March
S M T W T F S
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Who's Online Now
6 members (Roundsworth, Argo44, RWG, 3 invisible), 352 guests, and 2 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums10
Topics38,374
Posts544,002
Members14,391
Most Online1,131
Jan 21st, 2024
Previous Thread
Next Thread
Print Thread
Page 2 of 3 1 2 3
battle #594360 03/23/21 02:02 PM
Joined: Aug 2009
Posts: 56
Likes: 37
Sidelock
Offline
Sidelock

Joined: Aug 2009
Posts: 56
Likes: 37
The .410 is a 67 gauge...it's a long, long way from 0.410 to 0.525...

1 member likes this: John Roberts
battle #594371 03/23/21 02:49 PM
Joined: Feb 2002
Posts: 331
Likes: 6
Sidelock
**
Offline
Sidelock
**

Joined: Feb 2002
Posts: 331
Likes: 6
The bores on my 2003 Poli 32 measure 0.510".
The chokes are supposed to be IC/Mod. The 32 bore chokes are too big for my .410 measures and too small for my 28 ga. I have patterned it. It is spot on.

Joe

battle #594381 03/23/21 05:03 PM
Joined: Mar 2002
Posts: 7,693
Likes: 450
Sidelock
**
Offline
Sidelock
**

Joined: Mar 2002
Posts: 7,693
Likes: 450
We can do math. If it starts out at .410 bore and needs to end up with a new bore of .510 how much wall thickness needs to be removed? Audience say .050 from each wall for a total of .100. So does your .410 have walls .050 plus another .025? Call it .075 walls to keep the math simple. If they are .040, which would be heavy and thick as heck, you are still going to break through .010 too soon and have infinity walls.

Now for the real math question. If train A leaves the station heading due north at 80 miles per hour and train B leaves the station heading East at 60 miles an hour how long before they meet? I actually had this question on an exam decades ago. There is an answer that I got correct. No one else did and I always thought the question was a test of how dumb the prof was.

battle #594472 03/25/21 12:35 PM
Joined: May 2008
Posts: 76
RDD Offline
Sidelock
*
Offline
Sidelock
*

Joined: May 2008
Posts: 76
I've heard .410 is closer to a 36.5 gauge...


[Linked Image from secureimg.stitcher.com]
battle #594482 03/25/21 03:19 PM
Joined: Mar 2002
Posts: 7,693
Likes: 450
Sidelock
**
Offline
Sidelock
**

Joined: Mar 2002
Posts: 7,693
Likes: 450
.410 is 67 to 67.5 gauge.

Last edited by KY Jon; 03/25/21 03:20 PM.
battle #594487 03/25/21 04:28 PM
Joined: Jan 2002
Posts: 5,883
Likes: 106
Sidelock
***
Offline
Sidelock
***

Joined: Jan 2002
Posts: 5,883
Likes: 106
Back in the early years of the .410-bore here in North America our ammunition manufacturers called it the 36-gauge --

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

battle #594509 03/25/21 10:57 PM
Joined: Jun 2002
Posts: 2,264
Likes: 93
battle Online Content OP
Sidelock
**
OP Online Content
Sidelock
**

Joined: Jun 2002
Posts: 2,264
Likes: 93
Yeah I’ve never heard it called 67 gauge.

battle #594514 03/26/21 07:05 AM
Joined: Jan 2002
Posts: 13,127
Likes: 1127
Sidelock
**
Offline
Sidelock
**

Joined: Jan 2002
Posts: 13,127
Likes: 1127
A .410 pure lead ball weighs 103.4 grains. There are 7000 grains in a pound.

7000 divided by 103.4 = 67.69825918

Thus, a .410 is a 67.7 ga. (rounded up)


May God bless America and those who defend her.
battle #594515 03/26/21 07:52 AM
Joined: Dec 2020
Posts: 886
Likes: 351
Sidelock
Offline
Sidelock

Joined: Dec 2020
Posts: 886
Likes: 351
The term 36 bore or gauge is still sometimes used in Europe, particularly in Italy.

It seems to have sprung from a desire to have a “tidy” numerical progression , 20 to 24 to 28 to 32 to “36”, whilst ignoring the scientific basis of number of lead balls of that diameter to the pound represented by the other bore sizes.

Perhaps the gun and cartridge manufacturers felt that buyers would think a 36 bore would have more poke than a 67 bore, and would sell better?

battle #594518 03/26/21 08:36 AM
Joined: Dec 2020
Posts: 886
Likes: 351
Sidelock
Offline
Sidelock

Joined: Dec 2020
Posts: 886
Likes: 351
A thought ( probably not worth the time typing it out?).

On the introduction of the Firearm Certificate in the UK for rifled cartridge arms many Rook and Rabbit rifles were bored out to .410 shotgun for which no Certificate was then needed.

Whilst that seems sad now it at least saved them from immediate destruction. Many were not, however saved from the combined effects of the late introduction by Eley in the late ‘50s or early 60’s of non-corrosive .410 cartridges and an apparent reluctance to clean .410 guns.

Many are now deeply pitted, both in chambers and bores. If they retain the original barrel profile they can be worthy candidates for re-lining to an original or modern small game round such as .32/20.

Others have had the forward portion of the barrel tapered or turned down. They may well retain enough metal to clean up to 32 bore if nor to ( more sensibly) 28 bore.

All of which is likely to cost far more that buying a brand new .410 Baikel. As I said at the start ....

Page 2 of 3 1 2 3

Link Copied to Clipboard

doublegunshop.com home | Welcome | Sponsors & Advertisers | DoubleGun Rack | Doublegun Book Rack

Order or request info | Other Useful Information

Updated every minute of everyday!


Copyright (c) 1993 - 2024 doublegunshop.com. All rights reserved. doublegunshop.com - Bloomfield, NY 14469. USA These materials are provided by doublegunshop.com as a service to its customers and may be used for informational purposes only. doublegunshop.com assumes no responsibility for errors or omissions in these materials. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANT-ABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. doublegunshop.com further does not warrant the accuracy or completeness of the information, text, graphics, links or other items contained within these materials. doublegunshop.com shall not be liable for any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of these materials. doublegunshop.com may make changes to these materials, or to the products described therein, at any time without notice. doublegunshop.com makes no commitment to update the information contained herein. This is a public un-moderated forum participate at your own risk.

Note: The posting of Copyrighted material on this forum is prohibited without prior written consent of the Copyright holder. For specifics on Copyright Law and restrictions refer to: http://www.copyright.gov/laws/ - doublegunshop.com will not monitor nor will they be held liable for copyright violations presented on the BBS which is an open and un-moderated public forum.

Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.0.33-0+deb9u11+hw1 Page Time: 0.086s Queries: 36 (0.064s) Memory: 0.8464 MB (Peak: 1.8988 MB) Data Comp: Off Server Time: 2024-03-28 17:19:06 UTC
Valid HTML 5 and Valid CSS