460 magnum reloading questions
- Thread starter Dfish1247
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ruggyh
Member
What are you calling a hairy load? 62KPSi?
Currently I am traveling-with no access to my notes on 300 Mp
but will do so on my return
Just because powder have similar burn rates doesn't mean they will behave similarly or are similar- there are numerous other properties that effect any given behavior of the powder.
300 MP is slower than H110 and lends itself better to bullets on the heavier end of the cartridges range.
With a lower specific gravity than H110, 300 MP will be have greater case fill per mass.
That will be some compressed load. If you do manage to get the bullet seated-please provide pictures of the blown cylinder and missing top strap
Conversely use the Alliant's starting load data for 260 grain bullet and work up from there. Sticky extraction starts at about 62KPSI.
If I remember right you will be short of 2000 fps.
If you want more velocity (with 240 XTP MAG) than H110 can give safely, use Lil' Gun.
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Okay, very frustrating for me. I am thoroughly familiar with and practiced with safe and proper load development. Quite simply (and I thought clearly…) asking if you’ve worked with 300-MP and the Hornady 240gr XTP Mag bullet, certainly and absolutely NOT saying “I’m gonna throw 48 grains in a case and top it with the bullet, hold my beer”, just asking if anyone with experience can suggest what I might expect on the road beyond what the (expectedly poor and very) limited data from Alliant suggests.
More than three decades at the load bench. Over 10k loaded in the calendar year 2021. Never have I blown a cylinder or peeled a top strap. Is my experience limited because I’ve never damaged a firearm with handloads?
I’ve never even once in my life had to pound a piece of brass from a firearm.
Just wondered if someone has worked with this powder in this cartridge because it looks like Alliant did not give it much of a try.
More than three decades at the load bench. Over 10k loaded in the calendar year 2021. Never have I blown a cylinder or peeled a top strap. Is my experience limited because I’ve never damaged a firearm with handloads?
I’ve never even once in my life had to pound a piece of brass from a firearm.
Just wondered if someone has worked with this powder in this cartridge because it looks like Alliant did not give it much of a try.
Rogeronimo
Member
Forgive me, but I'll inject my experience with 300-MP. I can usually interpolate data reasonably well with a variety of powders, but 300-MP isn't one of them. My effort involved the 45 WIN MAG, and it got nasty really quick. I know this is apples to oranges, and I applaud you for polling this forum. I hope you find your answers in the absence of reliable data.
I’ll load a few next week and let you guys know how they do. I’m most anxious about how 2400 will do being that’s what I have the most of. Of course h110 will be tried as well.
Hoping for a 100yd golf ball load. If one works, I’ll try for cans at 200yds. Then I’ll call it good.
Hoping for a 100yd golf ball load. If one works, I’ll try for cans at 200yds. Then I’ll call it good.
STORMINORMAN
Member
The only cans I can see at 200 yards are...
TRASH CANS!
CHEERS!
TRASH CANS!
CHEERS!
Well, after not going to the range for far too long, finally made it.
Optic was a holosun 407c, 2moa dot.
The load was imr4227, 250gr xtp, wlr primer, and a heavy crimp. Tried two different powder loads, all else exactly the same. The load that was higher shot dead on golf ball at 100yds easily. 200yds, I had to use 20oz soda bottles because a 2moa dot is beyond too big to see the target. It hit the bottles nearly every time, I believe I had some side to side spraying going on. But, I’d feel confident for groundhogs at 200yds with this load.
No funkiness to the primers, cases extracted very easily and were clean.
I wouldn’t put this gun in an inexperienced person’s hands, but it’s nothing scary recoil wise, I’m not a fan of hard recoil, if that tells you anything.
Optic was a holosun 407c, 2moa dot.
The load was imr4227, 250gr xtp, wlr primer, and a heavy crimp. Tried two different powder loads, all else exactly the same. The load that was higher shot dead on golf ball at 100yds easily. 200yds, I had to use 20oz soda bottles because a 2moa dot is beyond too big to see the target. It hit the bottles nearly every time, I believe I had some side to side spraying going on. But, I’d feel confident for groundhogs at 200yds with this load.
No funkiness to the primers, cases extracted very easily and were clean.
I wouldn’t put this gun in an inexperienced person’s hands, but it’s nothing scary recoil wise, I’m not a fan of hard recoil, if that tells you anything.
buck460XVR
Member
Those bullets are intended for .45 Colt velocities and pressures...I'd be leary running them at legitimate .460 velocities for fear of jacket separation and/or premature and excessive forcing cone damage. Stick with the .45 cal XTP-Mags if you use Hornady bullets. Speer's 300 gr Deep Curls are also designed for the pressures and velocities of the .460 and work very well for me over IMR4227. Most other manufacturers of .45 cal jacketed bullets I have contacted, have said they do not advise the use of their bullets in .460 unless downloaded to .45 Colt velocities. Like ruggyh, I tend to stay below max loads with my .460, so the cases extract without having to drive them out. Makes so those high price cases last for a few more times too.
Your gun, your choice tho........
If any of the Speer or Xtp mags could be found, I’d have them to try.
I thought the reason not to use regular xtp was the jacket shattering on impact, not peeling off coming out of the barrel. I didn’t see any copper other than the blue stain on the swab while cleaning.
I thought the reason not to use regular xtp was the jacket shattering on impact, not peeling off coming out of the barrel. I didn’t see any copper other than the blue stain on the swab while cleaning.
ruggyh
Member
We have seen the 250 XTP loose it's jacket out of the barrel when pushed at 52KPSI which below 15%MAP for the 460.
You can use them just don't push the past their design velocity, it is listed in both the Hornady 9th, 10th editions reloading manuals (1500 fps if memory serves).
Note: they are also sized .451 as opposed to .452 of typically recommend jacket bullet for use in 460 S&W.
The 250 XTP's range is rated 800-1600 fps & the 240 XTP-MAG is rated 1100-2200 fps.
Both are .452".
.
.
dickydalton
Member
I loaded lots of 300 grain XTP Mags over Lil'Gun to 1900 FPS. The only powder I used in my 460 for 14 years was Lil'Gun.
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