Cold Bore Accuracy - Is it even Important?
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- Опубликовано: 23 июн 2024
- What causes some cold-bore shots to go astray? And can a good rifleman eliminate them? This episode discusses bore condition, barrel quality, clean-bore shots, and the human element, debunking myths and providing practical solutions to overcome unexplained first-shot misses. ENJOY!
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IMO - cold bore accuracy is more important than the size of my group. I would rather have shot 1 on target and a bigger group than a tight group with shot 1 as the outlier.
Agreed. I've never seen any shift . My rifle shoots 5 into a quarter size ragged hole. No outliers. Any ammo I feed her she shoots em into 1inch or sometimes better
With the caveat that I have not, to the best of my knowledge, burned out my first barrel (on any firearm, except MAYBE an A2 while I was in service) on any firearm, here's my position on this.
1. We know - scientifically - that heated metals behave differently from cold metals, which in turn change the harmonics of a barrel from shot to shot as the barrel cools and warms.
2. We know that fouling, from none to minimum, to heavily fouled impacts the pressures and movement inside the bore, again changing point of impact.
3. We know that our expectations influence reality - If we get told a gun rifle "kicks like a mule" we go into shooting that firearm with that expectation, and it changes everything about how we handle it the first time or two.
The above in mind, we -know- that a cold bore, a dirty bore, and a cold shooter can all impact the PoI of that first - and subsequent - shots.
So the real question is, why is the individual shooting?
Is the goal meat in the cooler, or that trophy of a lifetime? If it is, then zero based on that cold bore, first shot of the day - It is, after all, probably the only one you'll take on the trail before the game moves.
Is it for scores in competitions? Zero based on the tightest group after the bore is warmed, and after you've done any between-shots/strings cleaning that you would for competition.
Is it just to be able to go to the range, and blow off some steam, no pressure for perfect shots/groups? I don't really have an answer here, other than just enjoy the sounds and smells of burnt powder, hot metal, and the report of the shot.
But yeah. Cold bore has a foundation in science - Which means, if the shooter should so choose, it can be compensated for.
Above in mind, to my way of thought, 'it was a cold bore' and 'the bore wasn't properly fouled' just become excuses for poor marksmanship - And I'm as guilty as the next guy of falling into that trap.
In competition shooting the group size matter more, but In hunting situation the first shot is the most important....! Training as you said is the Best medicin To tais problem....
Just zero with a cold bore at the likely distance .
Joseph, I will review this very interesting video. I am a Spanish hunter, who uses a Blaser R8 in 9.3x62 Mauser most for everything. I never let the Sun go down on a dirty barrel. If I shoot some boar, or roe deer, the barrel will definitely be cleaned next day... only if I was not able to to do it the very first day. I love to check the sighting with the ammo I use, but do not reload, nor do I shoot a lot.. It is more difficult to shoot a rifle in this country that it is in yours, with more legal problems, lack of facilities, etc..
I have not noticed any first shot deviation from my Blaser. I have a weird way to protect the mouth of my barrel. Most of the time, I cover the muzzle with electrician tape, in order to avoid humidity, rain drops, or even debris from entering the bore. I participate in driven hunts weekly, from several months, and, if I do not shoot, it usually remains in place.
Have you, or somebody else checked if there is any difference in velocity, pressure, impact, etc.? I doubt it, but if some of you have any experience, it would be nice to know.
Sweet video!
Hell yeah it is that’s the shot that’s gonna count on a hunt
I’m jealous of that rifle Joseph! Great video!
Very informative!
Thanks!
I have several rifles, I do alot of shooting, handload etc. I file every target paper I shoot. I would say 95% of the time, my first shot is usually faster than the next few shots. I run a patch through barrel to get out oil, then follow that with 2 patches wet with gun scrubber liquid. Then 2 more dry patches.About 75% of the time that 1st shot hits at same point of impact as shots 2,3 and 4.
That is one awesome rifle set up!
In a committed 45-70 I’ve used for over a decade of hunting, using cast bullets I have only pushed a dry patch through the barrel maybe 5 times, there is some light leading, but at 100 yards that bullet shoots right to my zero every year. 1.5”-2” groups so nothing precise but consistent.
I have noticed the velocity difference with a stone clean barrel. Using something lime Bore Tech you’d be surprised how much is actually in there, but cold bore shots I’ve yet had be outside that 1.5” group and that’s normally because it’s a stone clean barrel AND cold bore, more is probably on myself so I’m not concerned unless they are flying 3” off poa.
Great video love topics like this to compare to ourselves and experiences we have
Always look forward to seeing your videos. Keep’m coming
Very interesting
I prefer hammer forged rifling . My bore is like a mirror on the inside. Smooth n reflective
Great information
Like and Subscribe!
Joseph, you kick ass. Just so you know! P.S. that is one sweet BOOMSTICK ya got there!!
I think this is more of a problem of a cold shooter more than a cold barrel
I haven't found it to be an issue with my center-fire rifles. My muzzleloader on the other hand with a clean could bore is off by 5"-6" at 100yrds. If the barrel is dirty it's more or less shooting POA.
Clean *cold
Thank you for the content. If you can upload your videos as podcast just like Ron Spomer did, then it will be even better. So I can listen it when driving
Hey there! I’m Joseph’s son, William. We do upload these episodes as podcasts typically a day or two before we make it a YT video. You can find us on Spotify, Apple Podcasts, etc.
Lot to lot consistency for factory ammo and using powders for hand loads that are not temp stable should worry shooters far more than cold bore shot. Most guys cannot shoot well enough to differentiate a cold bore flier from the rest of the group. I bought a box of 7 mag ammo several years ago. My rifle didn’t care for it. My brother has a 7 mag that loves that particular box of ammo. I was able to find more and bought several boxes a few months ago. After inspection the primers are different and seating depth is 15 thousands longer. Guess what, his rifle hates the new lot of ammo. Another example is a friend that worked up a load for his 22-250 with H380 in 80 degree temps. Shot amazing. Tested it again in December in 30 degree temps and it opened up to 1” or so. Velocity dropped over 100 fps and his accuracy node changed. Seems like a bigger issue to worry about and make known than a first round cold bore being 1/2” away from the main group.
No such thing as cold bore shot ,it's a cold shooter.
Idiot much?????