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Very Hot Topic (More than 25 Replies) Re: 32-40 & Alliant 300MP MIKE-T (Read 40146 times)
joeb33050
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #45 - Apr 2nd, 2011 at 8:48am
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A quick look at my sight records suggests that one turn = .025" = 50 clicks = 12.5" ~ 12.5 minutes will get a sighted-in ss rifle on the paper at 200 yards. So the J. Louis method seems to work.
joe b.
  
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creedmoormatch
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #46 - Apr 2nd, 2011 at 8:58am
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  Hello Frank ;

      What I was indicating to John B. is, that heretofore, I was just looking up the "Bullet Path" in the Lyman Charts; 1)using the known Hoch bullet weight after having weighted then, and; 2) using the muzzle velocity after having Chronographed then, but not knowing the B.C., I was using a "best guess" approach based on the length and nose configuration as seen in Lyman's materials.

      For instance, the Lyman bullet No. 323471 (actually an 8 MM) has a published B.C. of .475 (taken from the Lyman chart), and bullet No. 323470 has a published B.C. of .187.

     Referring to Lyman's chart, and using my chronographed M.V. of 1300 f.p.s. the No. 323471 bullet if "zeroed" at 100 yards will drop to minus 23.68 inches at 200 yards; whereas the No. 323470 bullet if "zeroed" at 100 yards will drop to minus 27.03 inches at 200 yards; for a delta of 3.35 inches.

One-half of the delta equals 1.675 inches which, when added to the shortest drop of 23.68 inches, equals a total bullet drop of 25.355 inches.

    So on the day of the 200 yard match, I would simply add 25 1/4 inches of elevation (1/4 M.O.A. EQUALS 1/2 inch change to P.O.I. @ 200 yards distance) to my scope setting which is zeroed at 100 yards; make a few "sighters" and fine tune to a 200 yard zero for that relay.

   


   Isn't it interesting that the method that I previously outlined above and the old "Rule of Thumb" posted later, are only 1/4 inch apart.  Just goes to prove that the "old timers" at least knew as much about the game as do the educated ballisticians who use charts, graphs and ballistic coefficients, etc., in order to calculate external ballistics.

    Regards,

    Creedmoormatch

  Choose Civility
  
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jonskorepa
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #47 - Apr 26th, 2011 at 9:39pm
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has any one tried 25-20ss,28-30ss with 300mp looking for starting loads tks for any assistance jon 165gr,100gr respectivly.
  
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creedmoormatch
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #48 - Sep 3rd, 2011 at 8:13am
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   Good morning John Lewis

I am quickly approaching a cross road and am outlining a few Winter projects for my CPA 32-40 with a 30" barrel.  I've just revisited all of your information found on the previous five pages and would appreciate hearing your opinion on the following.

I was searching your posted data to learn which .32 case you were shooting.  Is it one of the shorties such a 32 Miller Short or 32 Dell?  Or perhaps, is it the Rocky Mountain so-called "Reduced Capacity" cases?  My chamber is a standard SAMMI 32-40 WCF.  However, with a 30" 32 Cal barrel, I am considering setting it back in the action and re-chambering for a shorter .32 case, which would result in a 28" barrel length.

My local supplier has had difficulties getting Alliant 300-MP which I hope to have in a couple of weeks.  Up to the present, I have relied on IMR-4227 with mixed results, with the Hoch 200 Grain bullet breech seated in the Shuttleworth tapered throat.

I would be very interested in hearing your learned opinion on the advantages, or lack thereof, of re-chambering to a smaller capacity case.

Thanks in advance for any assistance you would care to offer.

Webb
Creedmoormatch
  
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creedmoormatch
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #49 - Sep 3rd, 2011 at 1:22pm
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  Thanks Jerry

And CONGRATULATIONS on your most resent success at Modesto.    Wink

  Webb
  
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creedmoormatch
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #50 - Sep 3rd, 2011 at 1:57pm
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   John, thank you for your input.   

