks: 207
Thanked 6,651 Times in 2,043 Posts

Default

Quote:
Originally Posted by edgarspencer View Post
Without a top locking lug or cross bolt, cartridge is somewhat restricted to lower velocity/ pressures. As much as I enjoy 45-70, I think a flatter shooting round is more appropriate for this type of gun. As Brian suggested, there's nothing wrong with the old timers like 30-40 (.30 US), .303 British or .300 Savage. For simplicity, I'd stick with the rimmed cartridges, but don't I wish that action could handle .375 FNE.
Edgar,
I did some calculations using Ellis Brown's formulas for building rifles on shotgun actions.

A 12g. shell with max average SAAMI pressures of 11,500psi ends up calculating to 7,086 psi of force against the breech face. That is a safe number given use of any factory 12g. load. Not talking proof loads.

I calculate the .35 Rem to be well under those pressures with force against the breech face being only 5,564 psi.

The 30-40 Krag calculates to 9,326 psi and the .32 Special is 8,441 psi.

So, based on the numbers, the .35 Rem looks like the best option.
I am sure that realistically the others would be plenty fine as well if one were to adjust the 12g calculation upwards to factor in proof pressures. But why push the envelope.
__________________
B. Dudley
www.bmdgunstocks.com
Brian Dudley is offline   Reply With Quote
Visit Brian Dudley's homepage!
Old 05-14-2016, 02:23 PM   #25
Member
edgarspencer
PGCA Member
 
edgarspencer's Avatar

Member Info
 
Join Date: Sep 2011
Posts: 3,700
Thanks: 1,305
Thanked 5,031 Times in 1,546 Posts

Default

I'm not sure about the pressures of 30-40 Krag vs. 35 Remington. The 35 Rem is a lot hotter than the Krag. I know the 8x54 Krag has a chamber pressure of 42Kpsi, and as I recall, .30US was less than 32Kpsi.

I may be wrong, but I think you're oversimplifying the problems that need to be considered in chossing a cartridge for this action. The distributed force over a smaller area increases the stress significantly. The 12ga forces are distributed over .62 sq in, but the 30US, and most similar 7mm, .30, and 8mm cases are less than .2 sq. in.
Also consider the action type; the center line distance of the SC, above the pivot point (Front lug) is close to 3/4" while most center fire cartridges are in line with a bolt face. The further away the center line deviates from the from the points restraining it, the more important a top locking lug becomes.

I love the 8x68S but I wouldn't subject it's 52,600 psi chamber pressure to an action design to restrain 12kpsi

This also does not take into account the rapid drop of of pressure is a shotshell vs distance from the chamber as opposed to the progressive burning powders where pressures are still increasing away from the chamber.

Do you recall seeing the stalking rifle in the rack at my table in Baltimore? It was a wonderful single shot in 9.3x72, and it had a single locking crossbolt, in addition to two locking underlugs. There must have been a reason for three locking points, above, and below the centerline of the cartridge.
edgarspencer is offline   Reply With Quote
Old 05-20-2016, 04:50 PM   #26
Member
BRDHNTR
PGCA Lifetime
Member

Member Info
 
Join Date: Nov 2012
Posts: 2,126
Thanks: 2,052
Thanked 1,041 Times in 495 Posts

Default

After receiving the Parker SBT from the seller in Michigan, I shipped it back. Too many issues with this SBT. Took it to Cullity's for inspection as I noted a number of issues. The ejector mechanism requires serious work, the inside of the fore end had been re-worked improperly, the top rib had several sections of non parker rib material installed (patched in)and the rib wasn't even level. Just too many issues and would have been a money sink to correct so I declined the purchase and shipped it back. I'd do better to pick up a BT-99 for all the trap shooting I do.
allen newell is offline   Reply With Quote
Old 05-20-2016, 07:20 PM   #27
Member
George Lang
PGCA Member

Member Info
 
Join Date: Mar 2013
Posts: 210
Thanks: 101
Thanked 139 Times in 67 Posts

Default

Brian have you thought about the .35 Winchester? Ballistics fall between the .35 Rem and .35 Whelen and cases are easily formed from .30-40 Krag cases. Even without max loads it puts deer and bear down instantly and psi should be similar to the .30-40
George Lang is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 03:11 AM.

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 1998 - 2018, Parkerguns.org
Copyright 2004 Design par Megatekno
- 2008 style update 3.7 avec l'autorisation de son auteur par Stradfred.