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  • john.k's Avatar
    04-23-2018, 11:29 PM
    john.k replied to a thread eddystone value in Military Rifles
    No doubt you are aware that you should remove the metal from wood,and check the front of the reciever ring all round for fine cracks,some not so fine.You can weld up cracked rings,it was my job once......but better if not cracked.
    7 replies | 220 view(s)
  • john.k's Avatar
    04-23-2018, 08:54 AM
    john.k replied to a thread eddystone value in Military Rifles
    Worn rifling always starts at the throat,an easy way to check is to drop a bullet into the chamber,push in firmly,measure with a rod,the measured length should place the bullet still in the case.If 2" longer, the throat is shot out.A 25/06 shooting...
    7 replies | 220 view(s)
  • john.k's Avatar
    04-13-2018, 10:01 PM
    Unbelievable.You would need a tight crimp on that one.
    16 replies | 580 view(s)
  • john.k's Avatar
    04-13-2018, 09:38 PM
    Using pistol (short) primers allows for unwanted things to happen,its quite likely your primer blows into a convex form,or even redraws the cup,before pressure moves the primer back against the boltface ,flattening it .Overworking the thin metal,and...
    21 replies | 575 view(s)
  • john.k's Avatar
    04-12-2018, 12:07 AM
    Hello,BIS...I should mention that my 222r has a small notch cut in the top of the chamber which admits the blade of a small screwdriver...my take on the rimless extractor....While I admire the quality of the little guns,their main fault is that they...
    34 replies | 7957 view(s)
  • john.k's Avatar
    04-11-2018, 12:44 AM
    What you want to do has a large bearing.....for smokeless powder and higher velocities,I think plain Mauser 4 wide groove,narrow land is best....For blackpowder ,fouling is the issue,and how its to be managed.....Another set of conditions applies...
    5 replies | 290 view(s)
  • john.k's Avatar
    04-10-2018, 08:46 PM
    john.k replied to a thread Shoot out squib in Cast Boolits
    I had a squib in a 44,the case seemed to have white wax in it.....I assume bullet lube buildup in the seating die had fallen into the case.....anyway,the powder didnt fire,just like it was oilsoaked......The cast bullet was nearly at the muzzle,and...
    27 replies | 966 view(s)
  • john.k's Avatar
    04-10-2018, 08:25 PM
    Those who go on about small diameter tenon threads and strength should take a 1895 Marlin in 45/70 apart....the thin.ness of the chamber and reciever ring is scary...to me at least...Cadet Martinis are a dime a dozen as it were nowdays,and a heap...
    34 replies | 7957 view(s)
  • john.k's Avatar
    04-10-2018, 01:11 AM
    Two systems that did work well in the 19th century were the tapered oval bore,and Metfords segmental rifling.I think Henrys rifling worked so well in the trials because the narrow lands cut paper patches,whereas the other systems tested...
    5 replies | 290 view(s)
  • john.k's Avatar
    04-10-2018, 12:32 AM
    i gather "Star" put the thread and a nut on the sizing die,completely bypassing this problem.
    20 replies | 702 view(s)
  • john.k's Avatar
    04-10-2018, 12:28 AM
    The thread is in a very restricted spot,machining wise......helicoil and /or tap not practicable.....unless you make your own ...The only hand method I can see is to insert a custom made piloted reamer into the thread,followed by a piloted...
    20 replies | 702 view(s)
  • john.k's Avatar
    04-07-2018, 06:41 PM
    I have lots of soluble machine oil of the dark sulfurized type with phenol smell to it......anyone used this for blackpowder. guns?
    6 replies | 381 view(s)
  • john.k's Avatar
    04-04-2018, 08:50 PM
    before doing anything with an early Mauser ,consider this.......for ease of production,the chamber is cut shorter than the case,so the extractor cut of the case is unsupported....If you have a blowout from the primer pocket,gas will inflate the ring...
    29 replies | 776 view(s)
  • john.k's Avatar
    04-04-2018, 09:26 AM
    You answer your own question,then ask it again.The dimensions come from the barrel taken out...this is the only reliable indicator,unless you have prior experience with the particular type of action.As to the LH lug making contact,this is to protect...
    29 replies | 776 view(s)
  • john.k's Avatar
    04-04-2018, 09:14 AM
    All seems very strange.....but unless you know your guns groove dia/bore dia,you have nowhere to start.
    13 replies | 826 view(s)
  • john.k's Avatar
    04-04-2018, 09:00 AM