   Would you happen to have an opinion to share on the advantages/disadvantage of shooting the 32-40 from reduced capacity cases such as those being made available by Rocky Mountain?  If so, I would greatly appreciate hearing what that opinion might be, as well.

  Webb
  
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creedmoormatch
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #51 - Sep 3rd, 2011 at 2:30pm
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Quote:
I prefer to breach load plain base lead three-dimensional bullets. The rifles I've had the most success with have not been throated ".
J. Louis


John,  I don't want to take any more of your time on a holiday week-end, but as I spend more time re-reading about your experiences towards reaching 250 @ 200, I've notice your above quoted comment; that being,  you are breech seating ahead of the charged cases in a barrel that has no "free bore" or tapered throat and achieving the best results.   

Of course, you are able to accomplish that due to the fact that your Hoch bullets have a taper to them.  Perhaps my arrangement of a tapered bullet placed into a tapered throat has some drawbacks which I have not considered before.  Food for thought.

  Webb
  
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PLAMBERT
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #52 - Sep 8th, 2011 at 9:43pm
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gENERAL QUESTION;

I AMSEEKING LOADS FOR 32MILLER SHORT, 210 GR BULLET (BARNETT), AND 300 MP, IN 1-10 SMITH GAIN TWIST BARREL. 

DOES ANYONE HAVE A GOOD LOAD?

i HAVE BEEN SEEKING ACCURACY AT SUBSONIC VELOCITIES USING AA #7 AND HAVE NOTHING!  I DO HAVE A MATCH ON SATURDAY!!  ANY INPUT WOULD HELP

PAUL LAMBERT

  
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digitall423
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #53 - Sep 9th, 2011 at 8:00am
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It is my understanding that 300 MP works well in larger cases such as .32-40. The shorter cases respond well to other powders such as 4227 or the one mentioned in this thread; AA4100. I shoot an 11 twist Smith barrel with a 228 gn. Paul Jones bullet. I have had some luck with both 4227 and AA9 but the 4100 is showing a lot of promise. 

Hopefully someone has done some work with small volume cases and 300MP and can help you out.

Bill
  
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40_Rod
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #54 - Sep 9th, 2011 at 8:54am
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Paul
I am having good luck with WC 820 a surplus powder that shoots measure for measure with H 108. I have been giving a lot of thought to what I will use when I finally go through all my WC 820. Lil gun is what I have decided to try over the winter to see if I can find a good replacement. It seems to work well for others in small cases. As John Lewis mentioned all the .357 based cases are a little finicky and as little as one click on my Harrel measure (about .03 grain) can make a big difference in group size. This means slow going in load development. Sorry I don't have any easy answers for you.
Here is what I am using in my 32-30 IMP chambered to a RKS barrel. I am using a Mos 218 gr spitzer cast 18:1 One barrel uses 11.2 Grs WC820 and the other gun uses 10.8 grs. I use Fed 205 M primers and the bullet is seated .065" ahead of the case.

40 Rod
  
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John Boy
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #55 - Sep 9th, 2011 at 10:34am
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Paul, here is a loading data link for the 32 Miller Short ...
(You need to Login or Register to view media files and links)

Here is a 32 Miller target shot by Jim Burton using 300-MP but no loading data ... (You need to Login or Register to view media files and links)  Might want to send him a PM or email 

As for a loading data using 300-MP, it being a new powder, there is no published data for it other than in pistols.  J Lewis has had the best success with the powder, but not in a 32 Miller.

I am presently try to get the correct velocity in an 8.15x46R, but have not found the magic number yet using a 180 stop ring bullet @ 200yds.  Accordingly can't be of help with the Miller using a 200gr bullet
  
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frnkeore
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Re: 32-40 & Alliant 300MP MIKE-T
Reply #56 - Sep 9th, 2011 at 1:12pm
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40_Rod, whats your groove diameter on your 32/30?

Frank
  
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