Neck sizing question

akinswi · November 26, 2014, 03:04 PM

I have a arisaka that has been re-chambered to shoot 30-06, i wanna hand load .311 bullets instead of .308. My question is when I neck size should i use my 30-06 collet die or my 7.7jap collet die on the fired formed 30-06 brass

condor bravo · November 26, 2014, 03:26 PM

Go ahead and use the .30-06 dies but you had better flare the case mouths (not just camphering) to keep from possibly crushing the necks. But the main question is--why are using .311s unless they are going to be cast lead?

T. O'Heir · November 26, 2014, 03:46 PM

It been re-chambered or rebarreled? Have you slugged the barrel?
The 7.7 wont do anything due to the 200ish thou case length difference. It might catch a wee bit of the neck though. The Jap case is 3 thou bigger at the head too. You may want to check that as well.
An '06 necking die will size for a .308" bullet with or without a flare.

akinswi · November 26, 2014, 05:01 PM

Because the its a 7.7 bore not a 30-06 bore, so a .308 diameter bullet is a little to small.

akinswi · November 26, 2014, 06:38 PM

I only found out it was chambered in 30-06 because i bought some 7.7x58 jap ammo for it, because the gun shop that sold it to me. Told me it was chambered in that cal. Well i shot about 4 rds and i had blow back and inspected the cases they look like 30-06 cases, i did some research and looks like there were some arisakas re-chambered in 30-06 but left the 7.7bore. i paid like 100 bucks for this rifle its light and rugged, it had a sporter stock on it and already drill/taped for scope, i just wanted it as a hog rifle to lug around the woods not worried about scratching etc etc.

akinswi · November 26, 2014, 06:40 PM

It shoots 30-06 ammo just fine just not really accurate due to the bullet diameter is little small for bore, hence the reason for my question

TimSr · November 27, 2014, 09:00 PM

I had a 7.7 Arisaka rechambered (not rebarreled) for 06 also. Mine shot .308 bullets very well in 150, 180, and 200gr bullets. It is my understanding that tolerances were not very tight, and barrel diameters were varied. Your might be a little bigger than mine if your rifling is in good condition.

Mine seemed to like the heavier loads better. I remember my brother getting a bear with a 200Gr Nosler Partition over 55gr IMR4350 and I took a deer with a 180gr Speer Mag Tip over 57gr of IMR4350.

Target loads were 147 FMJBT over 57 gr 4350, and they shot okay, not not nearly as tight as the others.

November 26, 2014, 03:04 PM	#1
akinswi Senior Member Join Date: October 14, 2012 Location: Bowling Green, Ky Posts: 706	Neck sizing question I have a arisaka that has been re-chambered to shoot 30-06, i wanna hand load .311 bullets instead of .308. My question is when I neck size should i use my 30-06 collet die or my 7.7jap collet die on the fired formed 30-06 brass

November 26, 2014, 03:46 PM	#3
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	It been re-chambered or rebarreled? Have you slugged the barrel? The 7.7 wont do anything due to the 200ish thou case length difference. It might catch a wee bit of the neck though. The Jap case is 3 thou bigger at the head too. You may want to check that as well. An '06 necking die will size for a .308" bullet with or without a flare. __________________ Spelling and grammar count!

November 26, 2014, 03:26 PM	#2
condor bravo Senior Member Join Date: August 23, 2014 Location: Nevada/Ariz/CA Posts: 1,753	Go ahead and use the .30-06 dies but you had better flare the case mouths (not just camphering) to keep from possibly crushing the necks. But the main question is--why are using .311s unless they are going to be cast lead?

November 26, 2014, 05:01 PM	#4
akinswi Senior Member Join Date: October 14, 2012 Location: Bowling Green, Ky Posts: 706	Because the its a 7.7 bore not a 30-06 bore, so a .308 diameter bullet is a little to small.

November 26, 2014, 06:38 PM	#5
akinswi Senior Member Join Date: October 14, 2012 Location: Bowling Green, Ky Posts: 706	I only found out it was chambered in 30-06 because i bought some 7.7x58 jap ammo for it, because the gun shop that sold it to me. Told me it was chambered in that cal. Well i shot about 4 rds and i had blow back and inspected the cases they look like 30-06 cases, i did some research and looks like there were some arisakas re-chambered in 30-06 but left the 7.7bore. i paid like 100 bucks for this rifle its light and rugged, it had a sporter stock on it and already drill/taped for scope, i just wanted it as a hog rifle to lug around the woods not worried about scratching etc etc.

November 26, 2014, 06:40 PM	#6
akinswi Senior Member Join Date: October 14, 2012 Location: Bowling Green, Ky Posts: 706	It shoots 30-06 ammo just fine just not really accurate due to the bullet diameter is little small for bore, hence the reason for my question

November 27, 2014, 09:00 PM	#7
TimSr Senior Member Join Date: March 8, 2013 Location: Rittman, Ohio Posts: 2,074	I had a 7.7 Arisaka rechambered (not rebarreled) for 06 also. Mine shot .308 bullets very well in 150, 180, and 200gr bullets. It is my understanding that tolerances were not very tight, and barrel diameters were varied. Your might be a little bigger than mine if your rifling is in good condition. Mine seemed to like the heavier loads better. I remember my brother getting a bear with a 200Gr Nosler Partition over 55gr IMR4350 and I took a deer with a 180gr Speer Mag Tip over 57gr of IMR4350. Target loads were 147 FMJBT over 57 gr 4350, and they shot okay, not not nearly as tight as the others.