Spencer Shooting Contest and Burnside Spencer Conversion to a Sporting Rifle

[Big Goose]

Hatfield, PvtGreg,
nice shooting, hope to get my 56-50 out for our annual snowshoe shooting match first weekend in Feb. I'll try to post results... it'll be tough to match your groups I'm thinking.
Blair, great write-up. Very interesting  and neat cartridge conversion development. Two Flints thanks for posting it
I am in Herberts camp for my next Spencer. Gathering parts and agree  NM action would be the ideal platform to start with.  Also plan for 56-46 utilizing 32 ga. Brass. Thinking .458 dia. Bore and 1-24 twist . Plan for bullets from457192 ideal mold. Bullets weigh close to 370 grns out of 30/1 alloy. Hoping to get 45 grns 2f under it and still have workable overall cartridge lenth.
My son killed a big bison cow in October with this bullet in his 45-60 Uberti 76 Win. 150+ yards broke both shoulders, bullet recovered in hide on far side.dropped in her tracks. His load was 55 grains of olde eynsford 2f. Figure 45 grs. Would make a durn nice sporting rifle load.
Hatfield sorry to divert this thread, maybe need to start a separate one for this topic....
hope to get to shooting my Spencers soon,
Big Goose

[Ibgreen]

Here is a 5 shot group with the NM rifle today.  Bench rest at 50 yards.  I really need to add the spring wedge as my trigger pull exceeds 20 lbs. 

Modified lee mold .515 380gr
Goex FFF 31gr. By weight
Starline brass
CCI LPP
1.6" overall length