IdaRam: please elaborate on the factory Winchester barrel. What made it so bad?
Hi
@375 Ruger Fan ,
I really like Model 70's, so it pains me to say this, but the barrel on my .375 is truly awful. The reason I say that is how it shoots as well as how it looks.
A little speculation to begin with: I can't swear to it, but I'm pretty sure it is a "cut rifled" barrel. I don't know that to be the case, and that is a surprise to me if true, but there you have it. If so, I imagine Winchester purchased the blank from a supplier of cut rifled barrels.
Not that this matters in the least, it's just not that common. Most majot manufacturers are using button rifled or hammer forged barrels. Cut rifling takes a lot longer to produce and consequently is more expensive, generally speaking.
Enough of the speculation. The bore is just rougher than a cob. It looks more like a washboard than a barrel. Because it is so rough, it collects copper at a very rapid rate. I have had some rough barrels before, but nothing close to this one.
In addition to that, there is a big gouge in one of the lands about 10 inches forwad of the chamber. Because of the terrible fouling and issues getting loads to shoot (more on this in a minute) I looked at the bore with a bore scope. Holy moly, I wish I hadn't done that!
You can see where the tool dug into a land, carving a chunk out of it.
I have actually worked up loads with a 300 gr A-Frame and a 300 gr Solid that shoot somewhat close to same POI and group about inch and a half, so I've made it work for the short term, but it took a lot of development to get to that point.
Usually it seems point of impact changes more vertically than horizontally between different bullets and loads. This gun shifts dramatically left and right with different bullets and loads. For example, 300 gr Accubonds don't even hit paper when the rifle is zeroed for A-Frames at 100 yards. The AB's hit about 8" left and 4" higher.
The rifle has a HS Precision stock and a nice bedding job, as well as a trigger job. I bought it used off gunbroker and I'm pretty sure they guy who owned it before me had the same issues so he sold it. Can't really blame him
Anyway, I believe a new high quality barrel will make this a fantastic gun. I love everything else about it. It fits great and the action is smooth as glass. And it feeds flawlessly.
So there you have it! My Sunday morning barrel rant