Hodgdon HP-38

The Rossi Model R92, a lightweight carbine for Cowboy Action, hunting, or plinking! Includes Rossi manufactured Interarms, Navy Arms, and Puma trade names.
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Stretchabusa
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Hodgdon HP-38

Post by Stretchabusa »

Hi, as per title, I picked a couple of tubs of this up at a decent price and I was wondering if anyone has used it in the following manner, I have bought it to load .38 special in .357 Mag cases to fire out of my Lever action, bullet weight 158gn. (indoors)

Does any one have any load data for an accurate load using the above set up.

Best regards Stretch.

PS I just picked up my Rossi M92 Puma a couple of days ago and it is shooting high and to the right out of the box, I've adjusted the elevation to the lowest setting and a Buddy of mine is bringing in to work a Brass punch to sort out the + to the right shooting and I will try it out again this Friday night.

PSS Sorry my 1st post is a question, I will take some piccy's and post them up by way of an introduction.

God Bless America, UK and all our Allies.
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Re: Hodgdon HP-38

Post by akuser47 »

5.5 grains with an xtp 158 grain, starline .357 mag case, cci primer, at 50 yards does well for slower load.
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Re: Hodgdon HP-38

Post by Ranch Dog »

Stretchabusa wrote:Hi, as per title, I picked a couple of tubs of this up at a decent price and I was wondering if anyone has used it in the following manner, I have bought it to load .38 special in .357 Mag cases to fire out of my Lever action, bullet weight 158gn. (indoors)

Does any one have any load data for an accurate load using the above set up.
Sure, I can. I ran it through QuickLoad using the R92 chamber, 357 Mag brass, the Lee 358-158-RF (being you did not mention a specific bullet, at an overall length of 1.590", and loaded to 17,000 PSI. 5.0-grains should produce the pressure at 1155 FPS. You need to be extremely careful with the charge as it only fills 37% of the case so your chances of a double charge increase dramatically. A double charge, 10-grains will produce over 64.0K PSI and I would expect damage to the firearm to occur.
Stretchabusa wrote:God Bless America, UK and all our Allies.
Amen to that! Welcome to the forum Stretch!
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Re: Hodgdon HP-38

Post by akuser47 »

welcome aboard as well
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Re: Hodgdon HP-38

Post by Stretchabusa »

Hi and thanks for the advice, I initially loaded up with 5.7 graines because that's what it said on the tub for 38 Spec. and they were all over the place but that might be me being new to rifles.

I did mention the bullet weight in the 1st post as being 158 grain, it's a lead truncated cone.

Best regards Stretch. :)
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Re: Hodgdon HP-38

Post by donhuff »

What RD meant was, for Quickload to be more accurate, he needs to know the SPECIFIC bullet and OAL that you are using. That tells him the distance from the crimp groove to the base of the bullet, and so , how far it goes into the case. This affects the pressure.
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Re: Hodgdon HP-38

Post by Archer »

To elaborate a bit on what donhuff said:

The program (Quickload) uses a combination of factors to determine the pressure curve of the loaded ammunition when fired. The internal case volume is one of those factors and knowing the exact bullet geometry helps refine that volume rather than estimate it.
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