Go Back   The Hunter's Life > GUNS & AMMO > RELOADING
Thread Tools Display Modes
Prev Previous Post   Next Post Next

First Workup For 16x10.15x61R Jarmann Cape Gun
Old 03-10-2015, 08:27 PM
gitano's Avatar
gitano gitano is offline
Join Date: Oct 2004
Location: Wasilla, Alaska
Age: 70
Posts: 19,639
gitano is on a distinguished road
Default First Workup For 16x10.15x61R Jarmann Cape Gun

One of the reasons I was fairly quick to jump on this firearm is that the 10.15x61R Jarmann cartridge is 1) easy to form from .348 Win cases, and, (another reason why I let it get in my head that it was a Husqvarna) 2) a Swedish military cartridge.

So I have fireformed a case and stuck a 200-grain, (originally .425"), jacketed bullet 'squoze' down to 0.410" in the case to make a 'dummy' cartridge.

I slugged the bore, and it has 7 lands and 7 grooves, which makes measuring the bore dimension, (land-to-land), or the groove dimension, (groove-to-groove), tough. Land-to-groove dimension is 0.406". As I thought about it, that dimension should be about right for a jacketed bullet's diameter. Add a thousandth or two for a cast lead bullet.

The case has a measured capacity of 87.0 grains of water. You will all be surprised to hear that I paper-whipped those numbers in QuickLOAD (QL). Here are the result of that paper-whipping.

200 grain bullet
26" barrel
Max allowed pressure - 25,000 PSI (Fairly conservative, but y'all know I don't like to beat up old guns. That said, this is not that old a gun. I think between 1915 and 1925. Non-damascus shotgun barrel.)
60.2 grains of Accurate 2495 yields a muzzle velocity of 2450 f/s which in turn produces 2675 ft-lbs of muzzle energy. Not bad.

With the sights 0.75" above the mid-line of the bore, sighted in at 125 yd, the rifle is 1" high at 75 yd and 6" low at 200 yd retaining 1280 ft-lbs of energy. Not bad for a bullet with a G1 BC of 0.205.

I'm kinda liking that load - 200-grain bullet, 2450 f/s MV. Easy on the gun. Easy on my shoulder. .40 caliber hole. Moose-lethal out to 200 yd. Tough to beat for what it is.

I have to get a bullet resizing die in about 0.406". I might be willing to shoot 0.410" CAST bullets with a gas check from this rifle. Gotta come up with some reloading dies too. I hate to part with $135+S&H for factory-new dies, but may have to. I don't know if I could find a reamer for cutting resizing die.

Gotta come up with a bullet I am OK shooting through this bore before I shoot it, but it shouldn't take me too long.

Then you will know the truth, and the truth will set you free. John 8:32

"We make men without chests and expect of them virtue and enterprise. We laugh at honor and are shocked to find traitors in our midst. We castrate and bid the geldings be fruitful." ~ C.S. Lewis.

Do not confuse technical skill for wisdom and do not confuse strength for skill. Paul Skvorc
Reply With Quote

.348 win brass, 10.15x61r, custom mold, jarmann

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Belgian Cape Gun gitano FIREARMS & OPTICS 9 03-23-2015 01:39 AM
Cape gun drinksgin (deceased) FIREARMS & OPTICS 0 10-27-2014 11:32 AM
500 S&W Load Workup gitano RELOADING 108 09-25-2011 03:03 PM
Drilling: G.F. Stormer: Initial Workup gitano FIREARMS & OPTICS 115 11-30-2010 03:28 PM
The 16 gauge French Cape Gun gitano RELOADING 19 10-15-2010 12:43 AM

All times are GMT -5. The time now is 07:58 PM.

vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.