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Type: Posts; User: john.k

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  1. One of the complaints I hear about Trailboss is...

    One of the complaints I hear about Trailboss is the rate of pressure rise is a lot faster than black powder...........the contention is this rapid rise equates to "gunbusting" ....which I have never...
  2. Not really informative,because he lumps all...

    Not really informative,because he lumps all "smokeless" into one (IMR4759),and as we know,smokeless runs the gamut of rates from Norma R1,faster than Bullseye,all the way to cannon powders,which wont...
  3. When you get sonic cracks ,vel is likley well...

    When you get sonic cracks ,vel is likley well over 1150f/s,usually somewhere around 1250f/s.Its good when the hiss changes to a crack,but the noise does nothing for accuracy,the trans sonic zone...
  4. Yes,FFFg will produce a bit more velocity ,and a...

    Yes,FFFg will produce a bit more velocity ,and a bit more fouling than FFg,generally.....In a C&B revolver ,charge is limited by the bullet ,you can get a bit more in the cylinder with...
  5. Im not quite correct...the first blackpowder...

    Im not quite correct...the first blackpowder rounds for the new 303 generated 19 tons per sq inch,but to achieve that they crammed 71 grains of powder in a 303 case,loose powder ,doubtfull if youd...
  6. Why is it hard to find pressure details?.....The...

    Why is it hard to find pressure details?.....The Lyman BlackPowder Handbook is full of them.....in any case ,Its virtually impossible to exceed 10kpsi with BP ,so if you work on that you cant go far...
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