sabot melting


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Harve Curry
October 18, 2008, 11:31 AM
Anyone ever had the sabot melt into distorted strip from a 50cal muzzle loader? Using 80gr of 777 powder and a no. 11 cap.
Gotta go shoot some more, sightin because elk season is now.

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Harve Curry
October 18, 2008, 03:24 PM
I changed to Pyrodex using same 80gr volume as the 777. Shot a decent group at 100 yards and sabot looks normal. So I quit the 777.

scrat
October 18, 2008, 04:57 PM
when using 777 you have to reduce your loads by 10% somethimes more. 777 does burn hotter

arcticap
October 19, 2008, 03:48 AM
MMP has a "ballistic bridge sub-base" that's placed under the sabot as an "Additional Gas Seal, Cushion/protection of Sabot Base, Improved Accuracy!"
I've heard of the Savage smokeless guns needing them with the higher pressure powders.
Maybe the sabot distortion is caused by a combination of pressure and heat?

The ballistic bridge sub-base is listed at the bottom of the product page.

http://www.mmpsabots.com/

Shultzhaus
October 19, 2008, 07:39 AM
CVA Buckhorn with standard Fiber optical sights (I do not own a telescope sight) I use 70 Gr 777, and one of those new Hornady easy load 250Gr. Sabots. Put 4 shots in a 3" circle at 50 yd. next, tried the 100 yd target. Aimed high, thinking I would have some drop off, and was off the paper (8 x 11 sheets- I print my own) second shot a little lower - still just nipped top of paper. 3rd shot - in the 6" red circle - 4th shot in the yellow 3" center, still an inch high of center. Don't know what else to add. Never had a sabot melt in 2 years, using 777. Every rifle has its own "sweet load". keep trying

moooose102
October 19, 2008, 09:44 AM
heck, i have shot plastic saboted bullets over 130 grains (by volume) of 777 several times. found the sabots on the way to look at the target. they all looked normal. i dont think triple 7 is your problem. now, something i have tried is a very light coating of bore butter on the outside of the sabot when you load it. makes it slide in slicker than gorrilla snot.

Mark whiz
October 19, 2008, 07:40 PM
I have to agree with moose - I've sent hundreds of sabots downrange with 777, Pyro, CleanShot, Clearshot, etc and NEVER seen a saot look as you describe. But most all I have shot where the better MMP sabots - which could make a difference though.

My standard load now is 80gr of 777 (2fg) with a 300gr bullet, and have shot up to 100gr of 3fg 777 with 400gr sabots with great accuracy and zero issues with the sabots.

alsaqr
October 20, 2008, 09:47 AM
It the gun gets very hot from firing the sabot can melt or soften in the barrel if the gun is not quickly fired. Usually this happens in hot weather.

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