300 Ultra Mag
#12
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RE: 300 Ultra Mag
Like a champ. I forgot how a barrel should be built. I am so used to shooting rough barrels. It was expensive, but I would do it again. Gunsmith disappointed me a little. He got my throat a little longer than I planned. I still can't reach the lands and still have one caliber (.308" inside the brass. I shouldn't have bargained shopped for people rebarreling my gun. It was just Krieger seemed to have raised their price to $295.
#14
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RE: 300 Ultra Mag
Basically, they say. But they say alot if you know what I mean. That if you are reloading a say a 270Win. You want at least one caliber of bullet into the brass for sufficent neck tension or you might get blow by or whatever. By one caliber, that means at least .277" of bullet inside the brass. For a 300RUM, .308" of bullet seated in the brass. You really don't want that bullet so fragile you might knock the bullet cockeyed chambering.
#16
Join Date: Feb 2003
Location: Saginaw MI USA
Posts: 46
RE: 300 Ultra Mag
Bigcountry, The gunsmith most likely used a standard chamber reamer. On my next custom I'm going to have my own reamers ground to shorten the throat and also have the neck diameter made a few thousants smaller. I turn the necks on my Rem brass because a majority of it has runout measuring between the outside and the inside. What are your groups looking like now?
#17
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RE: 300 Ultra Mag
About 0.3" at 100 yards with Sierra 200 Matchkings so I shouldn't complain. But its a little finicky in seating depth. Which tell me it will finicky with temp changes also. So I blamed it on the throat. Haven't worked on hunting loads yet. Got some 180 Nosler Partitions loaded with Retumbo and 180gr Speer's ready to go for this weekend. But really don't plan on taking this thing hunting again. I think only lightweight these days. This is just my real real long range gun.
So you do your own reaming?
So you do your own reaming?
#18
Join Date: Feb 2003
Location: Saginaw MI USA
Posts: 46
RE: 300 Ultra Mag
I plan on building my next custom doing all the machine work myself. I've built a few custom revolvers in the past working with a friend of mine who is a gunsmith. Ready to step up to the big league and build a rifle. I know what you mean about weight, I lugged that 13lb .338 cannon all over the mountain in Colorado. A good sling realy helps! Next gun may well be a .300 WSM, Rem action with flutted bolt, light 24" fluted barrel. Nice light carry gun that still has good energy out to 500 yards. I've got some nice groups out of my .300 ultra using 180g Partition golds and RL22. Taking my son to CO this year, he'll be using it for his gun. One in our group shoots .300 ultra factory Partitions in stock barrel, 3/4 MOA out to 300 yards. He took a nice bull, cow and mulley this past season, plus killed a cow for another hunter that ran out of bullets!
#20
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RE: 300 Ultra Mag
DG, he's giving me the run around. I am finished dealing with him. Talking to Kreiger to have them ream the barrel they said without a doubt I should be able to reach the rifling with most bullets and stay under 3.6" OAL. So I bargained shopped and my smith said, he was renting a reamer and he was getting a special one the low freebore. For a hundred cheaper than Krieger. So three months pass and I get my gun, and now he's trying to say, "there's no way I could get a reamer to give you what you want cause no one will make one". I know its accurate, but its not the way I wanted it. So his answer is now that he has a reamer he had made for him for a 300Win mag. But again, this is not what I wanted. I just don't like being lied to. And he just didn't want to go thru his time getting a reamer instead of renting.