Bolt face measurements - need some help please.

[Davy]

Hopefully this picture will load. It is a very poor cross section of the side elevation of a rifle bolt and the bolt face. (A front locker two lug if you look carefully ) It does not have an ejector or firing pin but hopefully you get the idea.

 

I need some dimensions from a few bolt faces for an idea I am working on and would like to know:

 

Rifle make/model

Cartridge

Dimensions A, B & C

 

So if you still have the rifle out from cleaning after today's shooting, or are bored with TV and have a couple of minutes and a vernier I would be very grateful. I am only interested in rimless cartridges and if more than one person can measure the same model rifle even better.

 

 

Many thanks in advance.

 

[1967spud]

neil over too you for these measurements please as its some thing davey is working on that im partly helping with

 

 

 

all i know is

 

a .0005

b.308 bolt face

c not known

[rabbit fingers]

Measured as best I can.

lawton 7000

6.5x47

A 0.140"

B 0.475"

C 0.697"

[Gunsgobang88]

Hopefully this picture will load. It is a very poor cross section of the side elevation of a rifle bolt and the bolt face. (A front locker two lug if you look carefully ) It does not have an ejector or firing pin but hopefully you get the idea.

 

I need some dimensions from a few bolt faces for an idea I am working on and would like to know:

 

Rifle make/model

Cartridge

Dimensions A, B & C

 

So if you still have the rifle out from cleaning after today's shooting, or are bored with TV and have a couple of minutes and a vernier I would be very grateful. I am only interested in rimless cartridges and if more than one person can measure the same model rifle even better.

 

 

Many thanks in advance.

 

 

Hi Davy,

 

At any one time I have 90 - 100 rifles in the workshop or armoury. If you can give me a hint as to what your objective is I can measure some up, I can't measure every rifle! If it's any use I have many dimensioned design projects, 3-D computer models and machined parts (subject to NDA procedures),

 

Best regards

 

Alan

[Ratwhiskers]

Remington 700 PSS .308win

 

A.0.150"

B.0.530"

C.0.7055"

 

Good luck.

[Davy]

Thanks all for the numbers so far.

 

Alan, thank you also for your offer, I will get back to you on that.

[Gunsgobang88]

Hi Davy,

 

Please find below an assortment of bolt measurements:-

 

Shultz & Larsen M54 6.5x55 Schultz & Larsen M65 7x61 S&H Super

A. .058" A. .116

B. .492 B. .544

C. .750 C. .745

 

Rem. 700 5R Milspec .308 Win. Rem. Model 7 .243 Win.

A. .155 A. .150

B. .488 B. .488

C. .695 C. .694

 

Ross M-10 Sporter .303 Brit. CZ 550 Magnum .416 Rigby

A. .058 A. Stepped, .108/.074

B. .558 B. .606

C. .689 C. .697

 

Stiller Extreme .338 Lapua Mag. Stiller Predator 6.5/284

A. .152 A. .140

B. .602 B. .482

C. .745 C. .695

 

Erma SR100 .338 Lapua Mag. Rem. 700 PTG Bolt .30BR

A. .113 A. .140

B. .594 B. .484

C. .686 C. .699

 

BAT VR .20 Tac BAT VR 6x47

A. .132 A. .132

B. .385 B. .488

C. .715 C. .715

 

Hope all this is of some assistance,

 

Alan

[Davy]

Many thanks Alan, that is enough to keep me going for a while