The need for speed - your hottest load?

[dahermit]

And, being the guy that started this discussion that turned into an argument,

Not an "argument"...a "Forum".

An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages.

en.wikipedia.org/wiki/Internet_forum - Similarto Internet forum - Wikipedia, the free encyclopedia

Also, despite some of the posts, this thread was not an attack on someone's Puisuit of Happyness. It is, a discussion, which is/was a lot more interesting than someone gushing about a new gun they bought...unless of course they included a lot of good pictures.

 

[superspirit]

reynolds357, You are correct sir. But it hasn't happened yet thank GOD!

 

[JD0x0]

I found load data for the .270 win that listed an 85 grain bullet at over 3800fps in a 24'' barrel (listed as max load, but there seemed to be a little room to go "hotter" based on case pressure.)
That's pretty damn fast. And with most 85 grain boattails having a BC listed over .25 it's surpassing 50 and 55gr boattails in .224 cal

 

[Seven1]

110 VMAX out of my 26" 1-14 twist 300 WSM 3785 fps into .310 3 shot group at 100yds. Safe, accurate load, cant wait to try it out on a yote

 

[Clark]

CAUTION: The following post includes loading data beyond or not covered by currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

Puyallup Gun show 4-27-2013
Remington No 5 Rolling block model 1902 or 1910 model, looks like sporterized. Seller did not know what cartridge or bore. Neither did I. I was after the action. Prices at $495, offered $300, got for $400.

Tested on Monday April 29, 2013
38 special [much tighter than SAAMI chamber Remington rolling block No.5 1902 or 1910 model 24" barrel .062" firing pin, non SAAMI tight chamber .380" at rear and slight taper in front of that.
I was testing 38 special brass in a 38 special chamber with 158 gr JHP XTP 0.67". 1.420" OAL wsp win small pistol primer Bullseye
38 sp brass is either .375, .376, or .377" at the web, with .376 by far the most popular.
Reference max loads from Alliant:
5.6 gr Bullseye 38 special +P 1.435" 160 gr [QL 30,531 psi 1417 fps]
6.5 gr 357 mag 1.58" 158 gr JHP [QL 32,803 psi, 1509 fps]
Test shots:
7 gr ok 0.375" web [QL 49,634 psi, 1614 fps]
8 gr ok 0.378" web [QL 65,609 psi, 1739 fps]
9 gr ok 0.377" web [QL 84,935 psi, 1858 fps]
10 gr ok 0.378" web [QL 108,380 psi, 1971 fps]
11 gr primer pierced 0.383" web [QL 137,029 psi, 2081 fps]
switch to CCI 450 small magnum rifle primer
11 gr ok 0.378" web [QL 137,029 psi, 2081 fps]
12 gr difficult extraction 0.380" web. took two extra seconds [QL 172,445 psi, 2187 fps]
13 gr compressed load, jammed the rifle, pried it open, pounded out case with a ram rod., 0.385" web [QL 216,952 psi, 2292 fps]

 

[jmr40]

A fast load is not necessarily a hot load. I don't load anything that would be considered really fast. My fastest load is a 130 gr TTSX out of a 308 at just under 3100 fps. I'm 2 gr below book max and almost 100 fps slower than the expected velocity at a max load.

I have a load for my 30-06 that is 1 gr below book max that chronographs 3025 fps with 150 gr bullets. That is about 125 fps faster than most common factory loads. Some would consider it a hot load, but there are other loads listed that are 200 fps slower, but generate about 2000 PSI more pressure according to my manuals.

I don't load anything over what I have found in a loading manual. But I still load my 308 and 30-06 anywhere from 50-150 fps faster than most factory loads. By making careful powder choices it is possible to do this and stay well within pressure guidelines.

 

[chiefr]

I find it amazing that rolling block did not blow up.

One thing worthy of mention on all of this high-velocity is barrel wear. Also bullets must be capable of withstanding very high RPM in flight and friction generated heat.

 

[Bart B.]

CAUTION: The following post includes loading data beyond or not covered by currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

Back in the '60's and '70's, military service rifle teams often shot ammo with peak pressures at or above 7.62 NATO proof load pressures at about 66,000 CUP. Others were well above the 50,000 CUP max average pressure spec.

One, called "mexican match," was a standard M80 round loaded by Lake City plant with extruded DuPont powders (never WW ball powders; 'twas horrible for accuracy) and replaced its 147-gr. bullet with either a Sierra 168 or M2 173-gr. FMJBT military match bullet. Lake City's proof load was the one with a 173. Wonderful accuracy as well as unique sounding "pings" when the op rods on M14's and M1's slammed back to their stops before going forward. The following two loads also "pinged" the semiautos they were used in. None hurt op rods that were shaped and fit correctly for each rifle.

