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Post by halodub on Sept 13, 2017 18:46:37 GMT -8
Hey there, I was wondering if it's possible to get a chamber reamer and rechamber a 300BO barrel into 30 American? I'm looking at getting a carbon fiber barrel for competition uses, but wasn't sure if the pressure difference was something I would have to worry about with doing something like that. I've seen a few barrel blanks but they are not set up for mounting a barrel extension, and I am not sure if they are drilled for a gas block either (which wouldn't be hard to do, just don't want to potentially compromise the structure of the carbon fiber). Thanks in advance!
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Post by tonythetiger on Sept 13, 2017 19:33:31 GMT -8
I can't answer your question at all,but I'm very curious what kind of competition your into thats an ideal use for 30 American?
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Post by GLSHOOTER on Sept 14, 2017 6:44:12 GMT -8
Hey there, I was wondering if it's possible to get a chamber reamer and rechamber a 300BO barrel into 30 American? I'm looking at getting a carbon fiber barrel for competition uses, but wasn't sure if the pressure difference was something I would have to worry about with doing something like that. I've seen a few barrel blanks but they are not set up for mounting a barrel extension, and I am not sure if they are drilled for a gas block either (which wouldn't be hard to do, just don't want to potentially compromise the structure of the carbon fiber). Thanks in advance! It could be done. It's long enough to clean it up.The operating pressure is no issue with the A-30 compared to the BLK. I didn't know of anyone offering blanks of CF. If it is a blank without an extension then no gas port will be drilled. If you're shooting this in 3Gun I have no idea why as the extra weight is nice and if you want to shoot MAJOR with the 30 you will find that recoil will come into play. I know just a tad about both of those things having played over the past three and a half decades. This is me a few years back at the AZ Police Games winning a Gold. I got lucky that day..lol On the plus side it is easy to ake the PF with the case.  Keep us posted about your project. Your biggest hurdle will be the $300.00 plus for the reamers and HS gauges as BHW will not chamber barrels and since we designed it no one else has it. Greg |
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Post by halodub on Sept 15, 2017 1:31:43 GMT -8
I can't answer your question at all,but I'm very curious what kind of competition your into thats an ideal use for 30 American? I would be using it for 3gun, as I want something that's unique (not 308) but still capable of making major with good accuracy. I was considering using 6.8SPC, but some of the loads that make major are pretty hot and if I'm going to be running the rifle hard, and consistently, I don't want to worry about parts failures or something of that nature during competition. Not that it'd be an ideal use, but it'd just be different, yet capable. I've always had a knack for overcomplicating things just for the sake of saying I made it happen lol. That's good to know about the 300BO barrel being capable of rechamber. That means I could go with the company I originally intended on going with for the barrel instead of having to go through the troubles of starting from a blank. Christensen Arms offers CF blanks in a few different calibers (.243, .264, .284, .308, and .338), but the troubles of going through and drilling a gas port, mounting the barrel extension, etc is something I really didn't want to go through if I didn't have to. Thankfully, the rechamber of a 300BO barrel is now a viable option knowing that pressures won't be an issue. As far as the weight, I would be running a 20 inch rifle, as well as using it for hunting, so I'd like something a bit lighter to allow faster target acquisition and not have to heft around a heavy rifle climbing in and out of treestands and such. I would use a forged upper/lower and a heavy-ish buttstock, so I think in the end the weight would be able to manage a decent bit of recoil. I'm also not too recoil sensitive, but haven't shot 30 American before so I may be mistaken about the actual felt recoil from this round. Most of my shooting was with a very light single-shot 12 gauge Ithaka when younger, so I've built up a slight "immunity" to it lol. That's awesome that you got gold! What caliber were you using/do you use for matches? I found a reamer on PTG for 30 American (here); is this an "official" reamer or is this something that isn't going to be the same? I don't mind dropping some cash on something that I will be able to use a few times over, so the cost really isn't too much of a factor. I just want to make sure that I wouldn't be buying something that isn't what I think it is. Thanks for all the input though, it is much appreciated  I will definitely post updates as I get further in my build! |
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Post by GLSHOOTER on Sept 15, 2017 6:24:05 GMT -8
Recoil is aa bit more thna the 7.62X39 as the capacity is a bit higher and in the A30 and the pressures are also much higher.
A 30 American is a 30-30 case with a small primer. My reamer print is for the AMERICAN 30 NOT a 30 American. I would be making some calls on that but you will also need the HS gauges for it. JUST ANOTHER THOUGHT: The 30 American may well be a Grendel variant, there are over 15 of them BTW, known as the 30 Grendel, the 308 Arrow, the 30 ARX, the 30X43 the 30 AMU ad nauseum. The AMU shoots it in 3 Gun in Major also. I have at least three different prints on it that I have obtained over the years. I have a custom ARX that I may well shoot for fun in 3Gun one of these days also.
I can understand the lighter weight for movement and with less hits needed it will help some but when you get into a string of plates where all things in shot count will be equal your lunch will be served and eaten by anyone with talent. I won a stage down at the US 3Gun Championship in Texas shooting 4" plates at 200 yards. From standing to prone, bipod folded, all six down in a it under six seconds shooting a 6X45. The major guns didn't have a prayer in that Nationals that year. Many fixed shot strings and that's where they beat you. I've shot a tad of Heavy Metal also with an M1A etc. and the times slow down somewhat but at least then you are against the other HM guys but overall we suck for top of the heap.
I started with a 223 originally, OLY UltraMatch, but in the early days of 3Gun, we called it Multigun, there were no rules so they were setting up plates of steel that might weigh 30 pounds, A-Zone size, at 200 yards. A 223 would barely take them down and with an edge hit the targets would sneer at you. I built the first 6X45 in Oklahoma and shot 87's across the board. The extra punch was great and definitive on steel.
The rifle in the pic is the one I've used for over 30 years. I also use it in sniper matches at the Police Games where we shoot maybe 400 yards at times. along with flasher steel. The better BC and energy on the flashers helps me over run the 223 guys. To my knowledge I've never been beat by a Major gun in those matches. I have shot an M1A for grins in them and done well but then my handgun and shotgun abilities help just a tad..LOL
Looking forward to your quest but If it were I and I want to do the deed with it I would order up an 18" Lightweight from BHW and stick a big old comp on the end and go forth and conquer. Carbon isn't going to gain you much and I can assure the accuracy will not be as good as the stainless tube traditional style.
Greg
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Post by tonythetiger on Sept 15, 2017 15:13:14 GMT -8
I get wanting to do something different, just understand that most matches around the country don't use USPSA Multigun rules or major/minor PF scoring. Typically heavy division means 308 Win only, so you'll be scored with the guys running 223's. There are matches that allow all manner of 30 cals into heavy but it's not that common. And don't forget the part about losing brass and probably 80%+ of your shots in a typical match being on paper inside 100 yards. Spending more money to be different might lose it's appeal.
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I will definitely post updates as I get further in my build!