Rl22 in 300 win mag

[Mooseknuckles]

Just loaded up some 200 grain accubonds in my 300 win mag. I got good grouping from the load just under 1 moa at 100 yards. Just wonder what I should be getting for velocity havnt had a chance to get to a chronograph. The load is 70.5 grains of rl 22, coal at 3.340 out of a 24 inch barrel.
Thanks

 

[Lefty7mmstw]

Just loaded up some 200 grain accubonds in my 300 win mag. I got good grouping from the load just under 1 moa at 100 yards. Just wonder what I should be getting for velocity havnt had a chance to get to a chronograph. The load is 70.5 grains of rl 22, coal at 3.340 out of a 24 inch barrel.
Thanks

With a 26" browning 300 win using win brass and 215 primers I was getting 2920 fps with either the 200 gr sierra or 200 grain nosler partition using 71.5 grains rl22 for the fuel. To answer more directly, I'd say between 2800 and 2900 fps depanding on whether you have a "fast" rifle or not; some guns just develop a bit more speed with a load than the next one and a chrono will get you closer than my crystal ball will.
I've gone to 165's only in my 300 win as it'll do 3250-3300 fps with them, but the 200 can be a good way to play if you don't have a 300 rum to toss 180 gr+ bullets like I do.

 

[Mooseknuckles]

Thanks for the input. I will have to find a chrono to shoot through here soon so I can get an actual read on fps.

 

[4xforfun]

My thoughts.....300 Win mag and RL-22 are a match made in heaven!!!

 

[Lefty7mmstw]

My thoughts.....300 Win mag and RL-22 are a match made in heaven!!!

Dang good choice for sure!!

 

[Joseph Bowden]

Have only been reloading for two years. The books that I have either recommend IMR 4350 or IMR 4381 for .300 win mag. of the two the 4350 seems to be working best for me. Tell me more about RL-22.
Joe Termite

 

[livtoohunt]

Add H1000 and H4831sc to that list! RL22 is a great place to start with 300WM, but is not the most temperature stable.

 

[cwinner]

Tell me more about RL-22.
Joe Termite

RL22 is the most accurate powder in my 300 Mag, H1000 is second and more temp stable. RL22 would be slightly slower than H4350, it works great for 180gr and heavier bullets.

 

[Lefty7mmstw]

Have only been reloading for two years. The books that I have either recommend IMR 4350 or IMR 4381 for .300 win mag. of the two the 4350 seems to be working best for me. Tell me more about RL-22.
Joe Termite

rl22 is usually at a full case or slightly compressed with most bullet weights in the 300win. I use it with 165 grain hornady pills in my lh browning a-bolt ss boss and get about 3250 fps muzzle velocity with 3 shot cloverleafs and ten shots rapid fire into an inch. Yep it's a bit slower if cold and a bit faster when warm, but it's predictable and being double base has higher energy content per weight than single base so it'll usually net higher velocity per pressure.