6.5 muzzle velocity

My 6.5 has a 24 " barrel. I first tried IMR 4895 with a suggested maximum load of 37.8 gr for a 140 gr bullet.

I tried 37.5 grain and chronographed 5 shots (Nosler Partition 140 gr) at an average MV of 2565 f/sec

I now use IMR 4350 with a suggested minimum of 41 gr and maximum of 45 gr for a 140 gr bullet.

Again I loaded Nosler Partitions 140 gr and with IMR 4350 I used 41.5 gr and chronographed 3 shots at an average MV of 2581 f/sec

With 44gr IMR 4350 and the same bullets, I chronographed 5 shots at an average MV of 2728 f/sec

I like mild loads, but I guess if i want to, I will be able to achieve close to 3000 f/sec
 
8mmpeter said:
Yeah, I was thinking 2300-2400 fps. If speer can get almost 2600 out of an 18" barrel, I think I might have to start reloading
Click to expand...

if it's a 96 mauser action DON'T lean on it if you take up reloading .
if you start to see signs of high pressure , you are way to hot for the old military action .

the saami max pressure for this cartridge is 46,000 cup , not all that high .
 
burnt_servo said:
if it's a 96 mauser action DON'T lean on it if you take up reloading .
if you start to see signs of high pressure , you are way to hot for the old military action .

the saami max pressure for this cartridge is 46,000 cup , not all that high .
Click to expand...

X2!

One doesn't need to hot load this cartridge anyway.
Also one risks not only injury but destroying a great rifle.
 
burnt_servo said:
if it's a 96 mauser action DON'T lean on it if you take up reloading .
if you start to see signs of high pressure , you are way to hot for the old military action .

the saami max pressure for this cartridge is 46,000 cup , not all that high .
Click to expand...

Sound advice, the manual maximums are meant for the M96 actions. If you have a modern action, then you can load to .260Rem pressures and get much better performance.


crazydave said:
I have a speer reloading manual from 1966 that has a max load for 140 grain spitzers at 2634 fps, 51 grains 4831.
Click to expand...

That would be an M96 based max load, the 6.5x55 will do at least 2800fps with 140gr. bullets running at more modern pressure levels.

Mark
 
Calum said:
If you mean an M38 or M96 then, then you might find this thread interesting.

http://forums.gunboards.com/showthread.php?129403-Bullet-yaw-tumbling-**-Best-Handloading-Thread-**

And note on post #54 on the site listed, Hodgdon reloading data may be too hot for the old small ring Mausers.
Click to expand...

read post 28 .....
in response to that post , you won't set the lugs back on a 96 mauser ,with semi hot loads . the steel is too hard .


what the guy in post 28 is experiencing is case thrust due to the fairly extreem taper in the cartridge case ( compared to many of today's new rounds ) .

but like i mentioned before , if a person is getting any signs of presure , you are more than likely over 46,000 cup .

i have no idea of how brittle swedish steel it , it seems very high quality , and it is very hard , but it is also around 100 years old +/- 20 or so years .
hard steel has a tendancy to stress fracture much easier than a softer steel.

but why push your luck , if a guy wants to experiment with overloading a cartridge , get something like a ruger #1 and a case with very little taper in the body ..... at least that way innocent bystanders won't get hurt as the trigger gets pulled on a bomb .
 
8mmpeter said:
The 6.5 mentioned in this thread is a 1942 husky.
Click to expand...

the thing to find out is if it's a '96 or '98 mauser variant

a '96 mauser just has the front 2 locking lugs .

a '98 mauser has 3 locking lugs , the 3rd lug is just ahead of the bolt handle 1/4 inch , and about 1/2 inch lower down on the bolt .




on a side note , i assumed the area of where the locking lugs locked into the barrel was bigger on a '98 mauser ......

my 6.5 x 55 '96 , measures 1.3 inches
my .270 husky '98 mauser measures 1.285 inches .... but it is a featherweight model.
 
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