30-06 ammo question

[GooseGestapo]

Its not a slide..its an oprod. An improperly lubricated oprod and improper disassembly do more damage than the ammo to the oprod. It's actually the opposite...lighter bullets increase the energy under the curve.

Incorrect. We’re not talking bullet kinetic energy. We’re discussing op rod acceleration due to the higher port pressure of slower burning propellants.
There is much more knowledge on this subject over in the CMP forum.
I suggest you check it out.
But I do agree with the improperly lubricated op rod part.

 

[ATex7239]

I have used both 150 and 180. Both worked well in my rifle. The deer won’t know the difference.

 

[jeremy2171]

Incorrect. We’re not talking bullet kinetic energy. We’re discussing op rod acceleration due to the higher port pressure of slower burning propellants.
There is much more knowledge on this subject over in the CMP forum.
I suggest you check it out.
But I do agree with the improperly lubricated op rod part.

not incorrect...a light bullet and case full of slow powder has much more port pressure than a heavy bullet. 220gr and a case full (SAAMI max ) of slow powder has less pressure than a 135gr bullet.

Kinda moot point as commercial ammo isn't any more dangerous than milsurp ammo.

 

[GooseGestapo]

not incorrect...a light bullet and case full of slow powder has much more port pressure than a heavy bullet. 220gr and a case full (SAAMI max ) of slow powder has less pressure than a 135gr bullet.

Kinda moot point as commercial ammo isn't any more dangerous than milsurp ammo.

Show proof! Please.
ie: “load from a disc” or similar software. Specify bullet and weight, powder and charge weight, barrel length @24”, STP conditions.

 

[ripcord]

Show proof! Please.
ie: “load from a disc” or similar software. Specify bullet and weight, powder and charge weight, barrel length @24”, STP conditions.

I don't believe there is any software that will give Garand cylinder (port) pressures. Peak internal cartridge pressures aren't technically the issue with the Garand. What matters is the volume of gas produced and the way the Garand's action can get battered by excessive gas volume which leads to the action cycling too fast. This is why you see seperate load data with limited powder choices for the Garand in the reloading data. The typical powder choices for the Garand have a burn rate around that of IMR-4064. Anything very much slower is going to cause problems.

 

[jeremy2171]

Show proof! Please.
ie: “load from a disc” or similar software. Specify bullet and weight, powder and charge weight, barrel length @24”, STP conditions.

Already have...

https://bobistheoilguy.com/forums/threads/commercial-ammo-in-garands-test-resutls.385009/

Quickload can get you pretty close by using the muzzle pressure data point.

 

[jeremy2171]

I don't believe there is any software that will give Garand cylinder (port) pressures. Peak internal cartridge pressures aren't technically the issue with the Garand. What matters is the volume of gas produced and the way the Garand's action can get battered by excessive gas volume which leads to the action cycling too fast. This is why you see seperate load data with limited powder choices for the Garand in the reloading data. The typical powder choices for the Garand have a burn rate around that of IMR-4064. Anything very much slower is going to cause problems.

Quickload can give you port pressures.

powder slower than 4064 doesn't cause any problems in an inspec and properly lubricated garand

 

[Bighorn2500]

I use Winchester Super X Power Point 150gr. in my old Winchester .30-06 on Michigan deer. Shot placement over grain, seen plenty of people take whitetail with a .243 using 100gr ammo.