quickload 270 win 3.50" COL 7 twist.

[assasinator]

new to forum .

thanks for the add.

i have tried asking for quickload data for 24n41 270 win, 3.50" COL, 3.89" bullet touchup, standard powder capacity, nosler tipped 150, nosler tipped 170. ,175 TGK.

my data for 150 ABLR is 62 grains of MAGPRO with no pressure signs, 2900 fps in my chrono. 27" stainless barrel.

other forums have just said, hey man but the quickload. i hope to get any help here.

thank you.

i been loading since 1987.

-bill

 

[assasinator]

btw i got load data from berger for their 170 EOL. i am waiting to get the 150 and 170 AB bullets running.

the 150 nosler tipped shoot moa without a target center point.

i bet it will shoot crazy when i try to.

the scope is a meopta optika6 FFP 3x18 56mm 30mm tube. love the lit reticle. best scope i have owned. rd z plus

 

[JD338]

Welcome to the forum. I'm sure one of the guys will post QL data for you shortly.

JD338

 

[assasinator]

ty man. -bill

 

[DrMike]

As soon as I'm home, I'll try to work a projection for you. I do have some questions, however. Perhaps you can clarify some points for me.

You state your column overall length (COL) is 3.50 inches. Then, you provide what you identify as "bullet touchup" as 3.89 inches. I'm unclear on what you are measuring at this point.

When you speak of "standard powder capacity," I'm unclear on your meaning.

Again, when you speak of "Nosler tipped 150," are you referring to the 150 grain Ballistic Tip?

Please identify what you are asking when you mention "Nosler tipped 170" and "175 TGK."

I'll be happy to do what I can when I am home and clear on what you are seeking.

 

[assasinator]

As soon as I'm home, I'll try to work a projection for you. I do have some questions, however. Perhaps you can clarify some points for me.

You state your column overall length (COL) is 3.50 inches. Then, you provide what you identify as "bullet touchup" as 3.89 inches. I'm unclear on what you are measuring at this point.

When you speak of "standard powder capacity," I'm unclear on your meaning.

Again, when you speak of "Nosler tipped 150," are you referring to the 150 grain Ballistic Tip?

Please identify what you are asking when you mention "Nosler tipped 170" and "175 TGK."

I'll be happy to do what I can when I am home and clear on what you are seeking.

i have both 150 ABLR and 150 ballistic tipped, but the quickload data for 150 ABLR, and 170 ballistic tipped, and sierra 175gr tipped game king.

the bullet touch up is freebore. they are all loaded at 3.50" cartridge overall length. the bullets touches the rifling at 3.89" the variance for the ogive profiles are slightly different i know.

the important data i need is for the longer bullets. the ballistic tipped 170 nosler and sierra 175 tipped game king using magpro and 24n41. i dont expect the 150s to work well with the 24n41, but maybe it will with the heavier bullets. the long thin powder column seems pressure sensitive for how little powder is actually metered.


thanks for the help.

-bill

 

[assasinator]

part of the data that berger sent me was 170gr EOL, 1.490" oal bullet, COAL 3.405"

AA4350 st44.5 vel2513 max49.6 vel2764 93%

magpro st52.0 vel 2555 max 57.9 vel 2868 102%


i might try to get some Re26.

i will try the 24n41 with the berger.

-bill

i will be loading the berger at 3.50" or possibly longer while keeping the boatail in the case. i dont like giving up neck tension. that is for later.

aside from the 175 TGK high pressure, loads are low speed and low pressure.

for example the 150 ABLR loaded with magpro at 55 grains starting load it ran 2500 fps lol. the 150 nosler tipped was the same. so, from 55 grains to 62 grains it ran 2500 to 2900 both bullets were the same speed within reason lol. and plenty accurate, but i have NOT even started working on accuracy.

once i get near max pressure for speed, i'll start adjusting the distance to lands, and then neck sizing. you know with annealed 223, the brass moves a lot and i have to trim it each load.

i kinda expected this brass to flow more considering the pressures. the trim gause does touch up a bit, but so far, not enough to square up the last chamfer.
i really never intended to load .30-03 or .30-06 base rounds. i dont like cartridges designed during the cordite era. they are thin and tapered. the loading options are limited IMO.
i do not include belted rounds after the H&H early designs.
short, fat, 'blown out' cases allow me to tailor both primers and powder. my belted mags with caliber and a half freebore allow me to cater to shorter or long barrels and still fly FAST and accurate. the only newer round i load is the 243 WSSM.

my 375 Taylor 20" barrel STILL shoots a 205 at 3050, a 235 at 2900, a 270 at 2650. all the loads are vastly different from 3031 used to shoot the 205 to 4064 for the 270. the 205 load uses a CCI 200 non magnum primer. a fast powder for the short barrel.

anyway i am ranting. this long, fast twist 270 is challenging. i really do hope i'm not forced to rechamber to 270-338 win mag with a long neck. trying to get the 270 modified to reach my goals is really the only reason i'm trying it. my assumption is that if i can get to slow 64 grains of powder, i'll get 170gr nosler and berger EOL at 3000.

thanks for all of the helps guys. this is why we wildcat. regular loading is boring.

