Neck Clearance
- MISSED
- Moderator
- Posts: 8377
- Joined: Sat Dec 22, 2007 12:23 pm
- Favourite Cartridge: 20 PPC
- Location: YASS
Neck Clearance
Ok I purchased some Lapua 30/06 brass with the plan of resizing to 25/06.I did this with Winshitter nickel cases and ended up with 3 thou neck clearance (My rifles chamber is .290 neck) now with the Lapua brass after a light neck skim to flash up the necks I have 1.5 thou neck clearance on a loaded round.My question is is this enough or should I turn another thou.
-
- .270 Winchester
- Posts: 1293
- Joined: Fri Mar 20, 2009 4:01 pm
- Favourite Cartridge: 30/06
- Location: Sthn NSW
Re: Neck Clearance
Generally I look for 1 to 1.5thou PER SIDE.
Keep turning.
Keep turning.
- JasonF
- 7mm Rem Mag
- Posts: 1108
- Joined: Tue Feb 03, 2009 2:36 pm
- Favourite Cartridge: 7mm-08
- Location: Canberra region, NSW
Re: Neck Clearance
Hmmm. How does that old saying go? Oh that's right. I TOLD YOU SO! Back to neck turning duty for you my friend.
3 thou clearance (1.5 per side) seems to be the minimum acceptable in a field rifle. In my 7-08 (using 308 Lapua cases resized then neck turned to 312 for a 315 chamber) the brass bounces back enough that I can't easily slide a projectile into a fired case. I wouldn't be game to run less clearance.
3 thou clearance (1.5 per side) seems to be the minimum acceptable in a field rifle. In my 7-08 (using 308 Lapua cases resized then neck turned to 312 for a 315 chamber) the brass bounces back enough that I can't easily slide a projectile into a fired case. I wouldn't be game to run less clearance.
-
- .270 Winchester
- Posts: 1293
- Joined: Fri Mar 20, 2009 4:01 pm
- Favourite Cartridge: 30/06
- Location: Sthn NSW
Re: Neck Clearance
Yep, I'd strongly suggest you look for a minimum of 3 thou total clearance, and 4 thou won't really hurt that much.
- MISSED
- Moderator
- Posts: 8377
- Joined: Sat Dec 22, 2007 12:23 pm
- Favourite Cartridge: 20 PPC
- Location: YASS
Re: Neck Clearance
I hate smug people.JasonF wrote:Hmmm. How does that old saying go? Oh that's right. I TOLD YOU SO! Back to neck turning duty for you my friend.
Did I tell you about the 100 kg boar we saw yesterday afternoon. Well now I won`t
- JasonF
- 7mm Rem Mag
- Posts: 1108
- Joined: Tue Feb 03, 2009 2:36 pm
- Favourite Cartridge: 7mm-08
- Location: Canberra region, NSW
Re: Neck Clearance
So do I, just gave myself an uppercut for the cheap shot.MISSED wrote:I hate smug people.
And now, about that boar...
- MISSED
- Moderator
- Posts: 8377
- Joined: Sat Dec 22, 2007 12:23 pm
- Favourite Cartridge: 20 PPC
- Location: YASS
Re: Neck Clearance
He was standing on the side of the track eating blackberry and was completely nonplussed about the 3 tonne fourby in a 4 wheel lock up with 2 humans running for the back doors to get the packed up rifles and ammo out.Worse thing was we were in the cockies front paddockJasonF wrote:So do I, just gave myself an uppercut for the cheap shot.MISSED wrote:I hate smug people.
And now, about that boar...
- JasonF
- 7mm Rem Mag
- Posts: 1108
- Joined: Tue Feb 03, 2009 2:36 pm
- Favourite Cartridge: 7mm-08
- Location: Canberra region, NSW
Re: Neck Clearance
Oh well. At least you know he is there. Makes packing the 270 and 25-06 worthwhile.
- MISSED
- Moderator
- Posts: 8377
- Joined: Sat Dec 22, 2007 12:23 pm
- Favourite Cartridge: 20 PPC
- Location: YASS
Re: Neck Clearance
Yeah but I wanted to shoot him with the Brown HornetJasonF wrote:Oh well. At least you know he is there. Makes packing the 270 and 25-06 worthwhile.
