Id blame your gun smith or the barrel manufacturer thats just not except-able barrel life.
7-300 Norma Mag Improved. IT’S ALIVE!!
- Thread starter Huntnful
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WeiserBucks
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Did the bullets magically stop landing on point of aim or did I miss something?
Matter of time
Did you have any bullet blowups?
Phil Rizzo
Well-Known Member
It's not uncommon as you WELL know.
Seems smiths and barrel manufacturers "screw up" more on certain cartridges for some reason.
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Huntnful
Well-Known Member
It really does hahahaha.
Nah they still shoot. But I don't know how much longer lol. I'm just getting the new barrel chambered because that's the one I wanted to hunt with if I liked what I was seeing from the cartridge.
No blow ups yet
Quicksilver338
Well-Known Member
Alligator skin rifling is the new fad don't you know?
I'm kind of the same boat with the barrel situation as well. I have a middle ground barrel that's half experimental. If I like what I see then I'll be diving in with both feet.
I'm kind of the same boat with the barrel situation as well. I have a middle ground barrel that's half experimental. If I like what I see then I'll be diving in with both feet.
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Huntnful
Well-Known Member
Yeah I really had no realistic intentions of getting a 7-300 chambered in February and using that same barrel in October for hunting lol. I knew I wanted to test a pile of stuff in it to see plausible performance.
What I really wanted to see is if it would edge out a 28N, but with H1000. I've really grown to like that powder a lot. And at least in this barrel, it had super low ES, best accuracy (small test), and some pretty decent speeds also. So I'll commit to it, even it takes another barrel or 2 before season haha.
Huntnful
Well-Known Member
Using the brux as a fire forming barrel since it looked toasted and I got more barrels coming. This is 55 STRAIGHT rounds. As fast as I could shoot them.
First 3 shots went into one hole and first 10 landed into about a .6-.7" group. And all the far outliers to the upper left were probably the last 10 rounds.
So I'm not sure about the jacket failures specific with 4 groove barrels, but I'd imagine this is worst case scenario. Alligator throat and blazing barrel. Except they're only going 3010fps for fire forming.
Might buy another one these Brux's though. Thing freaking hammers lol.
First 3 shots went into one hole and first 10 landed into about a .6-.7" group. And all the far outliers to the upper left were probably the last 10 rounds.
So I'm not sure about the jacket failures specific with 4 groove barrels, but I'd imagine this is worst case scenario. Alligator throat and blazing barrel. Except they're only going 3010fps for fire forming.
Might buy another one these Brux's though. Thing freaking hammers lol.
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Phil Rizzo
Well-Known Member
Did the welding gloves affect your trigger pull on those flyers?
I would have my final migraine from that!
I would have my final migraine from that!
I want to see a video of the throat now....
RH300UM
Well-Known Member
Exactly what I'm doing with my barrel. I've got 50 hydro formed Lapua brass loaded for fire forming.
My Proof barrel is toast and will serve as the sacrificial fire forming rig.
It's how I've been doing it for the last 2 barrels with this reamer design
Quicksilver338
Well-Known Member
Bore scope bore scope bore scope!
Quicksilver338
Well-Known Member
Here's a thread on LRO talking about grooves and jackets and splosions.
Effects of 3 and 4 Groove Barrels on thin Jacketed Bullets
OK, much of this is related to what I have seen first hand and how we were able to fix some problems. The rest is from some research I have done over the years. It started years and years ago with reports of some jacketed bullets "blowing up" on impact with little to no penetration. Back then...
www.longrangeonly.com
