Page Index Toggle Pages: 1 2 [3] 4  Send TopicPrint
Very Hot Topic (More than 25 Replies) Twist Rates (Read 20922 times)
SSShooter
Frequent Elocutionist
*****
Offline



Posts: 2942
Location: Southern NJ
Joined: Aug 1st, 2010
Re: Twist Rates
Reply #30 - Feb 28th, 2015 at 4:10pm
Print Post  
boats wrote on Feb 28th, 2015 at 1:05pm:
Top 10 each match Target and Cartridge Rifle Iron and Scope, 30 shooters total National Championships best shooters in the Country

One 38/50 All the rest 45's

Spend money for barrels and molds based on one guys results?

Not Boats

If you wanted to shoot a 38cal you might want to do so. Same for 40cal. 
However, I'll take issue with the "best shooters in the Country" part. Definitely some are. And, some are just cannon fodder. There will be a better group at the AZ match in two weeks. There is much discussion about whey shooters do not show up at the NRA BPTR Nat'ls due to the lame way it is run. Lots of folks stay away. Not that the caliber choices would change as the 45-90 & 45-70 are the cartridges of choice at LR at the moment. As stated, even the 45s & 44s are getting faster twist barrels from days of yore. 
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
Back to top
GTalk  
IP Logged
 
boats
Frequent Elocutionist
*****
Offline



Posts: 7727
Location: Virginia
Joined: Apr 23rd, 2004
Re: Twist Rates
Reply #31 - Feb 28th, 2015 at 6:01pm
Print Post  
Aren't you guys glad I stsrted this thread on a cold snowed in weekend ?

Boats
  
Back to top
 
IP Logged
 
Old-Win
Frequent Elocutionist
*****
Offline



Posts: 1821
Location: Minnesota
Joined: Nov 24th, 2005
Re: Twist Rates
Reply #32 - Feb 28th, 2015 at 6:44pm
Print Post  
Yes indeedy Boats.  Only five mos. since I pulled the trigger.  5 below this morning and hopefully by mid April we'll be back at it again.  What else do we have to kick around? Grin Grin
  
Back to top
 
IP Logged
 
ssdave
Frequent Elocutionist
*****
Offline



Posts: 2134
Location: Eastern Oregon
Joined: Apr 16th, 2004
Re: Twist Rates
Reply #33 - Feb 28th, 2015 at 8:45pm
Print Post  
As OldWin said, DT did a disservice by preaching the small calbiers as the end all to replace the .45-90.  He ended up going to .45-90 himself eventually.

I myself own and shoot two .45-90's.  Given everything else equal, I'll shoot them in preference to the .38's, of which I also own two.  The 38's offer considerably less recoil.  That's their advantage.  However, to take advantage of that in long range shooting,must have a fast twist to shoot longer bullets to the same ballistics as the .45-90.  What you give up in going to a 38 is the ability to spot hits or misses easily to call the shot.  I think that's why the 38's don't show up in the top as much as the 45's.  People try them, find they are hard to spot, and go back to .45's.

The problem when we have this discussion is we always mix up 3 things, and each camp argues their version of one of the 3, so everybody is arguing apples to oranges to bananas.  If you separate the 3 issues, they are:

1)  Long range shooting of 38's needs longer bullets and faster twists.  schuetzen doesn't.  Silhouette is in between the two.  When we compare schuetzen to silhouette to long range, we end up with meaningless comparisons.  Especially when one guy is arguing his 180 to 220 grain bullet, and the other is using a 365 grain.

2)  .45's are superior in long range to .38's with the same ballistic coefficient not because of ballistics (which are identical) but because of spotting difficulty.  That is a substantial disadvantage to the 38 shooter.
 
3)  Faster twists are ballistically less desirable because of bullet instability.  I don't know on this one, but seems logical.  The question becomes are they accurate enough for the purpose, and are the other advantages enough to outweigh any accuracy deterioration if it exists?

The answer to the question of twist really is:  match the twist to the range and bullet length you wish to use.  The longer the range and the longer the bullet, the faster the twist must be.

dav
  
Back to top
 
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12284
Location: Why, out West of course
Joined: May 29th, 2006
Re: Twist Rates
Reply #34 - Feb 28th, 2015 at 9:47pm
Print Post  
Dave, what do you mean "spotting difficulty"?  Finding the bullet hole on the paper?  Little confused here.

   Joe.
  

A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
boats
Frequent Elocutionist
*****
Offline



Posts: 7727
Location: Virginia
Joined: Apr 23rd, 2004
Re: Twist Rates
Reply #35 - Feb 28th, 2015 at 10:12pm
Print Post  
Joe

Paper if the range has pits with pulled and marked targets is not a problem. Problem is so many of the long range matches are gong on undeveloped ranges. Very hard to see the dirt splash from 38 bullets even with good spotting scopes.

Our Club has a back berm at about 600. Main line is at 500, the ram rails. My 38/55 indicates bullet strikes OK at 500 if they land in the dirt near the rams.    Back berm that has some vegetation imposable to see strikes off of our steel buffalo (always shot offhand)  45 shooters get enough bullet splash to spot even on poor berms at 600


Boats
  
Back to top
 
IP Logged
 
westerner
Frequent Elocutionist
*****
Offline


deleted posts and threads
record holder.