- James270
- His Holiness
- Posts: 801
- Joined: Fri Dec 08, 2006 7:57 am
- Favourite Cartridge: 270W
- Location: Yass
Re: Neck Clearance
We might have got him if you didnt spend so long rummaging through your arsenal deciding if you wanted to blood the brown hornet or the PPCMISSED wrote:Yeah but I wanted to shoot him with the Brown HornetJasonF wrote:Oh well. At least you know he is there. Makes packing the 270 and 25-06 worthwhile.
- James270
- His Holiness
- Posts: 801
- Joined: Fri Dec 08, 2006 7:57 am
- Favourite Cartridge: 270W
- Location: Yass
Re: Neck Clearance
I am not up to speed on all this fancy neck turning caper, but after the wonderful practical lesson you gave me the other night I do know that a 25/06 case will not chanber in a 20PPCMISSED wrote:Ok I purchased some Lapua 30/06 brass with the plan of resizing to 25/06.I did this with Winshitter nickel cases and ended up with 3 thou neck clearance (My rifles chamber is .290 neck) now with the Lapua brass after a light neck skim to flash up the necks I have 1.5 thou neck clearance on a loaded round.My question is is this enough or should I turn another thou.
Re: Neck Clearance
Hi missed , I run the clearances pretty tight on my comp guns but this is in a very controlled enviroment and i re turn the necks every firing , not something you want for everyday .. How i know exactly what size things are is to turn the table on sizing ,i measure the ID of the neck upon firing .. Fire say 3 cases and measure accurately the inside of the neck just as they come from the chamber.. The minium spec you should look for is the same dia as the projectile you just fired, if it's say .3075 on a .308 bullet then turn the neck again .. If your looking for a case size that you do not have to check now and then (as they will grow) then the 1st set up size should be .3085 on a .308 bullet .. Clear as mud , sorry the only way i know how to explain it ..JR..Jeff Rogers
MISSED wrote:Ok I purchased some Lapua 30/06 brass with the plan of resizing to 25/06.I did this with Winshitter nickel cases and ended up with 3 thou neck clearance (My rifles chamber is .290 neck) now with the Lapua brass after a light neck skim to flash up the necks I have 1.5 thou neck clearance on a loaded round.My question is is this enough or should I turn another thou.
-
- .270 Winchester
- Posts: 1293
- Joined: Fri Mar 20, 2009 4:01 pm
- Favourite Cartridge: 30/06
- Location: Sthn NSW
Re: Neck Clearance
Okay, I'll bite.James270 wrote:I am not up to speed on all this fancy neck turning caper, but after the wonderful practical lesson you gave me the other night I do know that a 25/06 case will not chanber in a 20PPCMISSED wrote:Ok I purchased some Lapua 30/06 brass with the plan of resizing to 25/06.I did this with Winshitter nickel cases and ended up with 3 thou neck clearance (My rifles chamber is .290 neck) now with the Lapua brass after a light neck skim to flash up the necks I have 1.5 thou neck clearance on a loaded round.My question is is this enough or should I turn another thou.
- MISSED
- Moderator
- Posts: 8377
- Joined: Sat Dec 22, 2007 12:23 pm
- Favourite Cartridge: 20 PPC
- Location: YASS
Re: Neck Clearance
Thankyou aJR now that means more toys to buy
Nothing to read here just move along
adamjp wrote:Okay, I'll bite.James270 wrote:I am not up to speed on all this fancy neck turning caper, but after the wonderful practical lesson you gave me the other night I do know that a 25/06 case will not chanber in a 20PPCMISSED wrote:Ok I purchased some Lapua 30/06 brass with the plan of resizing to 25/06.I did this with Winshitter nickel cases and ended up with 3 thou neck clearance (My rifles chamber is .290 neck) now with the Lapua brass after a light neck skim to flash up the necks I have 1.5 thou neck clearance on a loaded round.My question is is this enough or should I turn another thou.
Nothing to read here just move along
-
- .270 Winchester
- Posts: 1293
- Joined: Fri Mar 20, 2009 4:01 pm
- Favourite Cartridge: 30/06
- Location: Sthn NSW
Re: Neck Clearance
That's not what you said earlier today.....I was being sensitive to my cold, otherwise I'd have been wheezing around on the floor from laughter.MISSED wrote:adamjp wrote:Okay, I'll bite.James270 wrote: I am not up to speed on all this fancy neck turning caper, but after the wonderful practical lesson you gave me the other night I do know that a 25/06 case will not chanber in a 20PPC
Nothing to read here just move along
All in all it sounded a bit like the Larry, Moe and Curly show, with the foxes being the ones who did the headslapping.