45-70 Grouse Gun

M

mehavey

New member
On a wild hare, I picked up a mold for Lyman's "Collar Button" bullet that has
about a hundred-year history for gallery loads.
15gt254.jpg

After a little reading I decided on the fastest powder I could use (RedDot) to
quickly bump up the relatively light projectile and still not lose too much
velocity traveling down 18½" barrel in my Guide Gun.

I ran it this morning in 15-20mph gusting winds at what I view as practical
ranges of both 25 and 50 yards. I left the scope zero alone at my normal
heavy 405 LFN load setting.

45-70 as-Cast:0.460"/sized:0.459"/DGLube h=104 1/16" foam*gas checkNOT@powder
Lyman 457130 Button(30:1)147gr /RedDot/6.0/Starline/FedLR/OAL=2.318"
QL predicts 4,478psi/890fps(friction-ON) Crimp(½-turn)MidFrwdBand
* picnic plate

rw0umb.jpg


Barrel was spotless afterward.
Good enough for any small game at small game ranges (w/o pre-cooking it on impact) ;)

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You say grouse - might want to check the legalities of shooting grouse with a rifle over a shotgun - certain places will throw you in jail for that.......;)
 
Update...

After a little reading and testing both primers & powder position sensitivity (which is Baaaaaddd -- from 300fps to 1,100fps / unburned powder all over the place):(, I decided to follow an older protocol to move the thin (near weightless) foam disk off the bullet base and down to a position 1/5" (.200") above the powder.

For that amount of powder, this creates a very reliable sloping powder position/surface akin to that in a 45ACP case. The rifle primer immediately blows it out of the way even before ignition really gets going and it's off to the races.

50 Yard results today:
Marlin `95GuideGun

710ol1.jpg


Velocity was a very consistent 1,086fps ± 08 for all 5 rounds.
Barrel was spotless/very little powder residual even before cleaning.

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