The Handloaders Bench Home
Home Search search Menu menu Not logged in - Login | Register

Attention: Due to an increase in spammers all new members will be activated manually by an administrator, and start out as probationary members. You will only be able to start a welcome post in the welcome new members forum. You can reply to all other posts. Once you have reached 5 posts you will be a full member and can start topics. We apologize for the inconvenience but spammers are becoming a real problem. We are also experiencing problems with new members receiving activation emails. We are manually activating new members. Please be patient with us. We will activate your membership within 24 hours of registration. We are sorry for any inconvenience this might cause. HB Admin

overall length ?
 Moderated by: Slingshot, Rockydog, klallen, DesertMarine, -6
 New Topic   Reply   Printer Friendly 
 Rate Topic 
AuthorPost
 Posted: Mon Sep 21st, 2009 03:20 PM
   PM  Quote  Reply 
1st Post
hunts4food
Junior Member
 

Joined: Thu Sep 3rd, 2009
Location:  
Posts: 17
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: rifle
My favorite chambering is:: 30-06, 7mm08
Status: 
Offline

  back to top

OK guys I have yet another newbie question. Loading is for 30-06. 150 gn Hornady BTSP. From reading here I have learned to start a bullet into an empty case and chamber it in the rifle to determine OAL. My Winchester 70 came out 3.224, My Ruger M77 MKII came out 3.233, my Remington 700 came out 3.337. My Lee manual calls for 3.3-3.4, the few I loaded before checking are 3.252. These loads chamber fine even in the Winchester that checked 3.224 but there does seem to be some really light marks where I assume the bullet is touching the lands. Question is what length should I use in each rifle? Is there a better way to check for OAL? I would like to use one length for the M70 and M77 if possible. The M700 I know is a good bit longer so I will load for it seperate. I haven't got to test fire any rounds yet since it is raining to the point of flooding in my area and has been for several days. Thanks in advance for the help.



 Posted: Mon Sep 21st, 2009 03:37 PM
   PM  Quote  Reply 
2nd Post
Busted
Full Member
 

Joined: Sun Sep 13th, 2009
Location:  
Posts: 153
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: I load everything!
My favorite chambering is:: 30-06
Status: 
Offline

  back to top

"Question is what length should I use in each rifle?"

You may use a book OAL or find the lands and seat into them or, better, experiment with seating. No way any of us can tell you what depth/OAL your rifles will prefer.


"Is there a better way to check for OAL?"

Assume you mean to find the MAX OAL (That's alot different from the "best" OAL!)? Your current method is as good as any.


"I would like to use one length for the M70 and M77 if possible."

It's possible. Find which is the shortest and load all your ammo to that length.



 Posted: Mon Sep 21st, 2009 04:19 PM
   PM  Quote  Reply 
3rd Post
hunts4food
Junior Member
 

Joined: Thu Sep 3rd, 2009
Location:  
Posts: 17
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: rifle
My favorite chambering is:: 30-06, 7mm08
Status: 
Offline

  back to top

Thanks for the help Busted.



 Posted: Mon Sep 21st, 2009 09:48 PM
   PM  Quote  Reply 
4th Post
Don Fischer
Full Member


Joined: Thu Aug 27th, 2009
Location: Antelope, Ore
Posts: 680
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: rifle
My favorite chambering is:: Could be one of several. Love the 6.5x55, 6.5-06 7xs57 ...
Status: 
Offline

  back to top

They should just leave the OLL data out of the book's. What work's in one rifle doesn't necessarily work in another. What you really need to do is measure your own chamber. Now measuring to the point of the bullet will get you close but it's not consistent. To be right you need to measure to the bullet ogive which means you need one of those deals from Sinclair that clamps onto your calipers. That is really nice for target work but most of us only want good hunting or varmit loads. For that you really don't need it.

I've never owned one of those things, but have considered it. I've tried about every method around to figure out that dimention and have had very poor luck with most. Either I'd stick the bullet in the lands and pull it or I'd run the case in and the damn bullet would fall out removing the case. What I do now is to remove the bolt and drop a bullet into the chamber. Then with a new pencil, hold the bullet in the lands while inserting a cleaning rod in the barrel. There's a flat tip on the jag so that the tip of the bullet will stop it. When it stop's, mark the cleaning rod right at the barrel. Then remove the bullet and put the bolt back in and close the action. Run the cleaning rod in again and this time the bolt face will stop it. Again mark the cleaning rod. Now take your caliper's and measure the distence between the mark's. That's gonna be awful close to OLL for YOUR rifle. But the bullet's some times vary just a bit in length, very little. So load up a round like that and try it in your rifle. Should work and just touch the lands. After you've loaded up a box, run all of them thru the chamber. Find even one that sticks a bit to the lands, screw in the seater plug just a bit and re-seat that bullet till the action closes easily. Once it does, re-seat every other bullet in the box. Keep that OLL and use it with that bullet in that rifle every time, if it shoots well. Or experiment with seating depth but keep it wrote down where the best accuray occured and use that every time after that.

Keep in mind that ALL the data in a reloading manual is really only about the rifle that the loads were tested in on the day they were tested. Your max loads may vary, either higher or lower. And so may your OLL.

Last edited on Mon Sep 21st, 2009 09:54 PM by Don Fischer



____________________
I pity the man that has never been loved by a dog!


 Posted: Mon Sep 21st, 2009 10:01 PM
   PM  Quote  Reply 
5th Post
3006 user
Forum Benefactor


Joined: Mon Jul 30th, 2007
Location: Denver Area, Colorado USA
Posts: 2216
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: I load everything!
My favorite chambering is:: 30-06
Status: 
Offline

  back to top

Don, that makes more sense than some of the convoluted directions I've  read!!! Besides that, it's a lot cheaper...

I'll try your method...:thumbs:



____________________
Molon Labe
Benefactor member NRA
USN 1956-1961


 Posted: Tue Sep 22nd, 2009 01:44 AM
   PM  Quote  Reply 
6th Post
Busted
Full Member
 

Joined: Sun Sep 13th, 2009
Location:  
Posts: 153
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: I load everything!
My favorite chambering is:: 30-06
Status: 
Offline

  back to top

I own or have tried all the methods and tools available for finding the MAX OAL to the lands. Have reverted back to the old "rod" method described by Mr. Fisher. Except I use a wood dowel rod instead of a cleaning rod and make small knife marks exactly across the muzzle. It's as accurate as any other, better than some, quick, easy, inexpensive.

It need NOT be accurate to a half gnats azz anyway. I find my best seating to run from .030" to as much as .200" off the lands. So, all I need is a close approximation that I can then use with my other tools to read off the ogive at the seated length I wish to use. Precison duplication of the optimum depth found by experimentation on targets is the key to seating correctly.



 Current time is 09:04 AM
Top




UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.5977 seconds (78% database + 22% PHP). 26 queries executed.