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Bulking or too much summer bbq?

I love the 55gr vmax for 223 and 75gr vmax for my 243.. but the superformance 53gr.. i dont recommend.. ive had 3 or more duds in each box ive bought

I have a Bartlein bbl gain twist 6.5-284 Norma. It's excellent. Most impressive was my latest load I worked up for it with Barnes 127LRX over H1000. The entire OTC testing with about 10 shots never measured over 1/2" on the nose. All 10 made, literally, what looks like a smiley face smile. I know it will take a year or more but I'm thinking about ordered a few 4 groove gain twist barrels from them.

Thanks for advancing our knowledge. Not gain twist but what about effect of "choke" on the muzzle end of barrels? Any benefits?

What about left gain twist to defeat the corealous effect.

Nice episode. Love the podcasts with Jeff, I will need to listen this episode more times so I can understand more. Comes from norway so my engelish is not the best 🤣🤣 but great podcast Seth and the Hornady team 🙂

Can you use gain twist to increase the life of a barrel in a hot rod cartridge like the 6mm Creedmoor. For example: you have an application the 6mm Creedmoor hunting white tail deer hunting that needs 1 moa standard of "Hit Probability" isolating all other factors like poor ammo or shooter error across 400-600 yards. Can the gain twist maintain that 1 moa standard "Hit Probability" past the normal barrel burn out of the 6mm Creedmoor life into 6000-10000 rounds before the barrel need to be replaced. The Applications of this method is not to have the smallest group on the cutting edge but, to have an heirloom rifle that the shooter can practice with at a higher round count while maintaining the targeted standard thought the life of the barrel? Or in the M4 where the Military targeted accuracy of the M4 is 4 Moa over the life of the barrel. Can gain twist barrel allow for the Military set a new accuracy standard applied to the life of the barrel with the same firing cycles set by the testing trials? Can the Military use this principal to give the US troops a new found confidence of 1 MOA from their service rifle? Can it also allow for a targeted "Hit Probability" in a longer strings of fire? For example, in a large frame AR using .308 can you maintain standard "Hit Probability" of 1 MOA with a 5 shoot string to 20 shoot string while maintaining the "Hit Probability" standard. Application would be gas PRS comps or Urban engagements in the conflict area? This also take out all of other problems that Myles has encountered with the gas system and accuracy.

So fire form brass, don’t anneal until the after the third firing? Then the third firing should be the most consistent, accurate in the rifle? I’ve heard many shooters swear by loading after each firing for best accuracy. 🤯🤷‍♂️😳

Way over my head! I am just trying to make enough velocity to make the bullet preform in the game animal and shoot a good group at 200 yards but very interesting how much you can even measure like exting pressure versus starting is mind blowing drag forces to gravity having the ability too measure such things is very interesting! Thanks for making the work day go by!

Thanks

I have a 6.5 prc that I am using Hornady 147 gr match that seems to be too long to chamber from the mag, any suggestions other than notching my feed ramp

When I meet a stranger and they ask me what is my Hobby and I tell them, Bullets ballistics and trajectories. Oh the looks I get. They look at me as if I'm the Thomas Crooks😂

Flat base bullets vs boat tail Advantages and disadvantages of both may be a good topic or at least partial topic

One of the barrel makers (from Bartlein, IIRC) has said that if the twist rate drops at all near the muzzle, accuracy will suffer. Apparently, this can occasionally happen with button rifling if there is a impurity or hard spot in the barrel steel. He said that a small gain twist can be useful just to assure that any error in the rifling process will be overcompensated by the twistrate gain.

Miles, somewhere in one of the podcasts you were on you mentioned your PRS ARC loads. Wondered if you could provide them again here. I’m looking for a point of reference other than the book. I have been shooting 108 ELDM with 28.6 of LVR. Also ran a few loads of Varget 27 grains with the same bullet, to much pressure. Running this in a Blueprinted Rem 700 action with a 24” barrel, diamondback special trigger.

Yall need 6mm arc “varmint express “line with the 58gr v max 😮‍💨

Hit information overload at 41 minutes, will have to come back and listen to the rest, and most likely listen to entire podcast a second time. Valuable information but does take some processing.

I have a question. The constant twist rate, torque chart is low, while the parabolic gain twist rate is high and consistent from start to end. Does that mean that the barrel ends at the determined twist rate? Would it not be better to have a section of the rifling to be standardize, closer to the muzzle to mitigate the torque. For example using an 18 inch barrel, a 1:12 gain twist to 1:8 over 8-12 inches of travel with 4-6 inches of standard 1:8.

