338 Win Mag Powder & Primer Ideas

[Shooter2000]

I have a Browning Bar with Boss that I am going to start building loads for and I have read on this forum and others that it seems that RL 19 seems to somewhat be the powder of choice. My question is, what do you people seem to think about powder and primer :?:

I am using Nosler 200 gr Ballistic Tip with Winchester case. I have used factory Winchester 200 gr Lublox ballistic tips out of this and they have great terminal performance and ok accuracy. My goal is to reduce my cost every time I squeeze the trigger by creating my own and to improve accuracy.

I am open to all ideas.

 

[R Flowers]

Reloder 19 is undoubtably one of the best powders for the .338 Win Mag. I have had very good luck with IMR 4831 or H 4350 as well.

If you choose to use Reloder 19 be sure to use a standard large rifle primer instead of a magnum version. In some of their data the powder manufacturer recommends standard primers and I did some tests and found they were right.

I tried CCI and Federal primers both and in several tests I got better groups and more consistant velocities over the chronograph when using the standard versions of these brands of primers.

The 200 grain Ballistic Tips can be quite accurate. The last time I tested them in my Remington 700 Classic chambered in .338 Win Mag I was using IMR 4831 and my best three shot group measured 0.44 inches!
:grin:

 

[Shooter2000]

Thanks for the info

I have some IMR 4350 that I used in a couple of loads that I want to test this coming week. I already have some CCI Mag primers.

I am going back to the local supply this week and plan on pickup up some RL 19 to try and I do have some Fed. 210 (i think, cant remember right) primers that I might try.

I am also curios to see how the 180 bt and the AccuBond 225 will work in this.

 

[fredj338]

RL19, H4350 & IMR4831 are all good choices in the .338wm. I agree about the use of std. primers, I get better accuracy using a std. or match primer. For better accuracy, try the non moly bullets. I find them more accurate.

 

[john-brennan]

I use H4350. Or i have found 78gr. H4831 with a 225 Partition gives me 2950fps and 1 inch MOA. using a win LRM primer.

 

[LoneStar]

If you choose to use Reloder 19 be sure to use a standard large rifle primer instead of a magnum version. In some of their data the powder manufacturer recommends standard primers and I did some tests and found they were right.

Be careful what you read in on-line forums. Actually, Alliant's data uses the WLR primers for RL19/200 grain loads in the .338 Magnum, and these are magnum primers! See the Winchester site here:
http://www.winchester.com/products/cata ... imers.aspx

At cold temperatures one may find that RL 19 performance with standard primers is mediocre to poor. :shock:

 

[Shooter2000]

At cold temperatures one may find that RL 19 performance with standard primers is mediocre to poor. :shock:

Thats interesting, I will need to rely on cold weather performance. I have put togther some loads with some non mag. primers and I am interested to see how they perform. I just need some free time

 

[Richracer1]

If you choose to use Reloder 19 be sure to use a standard large rifle primer instead of a magnum version. In some of their data the powder manufacturer recommends standard primers and I did some tests and found they were right.

Be careful what you read in on-line forums. Actually, Alliant's data uses the WLR primers for RL19/200 grain loads in the .338 Magnum, and these are magnum primers! See the Winchester site here:
http://www.winchester.com/products/cata ... imers.aspx

At cold temperatures one may find that RL 19 performance with standard primers is mediocre to poor. :shock:

That chart isn't right. The abbreviations do not match the wording. It's suppose to look like this:
WLR = Large Rifle
WLRM = Lrg Rifle Mag
WSR = Small Rife
WLP = Lrg Pistol
WSP = Sm Pistol
WSPM = Sm Mag Pistol

 

[shaggy357]

At cold temperatures one may find that RL 19 performance with standard primers is mediocre to poor. :shock:

Richracer1 is correct. WLR primers are Winchester Large Rifle. They are NOT magnum primers. I have never had probs with RL19 at cold temperatures in Southern Oregon where I grew up, nor up here in WA. But cold here in WA is only down into 20s or so.

Steve 8)