Retumbo and 243 Ackley Imp.


Well-Known Member
Dec 3, 2002
Bridgeville, PA
Any one using Retumbo in the 243 Ackley Imp. 40.

243 Ackley Imp. (.271) Chamber Reamer from Dave Manson

Farley action and rings.
Krieger 8" twist 28.5" HV

Jewell Trigger.

Leupold 18x40 LR by Premier Reticles
Dave Bruno did the Chambering and Fitting.

I did the stock work and the Sikken Viper Race Yellow Paint.

Shehane McMillan ST-1000 stock from Bill Shehane (D&B Supply)
Rifle weight 17.5 lbs.

[ 03-30-2003: Message edited by: mbianchini ]


Well-Known Member
Dec 8, 2002
Nifty matchin rest!

Hmmm, I can't immagine retumbo working in a 243AI. Benchmark or Varget, Yea.


Varget works great in my .243 AI with 70 gr NBTs(3750 fps), but is too fast for the heavies... I use N560 behind 100 grainers for 3200 fps from a 24" tube.. Its good powder for in this cartridge for the heavier bullets...

22 Mag

Mar 22, 2003
La Crosse, WI
I have not used Retumbo in my .243 AI, but I have used IMR 7828 with mixed results. The powder gets my 105's or 107's up to speed, about 3300 fps, but the best groups for my gun were not at warp speed, but just under. I have a Win M70 in .243 AI with a 28" 1-8 twist Pac-Nor tube on the standard stock for the Win HV. I hope this helps

22 Mag

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