powder for Rem 7mm mag ?????

[buzz1965]

I have a BAR in 7mm mag and was wondering if H4831sc would have the correct burn rate? I use it in several of my other rifles that are bolt guns. I have been told the burn rate is very important when reloading for autos. I plan to shoot 160 grainers. i hope someone out there can provide a little help.

 

[Grumulkin]

The slowest powders I would use are H4895 and Varget. My rationale is that the Hornady manual lists those powders as suitable in the M1 Garand. I know H414 is too slow for the Garand and H4831SC is slower yet.

It is possible that a BAR is more tolerant of slow powders than the Garand but I don't know that for sure.

 

[dakotasin]

best powders for the 7 rem mag that i have found are h-4831, and rl-22. be careful of varget in the 7 rem mag - that is a massive case and a pretty fast powder.

 

[CZ57]

Also two of the most recommended, when you consider that RL-22 is made by Norma for Alliant and is very close or identical to Norma MRP. 4831 will build max pressure with 160 grain bullets.

 

[Dark Helmet]

don't forget IMR 7828

 

[bigcim]

imr 4350

 

[CZ57]

buzz: why not load up a few testers with the 4831 SC? Single feed the first few and if they function, try 3 in the mag. If they don't work, bigcim gave you one that will.

 

[buzz1965]

I just had a chance to check the replies to my question. I greatly thank you all for the answers I received. The reason I was wanting to go with 160 grnrs is that I sighted in with 160's. The funny thing is the Browning doesn't like Winchester failsafe, but loves Federal classic 160's. I think it may have something to do with the moly coating. again thank you all

 

[LeonCarr]

RL-22

Just my .02,
LeonCarr