Question for the Crowd: 7.5x54 MAS

[challenger_i]

Before I shell out a Princely Sum for the entire manual, by chance does anyone have a copy of Hornady's 9th Edition?
Might I trouble someone to send a copy of the section covering 7.5x54 MAS?

Thanks!

[WinchesterM1]

let me go check my books and ill take some pics ad post them here for you

[challenger_i]

Thank you sir!

[Abert Rim]

For your 49/56? Love that rifle. :drinks:

[Tatume]

I'll do it. Send me your email address and I'll send you a PDF.

Tom

[challenger_i]

I would like to extend my sincere appreciation and gratitude to one and all for your assistance in my Quest for Knowlege!
You have been a great help!

[barnabus]

Before I shell out a Princely Sum for the entire manual, by chance does anyone have a copy of Hornady's 9th Edition?
Might I trouble someone to send a copy of the section covering 7.5x54 MAS?

Thanks!

is this the french bolt action MAS you asking about?

[challenger_i]

49/56. Semi-auto. Shares the same cartridge with the MAS 36 bolt-action.

[mace2364]

I can tell you that Hornady recommends only using cci #34 primers seated a certain distance below flush when loading for the 49/56(sorry I can’t remember if it was .002 or .005 or what) This is due to the risk of slam fires with this model, as the 49/56 is rather prone to them if precautions aren’t taken.

[Tatume]

At 13:30 Ian discusses slam fires and two cures for this problem.

https://www.youtube.com/watch?v=h0zqyAzsW1Y

[WILCO]

At 13:30 Ian discusses slam fires and two cures for this problem.

https://www.youtube.com/watch?v=h0zqyAzsW1Y

I wrote off this channel after the satanist friendship fiasco.

[Kosh75287]

ACTUAL data for the 7.5x54 mm cartridge is always preferable, but I wonder if starting data for the .308 Winchester wouldn't also work. I guess questions like that are why QuikLoad was invented. <shrug>

[TurnipEaterDown]

Hornady books (older prints) have data, and I sent it several days ago. So, the poster will have "real" data.

[Dutchman]

I did some brief load development for the French 49/56.

Primed brass was Swedish 6.5x55 m/12 (and m/14) gallery practice cartridges. Powder was dumped and case was run into Lee 7.5x54 expander to open up the case neck. Then a .308" caliber bullet was seated. Powder type and level can be extrapolated via similar cartridges: .303 Brit, 7.65x54 Argentine, 7.7x58 Arisaka. Start out low and creep up until reliable function is achieved.

Dutch

[Abert Rim]

Dutch, you joggled one of my fossilized brain cells loose there. I had forgotten the 7.5 French case head is .480, not .473. I was thinking I had used 6.5 Swede brass to make cases 30-ish years ago when loading for a 49/56.

[challenger_i]

Well, using load data from a "comparable" cartridge sort of works (Lee's data for the 7.5 MAS was directly copied from 30-40 Krag, and is anemic at best), and I initially used data for the 7.65x53, several years back, as a starting point down the 7.5 MAS rabbit hole (with decent results), in my quest for a decent load for 135gr FTX pills, and with the current scarcity of primers and powder, I desired to have better data to work with to keep the process as short as possible. With the information provided by some very generous folks (you know who you are, and you have my most sincere thanks!) I was able to get the task completed in very short order, and with minimal materials usage.
I now have a tack-driving hog killer round. :)

[Tatume]

I'm glad the data worked for you. Hornady data are usually pretty reliable.