58 caliber hawken
recently purchase 58 caliber hawken no manuel or paperwork.Pretty sure it is an investarms(has I stamped on barrel says made in italy)Don`t know rate of twist round ball or conical or both.I figure powder charge start 80 grs and work up to 120. Any info out there? Could mini mold be used? thanks Clembo
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Most Hawken rifles are designed for round ball and for conicals.
Why not start of simple, with the patched round ball.
I would start at 70 grains and then try 80, then 90.
A bigger ball gets more foot-pounds with the same powder charge than a smaller round ball.
You wouldn't need 120 grains, and 120 grains would really give your shoulder a thumping.
That big round ball with 80 grains of powder would be a very potent hunting load.0 -
quote:Originally posted by clembo
recently purchase 58 caliber hawken no manuel or paperwork.Pretty sure it is an investarms(has I stamped on barrel says made in italy)Don`t know rate of twist round ball or conical or both.I figure powder charge start 80 grs and work up to 120. Any info out there? Could mini mold be used? thanks Clembo
For the rate of twist drop a small keychain flashlight (the kind that takes a single AAA battery) down the unloaded barrel. Focus on one groove and follow it as far as you can see to the breech. This will give you a close approximation of the twist rate. For example, if you had a 32" barrel and the groove makes almost a full turn from muzzle to breech than it would be about a 1-36" twist. If it made half a turn the twist would likely be about 1-66".
As to your powder charge it depends it you want accuracy or power. The max powder charge may not yield the best accuracy. A general rule of thumb for muzzle loading powder charges is one grain of powder for each .01 of caliber (40 caliber/40 grains, 45 caliber/45 grains, etc.).
John0
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