Another was the M118 round whose 173-gr. match bullet was replaced with the original Sierra 180-gr. HPMK long-tailed bullet, not the current short tailed one. The Army (and USMC, I think) teams won a lot of matches and set a few records with this load. Not quite as hot as mexican match, but about half way between standard service 50,000 CUP and proof load pressure.

The USAF and USN teams shooting Garands shot Sierra 190 HPMK's over 44 grains of IMR4320 in an arsenal primed M118 match case. This load had about 59,000 CUP; same as the Army's 180-gr. Sierra load. It also won its share of matches and record busting.

 

[TXGunNut]

Some catridges like to go fast, some shooters like it too. No problem if that's what you want and can do it safely. 22-250 is one cartridge that seems to be at it's best at max loads, 44 mag is another. During my brief adventures with a 22-250 I discovered some bullets never made it to the target, feel fortunate they stayed together until they passed the skyscreens. And no, I'll never type in that recipe!
Nowadays I'm into big slow chunks of solid lead and 2200 fps is "fast"

 

[Boomer58cal]

I run max in only two things... my 7mm mag and my .62 cal muzzleloader. I know the muzzleloader doesn't really count, but 1200 fps is screaming fast for a 900g bullet over FFF.

The only reason I load max in my 7mm mag is because my rifle happens to like it. The harder I pushed it the tighter it groups. 3212 fps average with a 139g Hornady SST's.

Sorry no 4000 fps loads here

Boomer

 

[Tom Matiska]

Can any members of the 4000 club expand on barrel life? Wood chuck accurate after 500 rounds? 1000?

 

[Kimber84]

Can any members of the 4000 club expand on barrel life? Wood chuck accurate after 500 rounds? 1000?

This is 3rounds at 100 yards after 550 rounds through my .204, at almost 4100 fps.


I've pumped another 250-300 rounds through it since with no evidence of accuracy loss. I'm consistently killing groundhogs at 400 yards, and rarely go beyond 500.

 

[Sure Shot Mc Gee]

No Sir!! wouldn't want to be the only'est wood chuck in a field your glassing over._

For such a small bullet. That sure is one tight 100 yard grouping. No doubt about that.

S/S

 

[Kimber84]

I'm convinced the .204 is just one of those inherently accurate rounds... I've fed this gun various hand loads and while some were .75", there were none that were greater... That's something I've been unable to accomplish in other calibers.

 

[Brian Pfleuger]

My .204 has about 750 rounds through it and routinely shoots under 1/2MOA 3 shots, often 1/3 MOA, at 100 and I'm typically at about 3/4 MOA at 400. The .204 runs at relatively barrel friendly pressures (58k max). So long as its not run hot (temp or pressure) it should last a good long time. Even pushing the envelope a bit, say up to 65k psi as other cartridges run using the same exact barrel dimensions and receiver, you'd probably be looking at at least 750 rounds of peak (BR quality) accuracy and many thousands more of acceptable hunting accuracy.

 

[Tom Matiska]

Nice groups K84. I asked because one guy I know of years back ruined his 243 after 500 rounds of 55's loaded to photon torpedo range. I suspect his real problem was that plugging and soaking the barrels overnight to remove the copper caused his pitting problems.

 

[boondocker385]

Does a 68 tornado (6800lbs) at 155 mph into a coyote count? Pretty fast and tremendous amount of energy delivered....

 

[Boomer58cal]

Got me beat! I shot a 67 bug(1700ish lbs) at a 1000 lb elk at 58fps(40 mph). The elk just walk away. The bug left on a hook.

Boomer

 

[jmorris]

250 grains of "x" with a 700 grain "x", if you take the time to work up loads that " might be safe" in your 50 BMG, or anything else, the might cause another " kaboom" thread and there are already far too many of them.

If you want a really hot 38spl load buy a 357. Want a hot 44 mag, buy a 460. Hot 30-06 load seems cool, get a 300 WM.

At least it gives you a reason to buy another gun...

FWIW a 180grain out of a sabot, in a 50bmg will go over 5000 fps, safely.

 

[dahermit]

If you want a really hot 38spl load buy a 357. Want a hot 44 mag, buy a 460. Hot 30-06 load seems cool, get a 300 WM.
At least it gives you a reason to buy another gun...

My sentiments exactly.