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9/22/2017 12:11:25 AM
Posted: 7/25/2005 6:47:03 PM EDT
I have been shooting a TC Encore .50 for over a year now. 100 gr of anything behind a 295 gr Powerbelt will group 9 of 10 shots into a pop can at 100M. If I go to 150 gr of propelant I group between 12 to 18 inches at 100M. What gives? Has any one else had this experience?
Link Posted: 7/25/2005 9:40:56 PM EDT
I don't own a TC Encore, but my grandfather does, and he told me that he only loads 100 grains (2 Triple 7 pellets) into his. If he puts 3 pellets in (150gr.) then accuracy is not as good. Each gun has it's own 'sweet spot' with certain projectiles. I'm thinking you experience is normal.
Link Posted: 7/26/2005 1:39:23 PM EDT
+1.
It could be your gun.

But, how's your follow through?

150grs of pyrodex'll lift the muzzle pretty good.
Link Posted: 7/29/2005 5:48:55 AM EDT

Originally Posted By nyeoj:
I have been shooting a TC Encore .50 for over a year now. 100 gr of anything behind a 295 gr Powerbelt will group 9 of 10 shots into a pop can at 100M. If I go to 150 gr of propelant I group between 12 to 18 inches at 100M. What gives? Has any one else had this experience?



I dont know squat about INLINES , so here's my opinion it sounds like the projectile is stripping the lands and grooves . 150 gr in a .50 w/ a bullet that is 295gr sounds like a hell of a load !
Link Posted: 7/29/2005 7:11:57 PM EDT
I never thought of that. I will have to try some different projectiles and see if I can get something that will bight the rifling better. 150 gr 777 and a 295 gr powerbelt is significant (probably not that efficient) but it kicks less than a 12 ga. slug out of an 870.
Link Posted: 7/30/2005 7:59:01 AM EDT
see if you can recover a sabot and look at it to see if it is engaging the rifling, personally my knight shoots better with 90 -100 grains of pyrodex than it does when I load it with 150.
Link Posted: 7/30/2005 8:12:17 AM EDT

Originally Posted By tcmech:
see if you can recover a sabot and look at it to see if it is engaging the rifling, personally my knight shoots better with 90 -100 grains of pyrodex than it does when I load it with 150.


Power belts aren't sabots. They use a fullsize bullet with a plastic skirt.

Good idea though. I make a habit of checking my patches when shooting roundball.
Link Posted: 7/30/2005 8:54:07 PM EDT
Ding ding ding ding, we have a winner!





I ran a 295 gr powerbelt through the barrel with the ramrod and it became apparent that the only part of the projectile that gets cut by the lands and grooves is the plastic "belt" as the metal of the projectile is barely scuffed. It would make sence that it is slipping the lands and grooves because the 150gr of 777is just to vicious. I am going to try some old fashioned Buffalo Bullets in the 250-300 grain range that don't depend on the plastic belts to keep the pressure behild the projectile.
Link Posted: 7/31/2005 10:21:28 PM EDT
Link Posted: 8/17/2005 4:40:00 PM EDT
Just too much powder. You're getting great groups with 100 grains of powder, so why mess with success?

BTW, DO NOT shoot 150 gr. of Triple Seven in ANY gun as it is about 10-15% stronger than a comparable (Pyrodex, blackpowder, etc.) propellant.

Hodgdon doesn't recommend a charge of more than 2 Triple 7 pellets.
Link Posted: 8/19/2005 6:40:30 AM EDT
I'm all better now. Just an accute case of bigger, faster more powerful disease
Link Posted: 9/16/2005 10:40:37 AM EDT
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