Posts: 12284
Location: Why, out West of course
Joined: May 29th, 2006
Re: Twist Rates
Reply #36 - Feb 28th, 2015 at 11:57pm
Print Post  
Okay I understand.

    Joe.
« Last Edit: Mar 1st, 2015 at 12:08am by westerner »  

A blind squirrel runs into a tree every once in a while.
Back to top
 
IP Logged
 
Schuetzenmiester
Frequent Elocutionist
*****
Offline



Posts: 6707
Location: Cool Wet Side of WA
Joined: Apr 27th, 2008
Re: Twist Rates
Reply #37 - Mar 1st, 2015 at 1:49am
Print Post  
I remember one year at Heals on Vancouver Island, a shooter couldn't get on paper at 1,000.  I was watching between  spotting my shooter.  I finally saw a splash on the 200 yard berm.  It was grass like a lawn.  I doubt I would have ever caught it if it hadn't been  a .45  Wink
  

"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
Back to top
 
IP Logged
 
SSShooter
Frequent Elocutionist
*****
Offline



Posts: 2942
Location: Southern NJ
Joined: Aug 1st, 2010
Re: Twist Rates
Reply #38 - Mar 1st, 2015 at 5:33am
Print Post  
boats wrote on Feb 28th, 2015 at 6:01pm:
Aren't you guys glad I stsrted this thread on a cold snowed in weekend ?
Boats

Indeed. Out to shoot a round of sporting clays in a couple of hours. Not too bad out there today. No "wintery mix", the weatherman calls it, until this afternoon.
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
Back to top
GTalk  
IP Logged
 
boats
Frequent Elocutionist
*****
Offline



Posts: 7727
Location: Virginia
Joined: Apr 23rd, 2004
Re: Twist Rates
Reply #39 - Mar 1st, 2015 at 7:11am
Print Post  
Same here, hard to even walk the dog it's so icy.

Been in my shop loading shotgun shells. Count is near 2000 this morning. 4 gauges 20 through 10 regular and spreader Black powder & Smokeless. All on a single stage.  Like to be able to cast but that's outside for me.   

Weather breaks cast a thousand 300 gr 38s 500 32s
  
Back to top
 
IP Logged
 
ClaMar
Full Member
***
Offline



Posts: 141
Location: Texas
Joined: Jul 23rd, 2013
Re: Twist Rates
Reply #40 - Mar 1st, 2015 at 9:30am
Print Post  
Boats,

I do all my loading and casting in a small old single care garage that has been remodelled/insulated.  I bought a cheap stove vent hood, installed it ~27" above the workbench, plumbed it outside, and can cast inside to minimize the variables of wind, etc.  I prefer to cast in the cold, so wait for days when it stays in the 40's for all my casting.  If necessary, an electric heater could heat your shop up to that temperature.

I can even flux, using the high fan speed.  The low speed works fine when casting.

Clarence
  
Back to top
 
IP Logged
 
Schuetzendave
Frequent Elocutionist
*****
Offline


Retired Ex-Shooter

Posts: 4228
Location: St. Albert, Alberta
Joined: Jan 28th, 2005
Re: Twist Rates
Reply #41 - Mar 1st, 2015 at 9:49am
Print Post  
I go outside and cast at minus 10 C.

They cool and drop out of the mold much quicker.

But I have to heat the pot to 862 F. to keep the mold hot enough.

Cast 500 .25, 2700 .32, 1200 .40 and made 400 12 gauge so far.
  
Back to top
 
IP Logged
 
SSShooter
Frequent Elocutionist
*****
Offline



Posts: 2942
Location: Southern NJ
Joined: Aug 1st, 2010
Re: Twist Rates
Reply #42 - Mar 1st, 2015 at 1:00pm
Print Post  
ClaMar wrote on Mar 1st, 2015 at 9:30am:
I bought a cheap stove vent hood, installed it ~27" above the workbench, plumbed it outside, and can cast inside to minimize the variables of wind, etc. I can even flux, using the high fan speed.  The low speed works fine when casting.
Clarence

Pretty much the same here, though I built an exhausted 'casting bench' in the basement. Works great. Have cast 2000+ for the season and will need 500-1000 more, depending on what matches am able to attend. Best laid plans, and all that.

Just finished unloading 100 shotgun shells in the snow/sleet. Only slipped and fell on my butt once in the entire round. Between the last two stations, of course.  Be careful out there.
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
Back to top
GTalk  
IP Logged
 
boats
Frequent Elocutionist
*****
Offline



Posts: 7727
Location: Virginia
Joined: Apr 23rd, 2004
Re: Twist Rates
Reply #43 - Mar 1st, 2015 at 3:14pm
Print Post  
Here is my casting outfit. Rolling bench. Shop is in a half basement under the house. Smell and smoke rise upstairs if I cast inside.  Outside is good except when the weather is wet. Cold is good Wet is not if something drips into the pot it's a dramatic problem

(You need to Login or Register to view media files and links)

Gas ring underneath is for Fish Frying not bullet casting

Boats
  
Back to top
 
IP Logged
 
SSShooter
Frequent Elocutionist
*****
Offline



Posts: 2942
Location: Southern NJ
Joined: Aug 1st, 2010
Re: Twist Rates
Reply #44 - Mar 2nd, 2015 at 7:13am
Print Post  
What weight fish do you shoot? Wink
  

Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
Back to top
GTalk  
IP Logged
 
Page Index Toggle Pages: 1 2 [3] 4 
Send TopicPrint