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Double Rifles, Single Shots & Combinations >> Paradox and Bore Guns

Spud303
.224 member


Reged: 25/05/11
Posts: 48
Loc: ACT, Australia
Husqvarna Mod 4 RB 20 ga
      26/06/11 06:19 PM

Hi,
Just starting to reload for a Husqvarna Mod 4 Rolling Block chambered for the 40 mm 20 ga brass case. The rifle appeared to be in mint condition when I got hold of it. Heavy 32" oct barrel, shotgun butt and, twin extractors, bore .622", groove .662, twist approx 1 in 72", 3 leaf sight marked 60, 120 & 180 m.

After trimming some CBC brass 20 ga cases to match the chamber a 16 ga ball (.662") was a tight slip fit so I loaded some up with 2 3/4 drams FFg (approx 75 gr)and a 1/4" greased felt wad. These grouped nicely but were approx 8" high at 50 m. Made up a conical slug by boring out a .662 round ball mould with a single shallow lube groove (approx 520 gr with 40-1 alloy). Using the same load these also shot well but were about 10" high at 50 m. At 100 m both projectiles are still hitting centre but about 6-8" high using the 60 m leaf and a 6 o'clock hold. The 120 m leaf puts them way over the target

So I'm after any suggestions on what to try next to get these projectiles hitting lower. Can I increase the powder charge - not sure about the safe limits with these Husky RB actions, or should I reduce the height of the 60 m sight. The foresight is already very low.

This bore gun shows real potential and is very pleasant to shoot.

Spud




Edited by CptCurl (27/06/11 01:33 AM)

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Entire topic
Subject Posted by Posted on
* Husqvarna Mod 4 RB 20 ga Spud303 26/06/11 06:19 PM
. * * Re: Husqvarna Mod 4 RB 20 ga rigbymauser   26/06/11 06:53 PM
. * * Re: Husqvarna Mod 4 RB 20 ga rigbymauser   26/06/11 07:20 PM
. * * Re: Husqvarna Mod 4 RB 20 ga rglenz   26/06/11 10:18 PM
. * * Re: Husqvarna Mod 4 RB 20 ga lancaster   27/06/11 03:10 AM
. * * Re: Husqvarna Mod 4 RB 20 ga Spud303   27/06/11 07:36 PM
. * * Re: Husqvarna Mod 4 RB 20 ga DarylS   28/06/11 02:08 AM
. * * Re: Husqvarna Mod 4 RB 20 ga lancaster   28/06/11 03:19 AM
. * * Re: Husqvarna Mod 4 RB 20 ga tinkerModerator   28/06/11 03:34 AM
. * * Re: Husqvarna Mod 4 RB 20 ga lancaster   28/06/11 05:10 AM
. * * Re: Husqvarna Mod 4 RB 20 ga Spud303   28/06/11 04:50 PM
. * * Re: Husqvarna Mod 4 RB 20 ga lancaster   29/06/11 01:46 AM
. * * Re: Husqvarna Mod 4 RB 20 ga BillfromOregon   31/10/14 10:13 AM
. * * Re: Husqvarna Mod 4 RB 20 ga tinkerModerator   31/10/14 10:42 AM
. * * Re: Husqvarna Mod 4 RB 20 ga Iowa_303s   31/10/14 11:23 AM
. * * Re: Husqvarna Mod 4 RB 20 ga Ash   01/11/14 12:16 AM
. * * Re: Husqvarna Mod 4 RB 20 ga Iowa_303s   01/11/14 02:27 AM
. * * Re: Husqvarna Mod 4 RB 20 ga 4al2   09/11/14 03:18 PM
. * * Re: Husqvarna Mod 4 RB 20 ga bigskybound   18/06/15 01:06 AM
. * * Re: Husqvarna Mod 4 RB 20 ga DarylS   27/06/11 02:10 AM
. * * Re: Husqvarna Mod 4 RB 20 ga brandoninaz   09/10/15 12:03 PM
. * * Re: Husqvarna Mod 4 RB 20 ga DarylS   10/10/15 03:22 AM
. * * Re: Husqvarna Mod 4 RB 20 ga brandoninaz   10/10/15 09:43 AM

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