Too Much or Not Enough Powder? - Page 2
You are Unregistered, please register to use all of the features of FirearmsTalk.com!    


Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Ammunition & Reloading >

Too Much or Not Enough Powder?


Reply
 
LinkBack Thread Tools Display Modes
Old 08-26-2011, 01:08 AM   #11
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: huntingtown,maryland
Posts: 257
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by JonM View Post
Seating bullets too deep can cause it too.

but thats only if its below miniumum oal right?


moneymaker17 is offline  
 
Reply With Quote
Old 08-26-2011, 01:39 PM   #12
Feedback Score: 0 reviews
 
jpattersonnh's Avatar
 
Join Date: Apr 2007
Location: South central,NH
Posts: 5,197
Liked 776 Times on 542 Posts
Likes Given: 842

Default

The easiest way to determine OAL in a specific rifle is:
Take an empty case, not resized, but trimmed to correct length.
Slightly sqeeze the neck so it will hold the bullet.
Put the bullet in the case, just barely.
Very carefully chamber the dummy round.
Carefully extract the round and mark the bullet at the case. Measure the OAL of the dummy cartridge and seat a real bullet .05 deeper when loading cases. Keep the dummy cartridge for the future and write all of your info in a book.


__________________
Freedom is not free. The best of us always leave too soon.
jpattersonnh is offline  
 
Reply With Quote
Old 08-26-2011, 04:25 PM   #13
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 19,235
Liked 6787 Times on 3608 Posts
Likes Given: 506

Default

Quote:
Originally Posted by moneymaker17 View Post
but thats only if its below miniumum oal right?
Minimum oal is the point at which your gun blows up....

Seriously though...

Seating bullets below the depth at which the load data was created starts increasing the pressure in a sharp nonlinear curve. Its ok to go longer so long as the bullet isnt touching the lands when chambered.
__________________
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

"I crapped my pants to avoid the draft!!" -Ted Nugent
JonM is online now  
 
Reply With Quote
Old 08-26-2011, 10:17 PM   #14
Feedback Score: 0 reviews
 
Join Date: Sep 2010
Location: huntingtown,maryland
Posts: 257
Liked 1 Times on 1 Posts

Default

Quote:
Originally Posted by JonM View Post
Minimum oal is the point at which your gun blows up....

Seriously though...

Seating bullets below the depth at which the load data was created starts increasing the pressure in a sharp nonlinear curve. Its ok to go longer so long as the bullet isnt touching the lands when chambered.
so if im in the middle of minimum OAL ,, and Max OAL
i will be good.
i dont seat the bullets anywhere near the min oal
for instance

min OAL= 2.165
Max OAL = 2.260


and the lowest case lenth i made is around =2.212
then i should be fine.

because please correct me if i am wrong but.
i have a case trimmer
(the kind for the drill then you have the bar(made for you specfic lenth) then you have a case trimmer ball...
if i put it in that "jig" it still isnt long enough to trim it, so im i believe i dont have to trim correct?????
moneymaker17 is offline  
 
Reply With Quote
Old 08-26-2011, 10:52 PM   #15
Feedback Score: 0 reviews
 
jpattersonnh's Avatar
 
Join Date: Apr 2007
Location: South central,NH
Posts: 5,197
Liked 776 Times on 542 Posts
Likes Given: 842

Default

You only trim if the case is too long. Try my method, you will have more accurate ammo.
__________________
Freedom is not free. The best of us always leave too soon.
jpattersonnh is offline  
 
Reply With Quote
Old 09-03-2011, 03:50 AM   #16
Feedback Score: 0 reviews
 
Join Date: Sep 2011
Posts: 13
Default

I hope you are using Norma cases. 7.7 bases are about.480 so 30/06 cases at .473 wil bulge excessively if used to make 7.7 brass. Norma cases are larger and correct at the base. I tried to make 7.7s from "standard" brass 45 years ago and found then suitable for one shot with reduced cast bullet loads.
lief69 is offline  
 
Reply With Quote
Old 09-03-2011, 04:19 PM   #17
Feedback Score: 0 reviews
 
Trez's Avatar
 
Join Date: Jan 2011
Location: 3-P
Posts: 3,889
Liked 927 Times on 590 Posts
Likes Given: 1036

Default

I have some Norma 7.7 cases and they only measure out to .473? My reformed .30-06 measures out to .470... Shooting the Norma factory ammo was worse than my reloads.... My Arisaka seems to like the thicker military reformed .30-06 than the factory Norma 7.7 brass...


__________________
Quote:
...... I suffer from a very rare genetic defect that causes me to be sympathetic toward the International cause. There is no cure.
Trez is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Powder help! roosterjuicer Ammunition & Reloading 9 04-18-2011 04:51 PM
Powder rec. for 22-250 nate Ammunition & Reloading 7 01-08-2011 02:26 PM
Powder jeepcreep927 Ammunition & Reloading 1 05-20-2009 03:38 PM
new powder iceboxx1953 Ammunition & Reloading 3 01-03-2009 06:23 PM
New powder poncaguy Blackpowder & Musket 0 06-14-2008 12:23 AM



Newest Threads