Savage 6.5 CRD and PRC

[KenC]

I am reloading 6.5 Creedmoor and wondering if my Savage 110 Tactical 6.5 CRD (62,000 SAAMI) has the same chamber wall thickness and receiver strength as the PRC (65,000 SAAMI)?

In the alternative can anyone advise the highest load of Hybrid 100V they put behind a 140 gn BTHP match bullet in 6.5 CRD (without damage)?

Ken C

 

[AJC1]

I am reloading 6.5 Creedmoor and wondering if my Savage 110 Tactical 6.5 CRD (62,000 SAAMI) has the same chamber wall thickness and receiver strength as the PRC (65,000 SAAMI)?

In the alternative can anyone advise the highest load of Hybrid 100V they put behind a 140 gn BTHP match bullet in 6.5 CRD (without damage)?

Ken C

No one will give you that kind of answer. Even giving you a book max is dangerous and needs to be worked up.

 

[horsemen61]

No one will give you that kind of answer. Even giving you a book max is dangerous and needs to be worked up.

^^this

 

[KenC]

No one will give you that kind of answer. Even giving you a book max is dangerous and needs to be worked up.

After posting here I found a 6.5 Creedmoor forum with a substantial amount of reloading info for 100V and for a few bullets around 140 grain. Only one person had a pressure issue (firing pin made a hole in the primer) at 41.5 grains, and others reported no problems up to 42.8 grains. See:
https://www.65creedmoor.com/index.php?topic=5075.msg51806#msg51806

I don't understand the primer issue because the same primers are recommended for the higher pressures of 6.5 PRC. Maybe he was using magnum primers or mil spec.

As regards the guns, I believe you are correct. Apart from the engineers/designers at Savage - who won't tell - no one will know.

 

[gotboostvr]

After posting here I found a 6.5 Creedmoor forum with a substantial amount of reloading info for 100V and for a few bullets around 140 grain. Only one person had a pressure issue (firing pin made a hole in the primer) at 41.5 grains, and others reported no problems up to 42.8 grains. See:
https://www.65creedmoor.com/index.php?topic=5075.msg51806#msg51806

I don't understand the primer issue because the same primers are recommended for the higher pressures of 6.5 PRC. Maybe he was using magnum primers or mil spec.

As regards the guns, I believe you are correct. Apart from the engineers/designers at Savage - who won't tell - no one will know.

Magnum or military primers would typically be harder to pierce, not easier.

 

[KenC]

Magnum or military primers would typically be harder to pierce, not easier.

That was my initial thought but then I remembered that magnum primers can substantially boost peak pressure...

 

[AJC1]

That was my initial thought but then I remembered that magnum primers can substantially boost peak pressure...

It's a cup issue and the mag primers have a thicker harder cup. Cci makes military spec primers like the 41 that are very tuff. The cci 450s are used by competition shooters running very high pressure and velosity

 

[Demi-human]

Only one person had a pressure issue (firing pin made a hole in the primer) at 41.5 grains,

That’s because, for his rifle, he was over pressure.
Every rifle is different. Some may get to higher charges for a variety of reasons, hopefully because they worked up to it safely, not be cause they found the...

the highest load of Hybrid 100V they put behind a 140 gn BTHP match bullet in 6.5 CRD (without damage)?

That last part is tricky, and why one needs to work up to it, knowing that one may not get there with their rifle. We don’t know what the damage threshold is for your rifle. Working up to it keeps one from needing to beat the bolt open with a mallet.

magnum primers can substantially boost peak pressure

I don’t know about substantially, but they do make more pressure. If that takes it into the red zone depends on how heavy it is already loaded.
The 450s are only good for another 30 FPS in my rifle, I wouldn’t call that a lot, unless I was loading at the bleeding edge. Because they are a little thicker I can put a little more powder in them, while staying within book listed charges.

I know it gets tricky when there isn’t any data, but there’s no replacement for the work up when loading. Looking for pressure signs and backing off will tell you the top.

 

[Demi-human]

But then, there’s always going straight to the source...
http://www.hodgdonreloading.com/data/rifle

There are two here to look at for 140 class bullets and your powder. By the pressure numbers, these are not lacking anything.
(Link looks generic, should go straight to 6.5 CM?)

Darn, it doesn’t. But the menu is easy to use, and free!