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Reply with quote  #1 
I plan to purchase a Browning BAR for larger animals, and have narrowed the calibers down to 300 WSM or 300 Win Mag, after having talked to a very knowledgable friend and gun store owner who recommended the 300 WSM. I plan to shoot pigs and bear, with occasional deer or pronghorn hunting at longer distances. I realize that the BAR would hold one less cartridge in the clip than would the Win Mag. This is not an issue. I plan to look for the Safari model without the BOSS.
Reply with quote  #2 
I would consider only reliability. Don't know which is worse, short stubby 300WSM or magnum belt in 300WM. I'd say 300WM is tried and true in BAR and pick it.
Reply with quote  #3 
I like your web handle so I'll give you some great advice about the Browning BAR.
If you use Weaver rings put the knobs on the left side of the rifle not like you see them in the pictures.If you put the knobs on the right side it will jam up on you every now and then.
if you buy a used gun with the rings already on it flip it upside down and look for brass on the rings.If you see brass ask the guy selling it if its a jammer.If he says no he's a liar so reduce your offer considerably then flip the rings around when you get it home.
Reply with quote  #4 
I've had a 300WM BAR W/Boss for almost 10 years, though I don't shoot it much anymore I took it out last summer and it surprised me. I have the stuff to reload for it, but took some factory ammo out while I was testing some other guns. I shot a 3-5/8" 3 shot group at 762 yards while sighting it in after sitting in the safe for years, this done with 180 Rem coreloks.

Its a nice hunting rifle, but it is heavy. Remember the whole selling point of the 300WSM was to have long action performance in a short action (faster bolt cycling), which means nothing in a semi-auto. So go for the horsepower of the 300 Win Mag.

Reply with quote  #5 
If I purchased a 300 Win Mag, would I have to buy one with a BOSS to help handle recoil? Since muzzle breaks are noisy, what is the BOSS CR all about? I have seen them on websites, but I haven't been able to find an explanation as to what they do, other than act as a substitute for the actual BOSS muzzle break. Is the BOSS CR an accessory offered by Browning? I saw nothing in their catalog about it, and can't find it in any of the catalogs.

As far as the BOSS goes, I have read pro and con about it. Is it really necessary for a rifle that will not be used on the rifle range, other than for sight-in purposes? Since I doubt if I will ever shoot black bear or elk, why not just use a .270 BAR without a BOSS? Because of greater accuracy? I just shot about 15 rounds at the range with my bolt-action .270. The recoil is not over-the-top with the bolt action, and if I purchased a BAR in .270 I could reload for both rifles, using the same die, and alter only the bullet seating depth, die settings and maybe the powder charges, plus have the advantage of using the same brand of bullets I use in the bolt-action Remington (at this time, Nosler Partitions and Accubonds).

So....what's your advice? Go for the .300 Win Mag with or without the BOSS, or stick with the .270 BAR (with or without the BOSS)? Keep in mind that if I went with a .300 Win Mag, I would expect the rifle to easily reach out to 300 yards with some good accuracy....
Reply with quote  #6 
The BOSS isn't just a muzzle brake... it's essentially a barrel tuner that comes in either a ported version (brake) or un-ported version (the CR), intended to allow you to tune the gun to the load, instead of the other way 'round.
Reply with quote  #7 
Do the positives of the BOSS outnumber the negatives. I.e., is this really something that justifies paying the extra bucks to have on the rifle? In other words, if the BOSS were to improve groups at, say 200 yards by 1/4 inch, to me I would just save the money, unless the BOSS really also acts to reduce recoil dramatically.
Reply with quote  #8 
Barry, big game rifles do not require super tight groups. A tuner/Boss/CR is to help the person who actually does want to squeeze the best groups from their rifle. It takes some experimentation to find the best setting for a Boss for your given load. If you plan to practice with this rifle more than an average hunter a BOSS/CR would be beneficial to a degree.

As for reloading, the dies you have already may not work. Semi-automatic rifles require Full Length Small Base dies, which size brass to SAAMI specs just like factory ammo. Otherwise resized brass may have problems with brass fitting into your chamber.
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