375 Ruger and RL 17

[sgt_zim]

My buddy is going off of data that I consider suspect.

When I run the numbers through GRT, I show pressure WAY over the limit, almost to 90,000

Anybody else ever shot 300 gr TSX in a 375 Ruger with RL17 as the propellant?

This is the load ladder
77.2gr
77.9gr
78.6gr
79.3gr
80.0gr
80.7gr
81.4gr
81.9gr

 

[375 Ruger Fan]

Is your friend measuring velocity? If your 90,000 psi calculation is correct, wouldn't the velocity be super high???

Hornady (10th Ed) shows max load for RL17 to be 78.9 gr for Hornady bullets and they tend to be pretty conservative.

 

[sgt_zim]

The guy who published the data (on another forum, so can't link it) is reporting about 2650 in a Ruger Alaskan, 20". GRT shows MV of 2869.

this is what GRT shows. Remember, TSX is all copper, so it has a higher initial pressure than gilding metal jacketed bullets like Norma and Hornady.

 

[375 Ruger Fan]

375 Ruger and Alliant Reloder 17

I purchased a Ruger M77 Hawkeye African (pre-muzzle break) with the express purpose of turning into something akin to the Ruger M77 Hawkeye Alaskan to hunt moose, brown bear (hopefully), coastal black bear, etc.......a true wet weather, coastal gun. The rifle has a 23 inch barrel, and is...

www.africahunting.com

 

[ldmay375]

My buddy is going off of data that I consider suspect.

When I run the numbers through GRT, I show pressure WAY over the limit, almost to 90,000

Anybody else ever shot 300 gr TSX in a 375 Ruger with RL17 as the propellant?

This is the load ladder
77.2gr
77.9gr
78.6gr
79.3gr
80.0gr
80.7gr
81.4gr
81.9gr

Totally different bullets. But, Speer does lists a maximum 375 Ruger load with their 285 grain bullet and Reloader 17 as 82 grains.

 

[Aussie_Hunter]

My buddy is going off of data that I consider suspect.

When I run the numbers through GRT, I show pressure WAY over the limit, almost to 90,000

Anybody else ever shot 300 gr TSX in a 375 Ruger with RL17 as the propellant?

This is the load ladder
77.2gr
77.9gr
78.6gr
79.3gr
80.0gr
80.7gr
81.4gr
81.9gr

So don't use the data then, stick to published data and work your way up from there to be safe

 

[F. Vaccaro]

My rule is I NEVER use data from any source except a reloading manual.
If someone gives me data I ALWAYS check it against a reloading manual.