18" 300wsm Powder??

[Legend]

Anybody have a powder recomendatuon for a 300wsm with an 18inch barrel shooting 165 to 180 grain bullets? I am new to the short barrel world and trying to get the best velocity.

Thanks for the insight.

 

[Legend]

Bump

 

[BigDog00]

H4350 has been the most consistent for me. RL26 will give the highest velocity but if you likely won't be able to find any for the foreseeable future. Check Hodgdon's reloading data for load info.

 

[IDElkmagnet]

Reloader 17 was best for me with 150-170gr monos.
H4350 was better with 180's.
17 is unobtainium now

 

[gobblinglawyer]

IMR 4350 is a solid powder in my 20” barrel 300 Short. And it’s findable which is more than I can say for my personal favorite in the 300 which is RL 17.

 

[Legend]

IMR 4350 is a solid powder in my 20” barrel 300 Short. And it’s findable which is more than I can say for my personal favorite in the 300 which is RL 17.

If RL17 is your favorite I should be set. I have around 10lbs.

 

[jjohnsonElknewbie]

Here's a sim from Gordons with 4350 and a 168 ELDM.

 

[jjohnsonElknewbie]

Here is RL-17

 

[Legend]

Here is RL-17

View attachment 870027

Dang that is a lot of information. Now I just need to educate myself on what the important stuff is and what I can ignore.

Thanks a bunch!

 

[jjohnsonElknewbie]

Dang that is a lot of information. Now I just need to educate myself on what the important stuff is and what I can ignore.

Thanks a bunch!

You're welcome, and pressure is the first thing you'll want to consider. This tool is a guideline, and every rifle will express pressure slightly differently in the real world. This load should be considered a "max" load given the top of the pressure curve resting at maximum SAAMI pressure. However, this tool isn't perfect, and you will need to work up your load based on observations working up to this theoretical max.

The cartridge length (bullet seating depth) can also impact pressure significantly for a given poweder/bullet combination. The default for this tool is the SAAMI cartridge length, but often guys will seat bullets out beyond SAAMI length, and this can reduce pressure, thereby increasing available capacity before hitting max pressure.

 

[Legend]

You're welcome, and pressure is the first thing you'll want to consider. This tool is a guideline, and every rifle will express pressure slightly differently in the real world. This load should be considered a "max" load given the top of the pressure curve resting at maximum SAMMI pressure. However, this tool isn't perfect, and you will need to work up your load based on observations working up to this theoretical max.

Sounds good. I am a very conservative reloader. Something about over 60,000 pounds of pressure that makes me take it serious!

 

[Luked]

Run H4350 out of my 300Wsm with 175 TMKs

 

[ZWA]

Smith just told me my 18” wsm is ready. Hope to work up a load for the 180EH or 185Juggs