1929 SC SBT Barrel Flat Codes Help Needed

[Jim Pasman]

Please see the pictures; I think I've deciphered two codes as 1. the struck barrel weight (3lb 2oz) and 2. March 1935 Service Section Remington Repair Code (AD 3).

However, on either side of the weight and proof marks are two other codes that look like HT/A A (on the left) and the numeral 4 (far right). Are these inspection stamps?

Like much in life, I don't have clue but will wager someone does....help?

Thanks in advance.

[Mark Riessen]

The large A by itself is the grade or type steel in the barrel. Acme. I believe. M

[Mark Riessen]

The number four would be the grade, C, I believe. M

[Dean Romig]

What is the “M” in your replies?





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[Dean Romig]

A D 3 is a Remington service ir repair code.





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[John Davis]

What is the “M” in your replies.

“Mark”

[Dean Romig]

Oh, his name… duh… sorry.





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[Jim Pasman]

Thank you, all, for your replies and help. The code that's most puzzling is the small strikes that look like HT over A to the left of the Acme steel A.

Maybe it's H7? Any guesses or ideas?

Thanks!

[Jim Pasman]

P.S. heading north to the woods for a few days - no internet or phone and will check updates to say thanks again by the end of the week....

[Dean Romig]

Thank you, all, for your replies and help. The code that's most puzzling is the small strikes that look like HT over A to the left of the Acme steel A.

Maybe it's H7? Any guesses or ideas?

Thanks!

The most accepted meaning of HT/A is High Tensile Alloy.





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[John Davis]

HTA is a common marking on Parkers. Not explicitly known but the consensus seems to be Heat Treated something or other that starts with an A. Edgar can chime in for a more detailed explanation on that one.

[John Davis]

The most accepted meaning of HT/A is High Tensile Alloy.

Or what Dean said.

[Dean Romig]

Or what Dean said.

And several years ago Dave Suponski suggested Heat Treated and Annealed…





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[Mike Franzen]

Hi Jim! Good seeing you on here.

[edgarspencer]

Heat Treated and Annealed. Annealing is a specific process, which follows Heat Treatment for mechanical properties. That term is no longer used in that context, replaced by 'Stress Relieved', though the term is still used signifying a 'draw' cycle, meaning to 'soften'.

[Jim Pasman]

Thank you all for your responses and insights! This is why this forum is so valuable - the expertise and opinions are as priceless as our Parkers - where would we be without them?

[Jim Pasman]

Hey, Mike - great to "see" you, too!