.300 Win Mag plinking load

[4fifty8]

• referenced Lyman Cast Bullet Handbook for .300 WM reduced load guidelines
• today tried 147gr CamPro FMJ / 24.0gr Alliant 2400 / PPU brass / BR-2
• ~1900 fps mv accuracy not bad could likely improve by adjusting powder charge
• ***non-published load - safe in my Sako 85 ONLY - NOT a recommendation***
• less powder, less barrel wear, more target shooting
• compared to 110gr TTSX @ 4130 fps mv

 

[porpoise]

I use 38 grains vihtavouri n110 in my 300 weatherby magnum with the campro 147 grain. Velocity 2400. I have never used 2400 but I think it is very close to n110. I like shooting my mark 5 with this load.

 

[4fifty8]

Thanks...Vihtavouri N110 #61, 2400 # 54 relative burn rate I'll keep that in mind. https://bulletin.accurateshooter.com/2022/01/powder-burn-rate-comparison-table-download/

2nd interation think I'll try a bit more 2400 & poly-fil to keep powder against case bottom see how that does.

 

[porpoise]

I don't use a fill I am afraid of it. I pay no attention to my powder position when shooting and it seems insignificant for what I want to do. My attitude on fillers is simply a prejudice, I have no experience with it

 

[4fifty8]

Lyman lists some loadings with filler some powders could be position sensitive 2400 is 1 of them in some cartridges they list gonna try my .300 WM with & without filler see if there's a difference.

 

[4fifty8]

Fill vs no fill

• powder charge increased to 29gr 2400 / BR-2 / PPU brass
• ***non-published load - safe in my rifle ONLY - NOT a recommendation***
• no polyfil way erratic delayed ignition wide muzzle speed spread nice shotgun pattern
• with polyfil consistent muzzle speed no delayed ignition better accuracy

 

[4fifty8]

• today re-tried 1.9cc~24gr 2400 this time with polyfil
• ***non-published load - safe in my rifle only - NOT a recommendation***
• ~1900 fps mv groups way better from fouled barrel
• plink away