    Flattened pistol primers are not an indication of the high pressure that flattened rifle primers.
    21 replies | 631 view(s)
  • john.k's Avatar
    04-04-2018, 08:53 AM
    Funny about that..ADI,who make the stuff give many loads,and some of their loads have a (C )after them....So they say no compressed loads,then specify several compressed loads in their tables.Not trying to make any particular point here.
    11 replies | 317 view(s)
  • john.k's Avatar
    04-04-2018, 05:58 AM
    You would expect a collet to be made of hard springy steel,not a Lee collet......its very soft,and cuts easily with a file.
    10 replies | 294 view(s)
  • john.k's Avatar
    04-03-2018, 07:39 PM
    I was given one ,apparently new,because "its impossible to get the nut in".....seems the nut was crossthreaded first use......anyway,I cleaned the threads up,still near impossible......so I made a small guide to fit into the pushrod.....and fits...
    20 replies | 702 view(s)
  • john.k's Avatar
    04-03-2018, 07:12 PM
    A while back I did some work on a couple of military Ross rifles....the bores,chambers and barrel ODs were concentric within .0001 "...the chamber reinforce was concentric with the bore to the extent that I was able to skim the external surface so...
    46 replies | 2001 view(s)
  • john.k's Avatar
    04-03-2018, 06:39 PM
    john.k replied to a thread Lee mold rebuild in Casting Equipment
    If you clean,or sand a sprue plate to bare metal,it will blue itself the first time its used.I must say,I ve never heard of anyone losing any sleep over Lee molds before......
    9 replies | 283 view(s)
  • john.k's Avatar
    04-02-2018, 05:18 AM
    B.A.W....do you know if a NSW Henry has the same barrel thread as a Martini-Henry?I was thinking of sleeving the chamber,as I dont like the exposed case base with CBC cases.,but it would be better to sleeve a spare barrel,rather than the...
    19 replies | 875 view(s)
  • john.k's Avatar
    04-01-2018, 08:39 PM
    When I was a kid,I bought a M17 E solid with cosmoline for $12.....all the money I had.I dug it out with ice cream sticks.....and got the sticky waxy goo everywhere.Any time the gun was out in the sun,the stock would sweat liquid oil,and be so...
    43 replies | 1796 view(s)
  • john.k's Avatar
    04-01-2018, 08:19 PM
    A basic chamber reamer will finish the throat to standard specs.Your "short chambered" barrel will have such a chamber.......Separate chamber and throat reamers is custom gunsmithing not normally expected on a surplus Spanish 93.
    29 replies | 776 view(s)
  • john.k's Avatar
    04-01-2018, 08:10 PM
    You can buy metal filled epoxies,incl CI filled ,but they tend to be expensive.One that I have used to fill up internal pitting cavitation in cylinder blocks is Devcon......good,but expensive.
    16 replies | 490 view(s)
  • john.k's Avatar
    03-27-2018, 07:59 PM
    You should always fit a tight plug into the reciever of any bolt gun,before unscrewing.This will eliminate any nasty shock,when you find the bolt wont fit back in.......
    7 replies | 434 view(s)
  • john.k's Avatar
    03-27-2018, 08:50 AM
    My suggestion is that the cylinder failed firstly into the arbor hole ,thereby denting the case inward,and splitting the cylinder along the plane of weakness that caused the initial failure.There is a principle of crack propagagtion,whereby force...
    101 replies | 3602 view(s)
  • john.k's Avatar
    03-26-2018, 09:41 AM
    In a 32/20,which doesnt have a fancy name,4 gns of TB and a 120 gn bullet is a good mild load at about 1200f/sec.
    5 replies | 311 view(s)
  • john.k's Avatar
    03-26-2018, 09:37 AM
    A case full is about 8.5 grains....thats what I use for the lee 240 thats actually 253gr. Seems to shoot to point of aim at 100,so i suspect velocity is around 1200f/sec.With a lighter bullet of around 215gn,I also use 8.5gr,cause I leave the...
    2 replies | 174 view(s)
  • john.k's Avatar
    03-26-2018, 09:23 AM
    It seems to me that the longer die will resize about 1/4" of the Krag neck.As its a Ackley case,the neck is going to be pretty short anyway,so this may be enough for your purposes.....However ,the fingers of the collet may be bent inwards due to...
    9 replies | 265 view(s)
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About john.k

Basic Information

About john.k
Biography:
retired mechanic/engineer.
Location:
brisbane ,qld,australia
Interests:
shooting,machinery,bikes
Occupation:
retired

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check