19 or 20 Ton proofed bolt head or Canadian equivalent for No4MkI 7.62 conversion?

cantom

cantom

CGN Ultra frequent flyer
Rating - 100%
554   0   0
Location
Conservative Canada
The Brits proofed their 7.62 conversion bolt heads to 19 or 20 Tons as I recall.

For Canadian Arsenals, when doing military 7.62 conversions or DCRA rifles, was there a different proofing standard for the bolt heads?

The few I've handled didn't appear any different than normal.

BTW, does anyone have a 19T or 20T proofed 0 bolt head they'd part with?

I have a 3 bolt head as trade goods or will buy.
 
Last edited:
cantom said:
The Brits proofed their 7.62 conversion bolt heads to 19 or 20 Tons as I recall.

For Canadian Arsenals, when doing military 7.62 conversions or DCRA rifles, was there a different proofing standard for the bolt heads?

The few I've handled didn't appear any different than normal.

BTW, does anyone have a 19T or 20T proofed 0 bolt head they'd part with?

I have a 3 bolt head as trade goods or will buy.
Click to expand...

All the (original) 7.62 DCRA conversion bolt and bolt heads which i have seen have hardness impression markings on them.

The rolled leaf Technical services marking is a proof mark of sorts, but i have never seen a reference to what the specific proof load may have been, other than it would have been the same as they used to proof fire 7.62 C1/C2 rifles and C1/C5 MGs.
 
My heavy barreled Long Branch [7.62] is stamped 20T on the barrel and 19T on the bolt head bolt seems to be normal other then the copper appearance the receiver has. Is that what it looks like when gone through a Harding process ?
 
Hi Cantom. Long Branch bolt heads were not marked and not proved for the 7.62 round. For 7.62 conversions all that was necessary was that a new bolt head be fitted. No way a proving process would be initiated for a simple small run of rifles almost all destined for commercial target use.In 1968 we were told that .303 ammo would no longer be available for ORA and DCRA matches so you could send your rifle in to the DCRA and they in turn sent it to Long Branch for rebarrelling and head space check. Cost was near $65. Some guys were able to get their rifles reworked with new woodwork (some with laminated stocks). Steel hardening process at Long Branch was consistent within the required limits. But if you sent a Savage, BSA, or Maltby rifle in you would get it back with a LB bolt head. JOHN
 
You must log in or register to reply here.
Back
Top Bottom