🤔 I Would Love To See You Do A Follow-Up Podcast On This and Include My Favorite Powder H4831SC? 🙏

🕵‍♂️ According To Gunsmith "Quarter Minute Magnum", Accuracy is MAXIMIZED When The Barrel Twist Rate Is Just Enough To Stabalize The Bullet! Thus, If The Bullet Stabalizes At a 1 In 9 Twist - Accuracy Will Get Worse As You Go To a Faster Twist Rate! It Sounds As If You Guys Agree? 🤷‍♂️

I have seen personally that different powders resulted in different group sizes at different velocities. I did a 100 round 223 test with the Hornady 55 gr vmax bullet and the results were interesting. Varget was the best result, but I found more interestingly H335 started to group at around 2800 and with a increase in about 1 grain of powder the group size went from about 1" to over 6".

Has anyone looked at how storing your rifle can affect accuracy. Example. Stored horizontal, the barrel is being pushed down by gravity for days or weeks at a time. Stored barrel up or down, or stored barrel up but at an angle or leaning against a wall. It seems this could account for a shift in accuracy at distance. Great information Thanks

Seth on that hornadymania BROTHER

Carcano baby

She an inaccurate rifle

I always liked varget, and have recently started trying W760

This is a wonderful podcast.

Zero questions; only confirmation. Tapped our at 40:29 due tp intense saturation and overwhelming encroaching images of copious High V. Impacts at center base projectile clouding focus me thinx regroup.

One of the things I've always wondered about is what the pressure is and where the bullet is as it moves down the barrel. where is the bullet when peak pressure is reached ? Also, would different powders reach max pressure at the same place using the same bullet ?

I think saying what a medium is, is it 35 cal to 40mm?

Have a 264wm 10-8 gain. So despite being a small caliber. So the 10 at the action, lessens torque of the jacket/rifling, helps slow throat erosion? So a burner like 264wm or 6.5 prc would get the benefit of the 8 twist for large bullet stabilization, and extend barrel life?

Back in the day Pole was a maker of left hand twist with gain twist

I've ruined a bunch of brass by over annealing - mainly pistol brass. Now I err on the short side. Call it stress relief 😅

One word…..BRASS! How the hell do you expect a cartridge to succeed if you don’t make components available!? As the sole supplier brass for this thing you are really dropping the ball on this. It is damn near the same brass as the 300 PRC, make a run of 375 please!

Dang bro!!! Seth gettin swole!!! Great podcast!!!

Looks like Seth is getting geared up for Hornady's WWE team!

What are we referring to as far as small, medium, large calibers in military anything under 50 cal was small. In world of hunting and comp shooting what calibers fall under these reference sizes?

Do you mean gain twist and wax on the stache? Great podcasts, keep it up Hornady.

I can feel the difference between annealed and non, when seating the bullets. You can also see the difference in the seating depth, although not more than a thou to 3 thousandths, but either way annealing provides more consistency for me across the board. I should mention that I do only check every single round when I’m using a arbor press and chamber type bullet seating die, so I can’t say if it’s exaggerated or non existent, in traditional seating dies from a press.

Ahhh, good ol' mom's Aqua-Net. That was me at around 10 years old.

Is it possible to quantify the variability trade off vs the BC improvement? Why - almost universally if not universally top F class shooters point bullets. Through large data samples they have proved small groups at 1000 and an improved BC i.e. the drag variability while existing is of less significance in the F-class shooting at 1000 use case. I think the DVRT issue may have a very specific application that's not coming across in the podcasts?

Maybe I missed it but what would be the closest non cx equivalent to use as a cheaper practice round while building loads that could then be truthed with the real deal?

Your common Joe, especially in today’s world, just doesn’t have $1500 minimum, to spend on an induction annealer. Why I went with the AGS Customs 3.1 annealer. Works great, great company, great customer service! You can see how far down the case the heat has gone. If the heat mark it just below the neck, it’s fine. If it isn’t, then the stuff from Lake City is bad. The stuff from every manufacturer who leaves the annealing marks on the brass, is bad. And how dare he use the M-word!

How about a discussion about the 7.62 x 54R ?

Now I know how you lost all your hair

Just being curious, does annealing only apply to rifle cartridges, or would it also extend the life of straight wall pistol cartridges like the 454 Casull or the 460 Smith & Wesson magnum?

too much talking about other than annealing - sry r/

I experienced a 20fps drop in MV going from virgin to 1F brass in my 270WIN. I chose to increase the H4350 charge 0.5gr which brought the MV right back to where it was when the brass was virgin. I have also observed that annealing after every firing produces less delta in my shoulder bumps when FL sizing which cannot be a bad thing. For some reason that I cannot explain, annealing is the least annoying step in brass prep. Cheers!

Did not hear a single word over that mustache

Now I see where people learn how to do hairspray flame throwers..!😅