where to get .303 British Headspace gauge?
- Thread starter Raider556
- Start date
- Location
- WMU248 near Edmonton
or if you have a metal lathe and a good set of tools you can make one
No go .074" rim thickness
No go .074" rim thickness
When I make rimmed gauges, I keep the rimmed portion of the gauge larger in diameter than the finished size while facing it to the desired thickness. Makes it easier to measure the thickness with a micrometer. Once the dimension was correct, I then turn down the diameter.
I have seen drawings of a .303 gauge with a centre post that can slide into the gauge body. Rim thickness is .064" GO. The amount that the post projects above the gauge head is the amount of headspace in excess of minimum, and is measured with a depth micrometer. So, the actual total headspace can be measured, rather than just an accept/reject gauge situation.
I have seen drawings of a .303 gauge with a centre post that can slide into the gauge body. Rim thickness is .064" GO. The amount that the post projects above the gauge head is the amount of headspace in excess of minimum, and is measured with a depth micrometer. So, the actual total headspace can be measured, rather than just an accept/reject gauge situation.
- Location
- WMU248 near Edmonton
tiriaq said:
interesting.
I made a set of .064" .068" and .074"
I only use the .074", if the bolt won't close on it good. It's not really a surprise to find enfields that will swallow the .074"
"...not really a surprise to find enfields that will swallow the .074"..." Especially as thousands have been assembled out of parts bins with no QC and that nobody has any idea if some bonehead has changed the bolthead for who knows why in the past 60 plus years.
Brownell's sells headspace guages. About $25US each. A No-Go and a Field will do.
Brownell's sells headspace guages. About $25US each. A No-Go and a Field will do.
- Location
- Tucson, Arizona
Except that the gages you get from Brownells are made to SAMMI specs, not British specs.
tiriaq said:
Or you could threat the centre post with 40 tpi, put index marks on the post and body and turn the post out from the muzzle. You would need a screwdriver slot on the barrel end of the gauge and a long screw driver to turn out the post.
One complete turn out would be .025"
- Location
- WMU248 near Edmonton
well perhaps I should get set up to make up a batch
I had the Bn QM order up a set of military .303 gauges for the weapons techs so I might borrow them to copy for lenght and taper etc...
If I run a batch off I'll let everyone here know.
I had the Bn QM order up a set of military .303 gauges for the weapons techs so I might borrow them to copy for lenght and taper etc...
If I run a batch off I'll let everyone here know.
Dibbs on a set, if you do.
Pencil my name on your sales list, if you do. I loaned my set to a friend three years ago, he tells me that he is still using them! But that's ok, I'm still using his loading press. One day we will switch, maybe.
Handy things to have if you are an impulse buyer like me who buys on first impressions of how a rifle looks (gotta have it, gotta have it!). Checking with guages has stopped me in my tracks a few times. Bore guage for the muzzle end is handy to have too.
woodchopper said:
Pencil my name on your sales list, if you do. I loaned my set to a friend three years ago, he tells me that he is still using them! But that's ok, I'm still using his loading press. One day we will switch, maybe.
Handy things to have if you are an impulse buyer like me who buys on first impressions of how a rifle looks (gotta have it, gotta have it!). Checking with guages has stopped me in my tracks a few times. Bore guage for the muzzle end is handy to have too.
- Location
- WMU248 near Edmonton
goodness I don't know 
Ive got a new to me FN Hi-Power comming, and I think I finally have a load worked up for my 308 HB Win Md 70, but hunting season is comming and I have yet to work up a load for my new Savage 111 300WM, I've just started the barrel break in process (with factroy ammo) and I have 20 fireformed cases to start with now. I'm off to Scotland the first half of October, and I have about 20 trees to fell at the camp over the next 2 weekends and a gun auction to go to on Sunday. Then its hunting season, and I have to replace the tub and shower in my upstairs bathroom before the tiles all fall out.
Might be after Christmas before I can even get started.
oh I forgot I have a full time job too
Ive got a new to me FN Hi-Power comming, and I think I finally have a load worked up for my 308 HB Win Md 70, but hunting season is comming and I have yet to work up a load for my new Savage 111 300WM, I've just started the barrel break in process (with factroy ammo) and I have 20 fireformed cases to start with now. I'm off to Scotland the first half of October, and I have about 20 trees to fell at the camp over the next 2 weekends and a gun auction to go to on Sunday. Then its hunting season, and I have to replace the tub and shower in my upstairs bathroom before the tiles all fall out.
Might be after Christmas before I can even get started.
oh I forgot I have a full time job too
Max rim thickness on ammunition was .063" and most Defence Industries was right on this mark. I have seen commercial .303 ammo with rims so thin that you were looking at almost .020" headspace every time you loaded your rifle!
Minimum headspace as per factory specs was .064", max was .074" and the "field" gauge as used by Cdn forces and by the armourers at the DCRA match in Ottawa was a .070".
Minimum headspace as per factory specs was .064", max was .074" and the "field" gauge as used by Cdn forces and by the armourers at the DCRA match in Ottawa was a .070".
- Location
- WMU248 near Edmonton
smellie said:
this is why I prefer to reload milspec brass (I have about 400 IVI cases )
- Location
- WMU248 near Edmonton
Calum said:Want some more?
I don't mess with Berdan primers.
mine are all boxer, head stamps indicate production in 92 or 94 so its nice recent productin milspec brass
