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Old November 14, 2012, 09:38 AM   #8
Senior Member
Join Date: May 27, 2007
Posts: 5,261
My rifle looks to be microgrooved. I have read that some 44 ammo can tumble out of the barrel.
I had a poor experience with lead and microgroove barrels. Lead bullets did strip if I pushed them too fast. I tried some 290 lead and that was a scattergun experience.

I had the barrel changed to a Ballard barrel, it handles lead better.

I am of the opinion that Marlin needs thicker lands and deeper grooves and a faster twist in their 44 Mag barrels. But when you talk to them they say they are following SAAMI specs.

Stupid is as stupid does.

I also got blown groups in my microgroove Marlin 336 when I pushed lead bullets above 1600 fps.
If I'm not shooting, I'm reloading.
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