Author Topic: Just got a new Green Mountain .50 --- 32 inch 1 in 70  (Read 1413 times)

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Offline NikonRules

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Just got a new Green Mountain .50 --- 32 inch 1 in 70
« on: September 18, 2006, 04:19:30 AM »
I am using 70 grains of Prodex and Moose Snot and it shoots pretty good at 50 yards - 1 to 2 inches.
The problem I am having is at 100 yards! I  get groups between 6 inches and 12 inches.,
and that is off the bench! Should I take the powder charge up?

Thanks

Offline roundball

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #1 on: September 18, 2006, 08:33:52 AM »
Round ball twists usually do better with more robust charges...TC lists 110grns 2F (PyrodexRS) for their max .50cal RB load.
I used 70grns RS for weekend target loads shooting cans, etc, and 110grns RS for hunting.
(now use 90grns Goex 3F, but basically the same end result)
"Flintlocks.......The Real Deal"
(Claims that 1:48" twists won't shoot PRBs accurately are old wives tales!!)

Offline Biff Mayhem

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #2 on: September 19, 2006, 05:28:43 AM »
I am using 70 grains of Prodex and Moose Snot and it shoots pretty good at 50 yards - 1 to 2 inches.
The problem I am having is at 100 yards! I  get groups between 6 inches and 12 inches.,
and that is off the bench! Should I take the powder charge up?

Thanks

Yep.. kick it up over 80 grains... may have to go as much as 100.
Keep an eye on your patches. Moose Snot is not the answer for everyone - as the caliber gets larger and the powder charge increases.
Keep that ML smokin'
Dave

Offline Davemuzz

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #3 on: September 20, 2006, 12:34:25 AM »
I am using 70 grains of Prodex and Moose Snot and it shoots pretty good at 50 yards - 1 to 2 inches.
The problem I am having is at 100 yards! I  get groups between 6 inches and 12 inches.,
and that is off the bench! Should I take the powder charge up?

Thanks

I bot a Green MT. last year. Excellent barrel. I use 90 gr. of Goex ff and a .490 round ball with .015 pillow ticking patch. I get those 2" groups at 100 yards consistently.

I would say bump up your powder charge and see how that goes. Check your Green Mt. documentation for what they say the max is and if the 90 grain goes well, try the maximum and see what you get.

Dave.

Offline NikonRules

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #4 on: September 20, 2006, 12:46:51 PM »
What lube would you suggest if I take the powder up to 90 grains or over?

Offline Davemuzz

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #5 on: September 20, 2006, 02:42:37 PM »
I am using T\C pillow ticking pre-lubed with Natural Lube 1000 Plus. This seems to work fine for me.

Dave.

Offline lostid

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #6 on: September 21, 2006, 08:40:55 PM »
well, with a new barrel,,,,just put a pie plate at 50 yards and experiment with different powder charges and differet lubes. Alot.

 Don't worry about sight adjustment for at least 200 rounds :). Just find where it's shootin and hold accordingly. Truth be told. Clean the barrel well before you shoot it. and clean it well after.

200 rounds is just the beginning of what a new GM barrel is capable of,,,,luck to ya
i'm a realist. i've not seen it all, but man ,,I've Been Around the block once or twice

Offline sparsons

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #7 on: September 23, 2006, 05:06:20 PM »
Bought .50 Green Mountain replacement for my Hawken couple months ago. I started with a .495 ball at the advice of the store where I bought it. They suggested the .495 ball and 75 grains of 3F Goex. Good set up but mine likes more powder for 100 yards. Shot 85 and 90 grains yesterday at 118 and it did great. Green Mountain booklet calls for 110 grains as the limit.

Offline Biff Mayhem

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #8 on: September 23, 2006, 06:15:05 PM »
My GM likes the butter-lubed smooth cotton in .015.

