AMT Guns forum

Forum Home Forum Home > Auto Mag Pistol > Message Board
  New Posts New Posts RSS Feed - Fast Powders and AutoMags
  FAQ FAQ  Forum Search   Register Register  Login Login

Fast Powders and AutoMags

 Post Reply Post Reply Page  <1234 5>
Author
Message
desertmoon View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 25 Mar 2016
Location: Arizona
Status: Offline
Points: 232
Post Options Post Options   Thanks (0) Thanks(0)   Quote desertmoon Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2017 at 3:44am
Lot's of great info!!!  Thanks, Gang!!!

By the way, one of my thought experiments was the running of lead bullets at lower velocities to keep from "smearing" lead down the barrel.

It was just a thought....but it was intended as increasing the flexibility of the gun...but I don't know that you could run lead slow enough and still cycle the action fast enough to get the right blend of projectile performance AND reliability.
Back to Top
Rocketthon View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 13 Apr 2013
Location: Texas
Status: Offline
Points: 92
Post Options Post Options   Thanks (0) Thanks(0)   Quote Rocketthon Quote  Post ReplyReply Direct Link To This Post Posted: 12 Nov 2017 at 1:18pm
Originally posted by desertmoon desertmoon wrote:

Lot's of great info!!!  Thanks, Gang!!!

By the way, one of my thought experiments was the running of lead bullets at lower velocities to keep from "smearing" lead down the barrel.

It was just a thought....but it was intended as increasing the flexibility of the gun...but I don't know that you could run lead slow enough and still cycle the action fast enough to get the right blend of projectile performance AND reliability.

You can get hardened lead bullets or gas checked lead bullets that will not lead foul the barrel at surprisingly high velocities, I use 335 GR gas checked hardened lead bullets for my 460 S&W with 38 GR of 296 under them and no appreciable leading in the barrel.

Leads to ask the question, which is easier to clean out copper fouling or lead fouling?  Both get scrubbed, and both have special cleaners available.  BTW Sweets can be rough on a barrel if not used correctly.
When you are up to your neck in alligators it is hard to remember your original intention was to drain the swamp
Back to Top
desertmoon View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 25 Mar 2016
Location: Arizona
Status: Offline
Points: 232
Post Options Post Options   Thanks (0) Thanks(0)   Quote desertmoon Quote  Post ReplyReply Direct Link To This Post Posted: 19 Nov 2017 at 2:33am
I find copper easier, generally.  God, when you get a sheet of lead in a barrel....PHEW!!!

I wish mercury was a bit safer to use ( i.e. keep around the house ) ....I'd just plug the bore and let the lead amalgamate.
Back to Top
Travis Morgan View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 13 Dec 2012
Location: Canada
Status: Offline
Points: 131
Post Options Post Options   Thanks (0) Thanks(0)   Quote Travis Morgan Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2017 at 5:28pm
Originally posted by desertmoon desertmoon wrote:


I wish mercury was a bit safer to use ( i.e. keep around the house ) ....I'd just plug the bore and let the lead amalgamate.

Speaking of amalgams; I've had so many dental fillings - (since they used me as a guinea pig to experiment on through a government 'free healthcare' program right from kindergarten up to about grade nine) ... I'm sure that the government will probably have to declare me a 'super fund site' when I die and get buried! 

All that mercury hasn't had any affect on me over all these years (twitch, twitch)!


Back to Top
desertmoon View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 25 Mar 2016
Location: Arizona
Status: Offline
Points: 232
Post Options Post Options   Thanks (0) Thanks(0)   Quote desertmoon Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2017 at 5:40pm
Originally posted by Travis Morgan Travis Morgan wrote:


All that mercury hasn't had any affect on me over all these years (twitch, twitch)!




Yeah, me neither.  I'm derrrrrrrrrrrrrr just fine.  Derrrrrrrrr......Dead
Back to Top
AndyC View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 04 Jul 2015
Location: Dallas, TX
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyC Quote  Post ReplyReply Direct Link To This Post Posted: 29 Dec 2017 at 12:47am
Originally posted by Rocketthon Rocketthon wrote:

You can get hardened lead bullets or gas checked lead bullets that will not lead foul the barrel at surprisingly high velocities

What style lead bullet (or mold) would be typical or even best for the .44 AMP? I'm an experienced caster, so I'm curious
Back to Top
Rocketthon View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 13 Apr 2013
Location: Texas
Status: Offline
Points: 92
Post Options Post Options   Thanks (0) Thanks(0)   Quote Rocketthon Quote  Post ReplyReply Direct Link To This Post Posted: 30 Dec 2017 at 12:50pm
Back in the day we had some success with the Speer 225 GR half jacket semi-wadcutter.  That bullet is no longer available but it was a bit different from the Keith type in that it had a slightly smaller and more tapered nose.  We used some button type castings in 45's and they fed and functioned well, i guess that would also work for AM's.  If you find a truncated cone with a smaller nose and more taper than the usual it should work.  Avoid sharp shoulders and straight lines on exposed lead and you should get something to work.  As always your gun(s) will exhibit their own personality, what will work for one likely will not work well on another.

On gas checks and hardening.  Be careful with gas checks, if you don't have a locking lip like Hornady's you risk leaving the gascheck in the barrel in rare occasions, hard on the gun with the next round fired.  Hardening of bullets can be in two ways, metallurgy or heat treating, either works so experimenting will help you in the long run.  I have found that 5% linotype is pretty good for velocities in an Automag but if you do a lighter bullet faster then 10% is good.  Made a canvas chute into a five gallon bucket of water to drop the bullets out of the mold into, this did a pretty good job of hardening but you have to let the bullets get pretty well solidified in the mold before you knock them out or they will egg.  Have also heard putting them in the oven at a moderate heat, 300-400 degrees and then a water bath does the job.
When you are up to your neck in alligators it is hard to remember your original intention was to drain the swamp
Back to Top
AndyC View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 04 Jul 2015
Location: Dallas, TX
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyC Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2018 at 4:09pm
I've hardened bullets both ways, so I'm familiar with that - cool. Great info on the gas-checks; I wouldn't have been aware of that issue. Avoid straight lines and sharp shoulders - got it.

Thank you for the advice :)
Back to Top
AndyC View Drop Down
International Auto Mag
International Auto Mag
Avatar

Joined: 04 Jul 2015
Location: Dallas, TX
Status: Offline
Points: 78
Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyC Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 2018 at 5:11pm
I can't find any round-nose .44-mag bullet-molds to my satisfaction, so I'm looking at the RCBS 240gr gas-checked SWC mold:



The ogive seems rounded enough to feed decently (one hopes), so I may get one just to try it and seat it like a .45acp SWC.
Back to Top
Pasadena-Joe View Drop Down
International Auto Mag
International Auto Mag


Joined: 08 Jul 2016
Location: Interwebs
Status: Offline
Points: 127
Post Options Post Options   Thanks (0) Thanks(0)   Quote Pasadena-Joe Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 2018 at 8:14pm
If you want lead to work reliably in a AutoMag, you better be shooting real heavy bullets and/or doing a lot of testing of powders to make sure you got the right combo.  WW296 is not good for slow and heavy lead, and fast lead will make a mess of your gun even the hard cast stuff. 

Dont believe me, then go ahead and try and you will suffer it for yourself.  -Joe
Back to Top
 Post Reply Post Reply Page  <1234 5>
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.082 seconds.

 - amtguns.info All rights reserved