Javascript DHTML Drop Down Menu Powered by dhtml-menu-builder.com
Welcome, Guest. Please login or register.
Did you miss your activation email?
November 22, 2017, 12:27:06 am

Login with username, password and session length

Search:     Advanced search
* Home FlashChat Help Calendar Login Register
Currently there are 0 Users in the Cas City Chat Rooms!
Cas City Forum Hall & CAS-L  |  CAS TOPICS  |  The Powder Room - CAS reloading (Moderator: Professor Marvel)  |  Topic: Trail Boss .44-40 loads chronigraphed 0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Trail Boss .44-40 loads chronigraphed  (Read 521 times)
Tuolumne Lawman
CAS-L Ghost Rider
Top Active Citizen
*
Offline Offline

Posts: 1829


Grass Valley, CA in the Sierra Nevada Mountains


« on: August 20, 2017, 08:01:19 pm »


I had seen published data for .44-40 loadings with a 200 grain RNFP over 6.5 grains Trail Boss giving 1015 fps, and 6.0 giving about 960ish from a 24" Uberti barrel..  I thought I would try my 7.0 grains Trail Boss (with a 200 grain bullet).  Average was  for 5 was 1092, with a low of 1025 and a high of about 1130.  It is about what I expected.

Since I am no longer shooting 44-40 from pistols, I think I will bump it up to 7.5 grains.  That should be about 1130 fps.  That duplicates 44 Henry in my Uberti 1860 Henry, and also about duplicates Black Hills 44-40 ballistics.  It is well below maximum using their "full case of Trail Boss to bottom of bullet without compression" being max (and then back off 30% for starting load) method.
Logged

TUOLUMNE LAWMAN
CO. F, 12th Illinois Cavalry  SASS # 6127 Life * Spencer Shooting Society #43 * Motherlode Shootist Society #1 * River City Regulators
Cliff Fendley
NCOWS
Top Active Citizen
***
Offline Offline

Posts: 2901



« Reply #1 on: August 21, 2017, 07:10:23 am »

I've never seen published data for higher than 6.5 grains of trail boss under a 200 grain bullet.
Logged

http://www.fendleyknives.com/

NCOWS 3345  RATS 576 NRA Life member

Johnson County Rangers
August
Deputy Marshal
Top Active Citizen
*
Offline Offline

Posts: 533


« Reply #2 on: August 21, 2017, 07:57:48 am »

An ES of over 100 tells you that you are already well outside the useful range of loading intensity for this powder. 
Logged
Tuolumne Lawman
CAS-L Ghost Rider
Top Active Citizen
*
Offline Offline

Posts: 1829


Grass Valley, CA in the Sierra Nevada Mountains


« Reply #3 on: August 21, 2017, 08:27:31 am »

Possibly.  But I have been shooting 7 grains and whacking 75 yard gongs at every match.   Hodgdon own Trail Boss web page has an alternative formula of filling the case to the base of the bullet (Maximum), weigh, back off 30% and work up from there.  7.0 grains isn't even close to filling the case....  In fact, I think 6.0 grains was 30% less than full.

I have zero signs of pressure issues.   Even with 45 Schofield 7 grains with a 200 grain bullet shoots very tight groups, though I load 6 grains for my pistols.
Logged

TUOLUMNE LAWMAN
CO. F, 12th Illinois Cavalry  SASS # 6127 Life * Spencer Shooting Society #43 * Motherlode Shootist Society #1 * River City Regulators
Abilene
Top Active Citizen
*
Offline Offline

Posts: 2296



WWW
« Reply #4 on: August 21, 2017, 08:39:16 am »

I wrote Hodgdon once asking about why their two methods listed of loading trailboss do not match eachother.  Did not get a response.
Logged

Tuolumne Lawman
CAS-L Ghost Rider
Top Active Citizen
*
Offline Offline

Posts: 1829


Grass Valley, CA in the Sierra Nevada Mountains


« Reply #5 on: August 21, 2017, 09:00:58 am »

Yep, I did the same.  Well I have used it, and only found that case full loads are less accurate.  7.0 works awesome from my rifles.
Logged

TUOLUMNE LAWMAN
CO. F, 12th Illinois Cavalry  SASS # 6127 Life * Spencer Shooting Society #43 * Motherlode Shootist Society #1 * River City Regulators
Pages: [1] Go Up Print 
Cas City Forum Hall & CAS-L  |  CAS TOPICS  |  The Powder Room - CAS reloading (Moderator: Professor Marvel)  |  Topic: Trail Boss .44-40 loads chronigraphed « previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.055 seconds with 21 queries.