Does N570 really torch the throat quickly?

[Quicksilver338]

I mean it does erode, but I think that's also relative to how much you're burning. 90+gr in something is going to cook throats a lot quicker than a win mag or prc will.

 

[Jcook02]

I agree with Quicksilver338. 90.5 grains N570 gets my barrel real hot, real quick. There is a reason I won't let anyone shoot my rifle and my load when I'm not around. I have one family member that will absolutely torch my barrel in one outing. Self control and knowing what you are working with goes a long ways. For those times when I can't be there with them, I have a second load using H1000 that is much easier on the barrel.

 

[Mike D Texas]

I mean it does erode, but I think that's also relative to how much you're burning. 90+gr in something is going to cook throats a lot quicker than a win mag or prc will.

I can tell you it eats barrels in a 264 Win Mag Improved. I just set mine back and rechambered at -650 rounds.

 

[cape cove]

Barrel Life Calculator

pierrevanderwalt.com

Most powders heat potential are here. Just click on Propellant brand then select propellant type and the heat potential will appear under it

 

[cape cove]

Example N 570 is 4000 kj/kg and RL-26 is 3905 kj/kg.

 

[Quicksilver338]

I can tell you it eats barrels in a 264 Win Mag Improved. I just set mine back and rechambered at -650 rounds.

Ok let's add powder to bore ratio in there that will probably be more accurate.

 

[crashlanding]

Barrel Life Calculator

pierrevanderwalt.com

Most powders heat potential are here. Just click on Propellant brand then select propellant type and the heat potential will appear under it

I like that calculator, thanks, RL26 shows up but not vihtavuori N565

 

[cape cove]

@crashlanding
According to Quickload N-565 would be 3810

 

[marc357]

Forget the 5 shot, those 4th and 5th shots cook the barrel! Good call on the H1000, N165 and N160 are both good choices also.

Best of luck!

Same here, I ran a bunch of N165 and H1000 through my first .300WM barrel, (and was very nice to it, no long strings, just a few shots at steel, groundhogs and deer) and at 5000 rounds it threw a flyer here and there but still shot just under and inch at 100 yds.

Poor throat looked like a dry lake bed with chunks missing, LOL

 

[VinceMule]

BrBa, would be an interesting comparison for you to create another column with H1000, N165, and N160

 

[cape cove]

H-1000 / 3630
N-165 / 3500
N-160 / 3650
Most are in the link I provided above

 

[VinceMule]

When we were shooting a lot of chucks and jack rabbits, I switched from IMR 4064 to AA2700 in 243, 243 AI, 6 Rem, and 6 Rem AI. Throat live was dramatically extended by going to the AA2700 while maintaining very small group accuracy.

PO Ackley spoke some on how the length of the neck had much to do with throat life.

 

[65WSM]

How warm are the Swiss Nitrocheme 2000MR, 4000MR and the analogs from Florida, Match and 6.5 StaBall?

 

[sloride]

Thank you cape cove!Was also wondering about Win 6 5 staball