I was wondering whats the most popular 300 win mag powders

[antitactical]

I recently accuired a belgium browning bar in 300wm from my grandfather I shoot a lot of the little guys (.222 22-250 204 on up to 6mm rem) and I don't do a lot of magnum reloading. I don't have the funds right now to go out and buy up 6 different types of powder and I was just wondering if there is a general powder that works in this caliber (like most 22-250 and 6mmbr like varget) and if anyone has any loads that work in their bar I'm not looking for 1/4 " groups but I would like 1-1.5" and I plan on shooting 180 gr bullets thanks for any input

 

[Preacher]

RL-22 is as good as any with the 180's.....
H-4350 would be my second choice, but wont deliver the speed of RL-22...

 

[bsc4444]

+1 on the R-22 for the 180's and 165's. For 165's and 150's H4831 or H4831sc,they
have the same burn rate and work well.

Brad

 

[338Lapua]

For heaver bullets 165 grs and up, im using IMR 4831 & H-1000 and for 150gr H-4831.

 

[antitactical]

I've tried reloader 22 with 168gr bergers 180gr combined technologies(nosler) 180gr remingtons and I couldn't get better than 3"-5" groups (and that's loading it single shot). I'm stuck with full sizing the brass because its an automatic and short Oal to fit in the magazines but I've read that some people are getting 3/4" groups I've scrubbed the bore with hoppes elite and let it soak for 30mins with .50 bmg until the patches come back with no blue so I guess I've got it clean enough. My grandfather collected many firearms through the years (at one time he had over 250 with a lot of higher grade rifles and shotguns) this gun was his "go to" for big game hunting he had a trophy room with about everything in north america. He shot it some but I doubt it has over 600 rounds. I just have troubles thinking he chose this gun when it won't do better than 4"@ 100yds. I'm Really particular about my reloading methods too. I'm just puzzled and was thinking it was the powder I chose. I would ask my grandfather if he was around but he's been attacked by alzhiemers

 

[DCRYDER]

I loaded for my buddy's BAR, it's the new synthetic stalker (all black). I was really impressed with it. I loaded 168gr Barnes TSX bullets to mag length with H1000. At 150yds it shot around 1" 3-shot groups. I was expecting 2" at best.

 

[M700]

Anti - Have you tried any plain-jane factory ammo in it yet? Many .300 Win mags shoot good old Remington green-box 180 grain factory ammo very well. That could give you a starting point.

 

[zorak]

we have allway's had real good luck with IMR 7828 with 180gr bullets. just try different powders and see what shoots the best out of your gun cause we all know that every gun shoot different the the other.

 

[moparman]

I have been trying imr 7828ssc and h4831sc with 210 vld bergers in my new bench rifle. Both are just under 1" groups at 300 yds with a 1:10 twist 30 inch bartlein barrel. I have'nt checked mv yet but the imr 7828scc seems to group slightly tighter so far.

 

[bozo699]

moparman,
I don't know what kind of game your trying to kill and @ what distances but if it lives in the USA a inexpensive Hornady interlock will kill it. As preacher said RL-22 or as others have said H-4831sc if it won't shoot these known accurate powders and bullet the accuracy your looking for 1-1.5" then call a top shelf barrel maker and get a new tube coming. I myself have never been a fan of either bullet you mentioned for superb accuracy,I know 30 guys will jump on here to defend the bergers and barns but if you want your headaches to go away get rid of those you are trying unless your shooting dangerous game, save money and tighten up your groups at the same time.
Wayne.

 

[antitactical]

Thanks for all the help. this forum is great for info

 

[jlmurphy]

You may have carbon build up in your bore, try JB bore paste on a bronze brush. I use H1000 and the Hornady 208gr. A Max bullet, I won't tell you how well it shoots, it would only depress you.

 

[bozo699]

moparman,
jlmurphy has a point, as bad as it is shooting I doubt carbon is your only problem but it will be easy to detect and simple to fix if it is your problem, if your shooting over a chronograph and your velocity continues to climb as you shoot it it would be a good indication of carbon. Clean your barrel to bare metal, no more blue or dirty patches coming out, then take a good tight fitting copper brush and scrub your whole bore but concentrate on the first 6 or 8" of the bore after you have scrubbed it some with the brush run a clean patch w/ solvent on it through the bore if it comes out black continue the scrubbing with the brush or the jb paste untill the black stops coming. Good luck to you.
Wayne.

 

[moparman]

Bozo699,
I believe you are trying to address antitactical on his troubles with his rifle and load. I am not where I want to be with mine yet either but seem to be on the right track. By the way its good to know there are plenty of people out there willing to help others
out with their experience and knowledge.

 

[bozo699]

moparman,
Thank you for pulling my head out, yes I was meaning to address
antitactical, sometimes I think I should take a axe handle to the side of my head before sending a post ;D
Wayne.

 

[moparman]

Antitactical,

Have you checked rings or base(s) for tightness or proper torque? Your groups may be related to one of these issues. I have had this issue before on a 300wm bolt gun. I had it out two days in a row trying to figure out what changed as my groups opened up. I was personally over looking the fact that my front base and rings were moving. That was a temperary mount/ scope set up with no thread locker knowing it would be changed out soon.

 

[dfry]

Also, check the scope, are the groups consistant although large? Rings, bases, and scope are the first thing I check if I am getting waht appears to be overly large inconsistant groups. checking the bases and rings for tightness and trying a known scope are the quickest way to elimate that issue. I can't tell you over the years how many people I have seen with this type of problem and its the scope that has gone south. I recently myself had a Browning a-bolt that would shoot 1/4" 3 shot groups with Barnes TSXs, then one day went to 4" and never would zero. Well the high dollar Nikon 30mm Tactical had crashed and burned, a quick change to a known scope told me immediately that the scope was bad. Sent it to Nikon for repair and upon return, the groups were back to where they should be. All the advise on the barrel, clean and etc. are appropriate, but to save a lot of headaches, if the rings and bases aren't loose, change the scope and give it a try. It will at least eliminate them as a possible problem immediately, or let you know that the scope is the problem. Dave