 I like tinkering with different lubes. Just made two batches for tomorrow. One tin has Olive Oil lubed patches -- the other has Peanut Oil lube patches - both ready to go. I tried the Ballistol/Murphys/alky trio last week with poor, firery results. :o
Keep that ML smokin'
Dave

Offline jh45gun

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #9 on: October 04, 2006, 01:18:06 PM »
I have one of those barrels in a 54 cal that I made with a left hand side lock percussion. I like it they are great barrels.
Said I never had much use for one, never said I didn't know how to use it.

Offline slayer

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #10 on: October 04, 2006, 02:53:42 PM »
I just bought a .32 Caplock GM barel for my Renegade. Better hurry guys, GM is discontinuing many of these barrels for the T/C`s and the .32 is one of them. Jack.

Offline victorcharlie

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #11 on: October 11, 2006, 01:34:46 PM »
I shot my GM 1 in 70 twist on the TC Renegade a lot yesterday with similar results.

Haven't shot it in several months, but it shot 70 grains of pyrodex RS, .490 roundball, and .15 oxyoke patch just fine at 100 yards last time and now I can't get a group at all.

I've bumped the load of pyrodex RS to 90 grains still no luck..........I ran out of caps and had to quit so I'll try again next week.

70 grains, as well as the 90 grain load shoot very, very well at 50 yards but is all over the place at 100.

I did not swab between shots and that's something I'm going to try next week.  Swabbed when loading became hard and that was after several shots.......then I swabbed with bore butter......

Any other ideas?
"Extremism in the defense of liberty is no vice. Tolerance in the face of tyranny is no virtue."
Barry Goldwater

Offline roundball

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #12 on: October 11, 2006, 04:27:59 PM »
As a user of Natural Lube 1000 bore butter for many, many years, I think it's an excellent lube and I use it religiously....however.....I don't find it very good as a swabbing agent...it just packs more lube in which builds up more and more until it finally affects accuracy.

To truly 'swab' a bore for the purposes of maintaining it at an almost clean status for each shot, there has to be a fair amount of moisture involved to "dissolve" the BP fouling so it's wipe out easily.

In locations of high humidity, just NL1000 lubed patches alone will usually let me shoot entire range sessions without wiping between shots because the high humidity keeps the little bit of Goex fouling so soft the next patch wipes the bore clean while being seated, and the cycle repeats for each shot.

If you're shooting in real dry low humidity conditions, I suggest you swab the bore between shots with patches almost wet with TC #13, or "Hoppes No9 Plus BP solvent & Patch Lube".....but not so wet that excess drops squeeze out and run down bore to kill the next powder charge....(even patches wet with water or spit will work if they are wet enough)

Or...take a bag of NL1000 patches and squirt a few lines of Hoppes in the bag, squish them all around until the patrches are very damp to almost wet and use them like that...I shoot a 50 shot range session every weekend during dry conditions without wiping between shots at all, using patches prepared that way and the bore stays so clean that when I clean it back at the house after 50 shots, there's barely a trace of fouling that pump flushes out of the bore into the pail of water...Hoppes No9 Plus BP Solvent & Patch Lube has been outstanding for me.
"Flintlocks.......The Real Deal"
(Claims that 1:48" twists won't shoot PRBs accurately are old wives tales!!)

Offline NikonRules

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I took a nice fat doe!
« Reply #13 on: November 11, 2006, 06:39:53 AM »
Thanks for all the suggestions guys and do keep them coming.

On Thursday - Nov 9th -  I punched a nice hole through a big fat doe
with the 70 grains opf Pyrodex. It went through both sides of her lungs
busting ribs on entry and exit with a 185 grain roundball. I was hand holding
and the doe was 65 yards out. She ran for about 50 yards before she bled a drop.
After that she blew blood like a spray can and fell down a ridge - very dead.

A 50 cal roundball is VERY deadly with 70 grains - even at 65 yards!

Offline simonkenton

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Re: Just got a new Green Mountain .50 --- 32 inch 1 in 70
« Reply #14 on: November 11, 2006, 08:57:06 AM »
Good shooting!
Yes the round ball is a deadly projectile.
Aim small don't miss.