-bill

 

[assasinator]

ordered quickload. never needed it even for unusual loads. hated to buy it for what might be just a few loads. even ackley might not work.

-bill

 

[assasinator]

been worried about getting scammed by the us quickload. finally got a tracking number for tomorrow. i'm pretty stoked to get data for the current 270 long/fast twist, and 270AI as well.
270 STW is the extreme version with my barrel.

its hard to find a gunsmith to do that chamber in alabama it seems. i can get the 270-338win mag chamber cut.

 

[assasinator]

lol got the CD roms today.

WE DO NOT HAVE A SINGLE CD ROM IN THIS HOUSE......and we got computers everywhere. all high end. my wife has a successful business and NO CD ROM.

nice. gamers desktop and gamers laptops.

nice......

does any high end pc/laptop have a cd rom? my laptop 2022, no cd rom. my business woman wife laptop, 2022, no cd rom.

she asked me WTF is that CD for? i was like pissed that she questioned my purchase.....it wasnt that, it was like WTF is a CD for?

nice. i gotta buy a cd rom somewhere.

 

[flyingagg]

Nope, your only option is to buy something like this

https://www.amazon.com/ORIGBELIE-External-Burner-Optical-Windows/dp/B09BC44T8K/ref=sr_1_1_sspa?crid=3B5INSHWQTUDZ&keywords=usb+cd%2Fdvd+external+drive&qid=1699317554&sprefix=usb+cd%2Fdvd%2Caps%2C98&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

Nekonos refuses to get with the times, some false claim about law requirements.
I stopped upgrating. I am not going to pay the extra S&H charge everytime when everything can be done on line.

 

[assasinator]

just bought 4 lbs of retumbo. i'd like to find a load that will let me use magnum primers and 165,170,175 .277 bullets in my chambering.

faster than 24n41....... slightly.


graf and sons have new shipments.

 

[assasinator]

so i got it installed.
the good news is, i have great baselines for the 175tgk.

the bad news is, there are no parameters for my chamber. its not a greek tragedy.
it was noted by another post that 24n41 pressure is pretty low. the other side of that is, if i use cci250 primers the pressure will climb by at least 10,000 psi.

so, if i load a reasonable starting load with LRM primers, it should do better. i ordered retumbo so thats even better.

i cant see buying the design software for this one cartridge and loading.

later. -bill

Cartridge : .270 Win. (SAAMI)
Bullet : .277, 150, Nosler AccuBond LR 58836
Useable Case Capaci: 60.976 grain H2O = 3.959 cm³
Cartridge O.A.L. L6: 3.500 inch = 88.90 mm
Barrel Length : 27.0 inch = 685.8 mm
Powder : Accurate MAGPRO
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 83 49.60 2272 1720 23222 8524 80.8 1.907
-18.0 85 50.84 2346 1834 25231 8885 82.9 1.834
-16.0 87 52.08 2421 1952 27404 9235 84.8 1.764
-14.0 89 53.32 2495 2073 29756 9574 86.7 1.697
-12.0 91 54.56 2570 2199 32303 9900 88.4 1.633
-10.0 93 55.80 2644 2328 35062 10210 90.0 1.573
-08.0 95 57.04 2718 2461 38057 10504 91.5 1.515
-06.0 98 58.28 2793 2598 41309 10781 92.9 1.460
-04.0 100 59.52 2867 2737 44843 11037 94.2 1.407
-02.0 102 60.76 2941 2881 48694 11273 95.4 1.356
+00.0 104 62.00 3015 3027 52893 11486 96.4 1.308
+02.0 106 63.24 3088 3176 57479 11676 97.3 1.261 ! Near Maximum !
+04.0 108 64.48 3161 3329 62466 11840 98.1 1.217 ! Near Maximum !
+06.0 110 65.72 3234 3484 67897 11978 98.7 1.174 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 66.96 3307 3642 73824 12089 99.2 1.133 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 68.20 3379 3803 80305 12170 99.6 1.094 !DANGEROUS LOAD-DO NOT USE!


these closely match what i saw at the range.

 

[assasinator]

So, the thread is not dead yet lol.

my gunsmith tried to rechamber the 270 to 270 weatherby, and his reamer pilot did not reach the rifling. My chamber has a .600” throat, so it takes a pilot that is longer. His reamer was more than 1” short.

I called my buds at pacific tool and gauge and they have a competition reamer with an extended throat similar to what i cut using their throating tool…..so the custom reamer has a 1” extension, a .337” long range competition throat, plus .510” extended length where a long pilot attaches.

my gunsmith talked to the owner and a reamer that will engage my rifling is being machined.

I have bought a few reamers and other parts from them in the past, and they bailed me out. So i missed deer season BUT it will be ready for next year. The 270win 7 twist shot .3” groups using my lead sled at 100yds. hopefully the 270 weatherby mag chamber is as good.

It’s gonna be up to 6 weeks from now that i get the reamer and my my gunsmith rechambers. I can’t freaking wait to see what a 3.600” to 3.800” COAL 270 weatherby can do. I can only stretch the 170 AB, and 175 TGK to 3.80ish.

 

[assasinator]

Rechamber turned out great. Working up loads now. 150.00 cost plus the reamer I had to buy.