Phil Rizzo
Well-Known Member
Is there a significant difference in the heavy and slimmer CFW contours?
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Idaho Lefty
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- Jan 29, 2018
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My son has, the Heavy Contour Proof, 24 inch, in 7 MM PRC, Tikka Action, Stocky's Carbon stock and with, Near Max Loads of, StaBall HD, W/ 180 ELD-M's @ 2,985 FPS, can obtain, groups from, 1/2 MOA down to, .314 ( Ctr to Ctr ) with,.. 5 Shots.
He slowly shoots, 3 shots,.. WAITS, a few minutes then, 2 more,.. it's NOT,.. "Rocket Science" for, Us
Idaho Lefty
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- Joined
- Jan 29, 2018
- Messages
- 1,651
IMO ,. Cold Bore, "Fliers" usually come from, 1) a POORLY Stress relieved Barrel or, 2) the IMPROPER Bedding of, the Bbl'd action in the Stock.
And,.. 3) Mis-Matched,.. Bullet to,.. Twist
And,.. 3) Mis-Matched,.. Bullet to,.. Twist
5-10 shot groups often are an indicator how the wind is blowing on that particular day! Shooting in an underground tunnel or chicken house is different.
Hugnot
Well-Known Member
Shooting the NRA Hi Power, eons & eons ago - standing, 200 yards.1st & 2nd sighters - no more cold clean bore for next 50 for score.
I always clean & inspect rifles after use, like squeaky clean bores, then degrease bore with 93% alcohol & tight clean patches, a patch dampened in carburetor cleaner works better to remove high grade oil film formulated to protect & lube. Stainless is nice.
Important hunting, clean rifle at range then shoot 2-5, then go hunting for some big beast.
Rodents, clean bore, shoot a few not so far away, then look for a trophy shot many yards away (low pressure - there usually is another one out there. .
I always clean & inspect rifles after use, like squeaky clean bores, then degrease bore with 93% alcohol & tight clean patches, a patch dampened in carburetor cleaner works better to remove high grade oil film formulated to protect & lube. Stainless is nice.
Important hunting, clean rifle at range then shoot 2-5, then go hunting for some big beast.
Rodents, clean bore, shoot a few not so far away, then look for a trophy shot many yards away (low pressure - there usually is another one out there. .
Idaho Lefty hit the nail on the head, in my experience....quality barrels eliminate issues. I clean and degrease like Hugnot. I can not recall a Hart, Krieger, Brux, Muller barrel that threw Radical shots on the first cold bore shot in properly bedded stocks, and I run a muzzle break on every rifle, twisted properly. The rifles all shoot tiny groups. A first shot out of the clean barrel will usually be .3 out of the group, but if were to throw a shot 1.5" out, that barrel would be scrapped.
I fire three shots on a squeeeeky clean bore prior to hunting as a matter of good gun handling practice.
Much of the "thrown" shots that NON competitive shooters experience is from having too much coffee or just not being settled down. I was advised to sit at the bench and observe wind conditions prior to firing for five minutes(heart rate will settle down), then when I get on the gun, I dry fire several times aiming at the target as if I were firing a group, watching where cross hair ends up after the shot(follow through). My shooting improved significantly when using this discipline.
A very experienced Long Range gunsmith(now passed on) advised me that contours smaller than a #5 are prone to more "issues".
When a load is out of "tune", expect all kinds of issues, same thing with bullets of suspect quality.
I fire three shots on a squeeeeky clean bore prior to hunting as a matter of good gun handling practice.
Much of the "thrown" shots that NON competitive shooters experience is from having too much coffee or just not being settled down. I was advised to sit at the bench and observe wind conditions prior to firing for five minutes(heart rate will settle down), then when I get on the gun, I dry fire several times aiming at the target as if I were firing a group, watching where cross hair ends up after the shot(follow through). My shooting improved significantly when using this discipline.
A very experienced Long Range gunsmith(now passed on) advised me that contours smaller than a #5 are prone to more "issues".
When a load is out of "tune", expect all kinds of issues, same thing with bullets of suspect quality.
Phil Rizzo
Well-Known Member
slikmrc
Well-Known Member
Are you talking about Tubb TBN bullet coating? Or does he make a bore lube?
Phil Rizzo
Well-Known Member
slikmrc
Well-Known Member
Pac-Nor Barrels recommends the Witches Brew bore lube for barrel break in. May have to give it a try.
Phil Rizzo
Well-Known Member
I'm getting carbon out now, to see how much copper lies beneath after about 50 shots.
Late to the party but I have a CA ELR in 300 Rum. If I would get ambitious and clean it real nice it'll take about 7 rounds to settle it back in. After figuring that out I now subscribe to the "clean when the gun tells you too" policy. Exceptions are if I'm not gonna use it for a long while it will get cleaned. Have a dasher with a Bartlein barrel that wasn't clean for over 300 hard rounds and still shot bugholes.
Phil Rizzo
Well-Known Member
Took basically an hour with boretech and nylon bristles to get it 99% done.
I didn't know what to expect with the new monos but I'm pleased, started clean with WB bore lube and dried it out if you missed it earlier.
It's verified with a Teslong.
Witch's brew is more aggressive than Shooter's Choice for sure!
