RE: Shooting Artillery bullets....
 

He is shooting a 28" Green Mountain Barrel which gives probably 27.5 " of working bore. If you are shooting an inline, then you'd have maybe 24.5" of working bore? He is shooting 777 3f, so that may also have an effect. His chronies were higher than I would have guessed, evidently the GMB 3f 777 are very efficient with the 460 NE.

Based on his results, I would guess that 90 grains of 3f 777 would yield 1575 +- 15 fps at the muzzle in his GMB. The extra length of barrel and the difference between 3f and 2f could account for the difference. It will be interesting to read your findings on the results you get with your new fast twist lyman rifle.

RE: Shooting Artillery bullets....
 

Sabotloader (or should I say Former Sabotloader :)) - I have a pretty good conical load that has performed well both at the range and on elk in the field. I'm not sure how bad the recoil is going to be out of a hawken type rifle though - it wasabout like a 12 ga.turkey loadout of a Black Diamond.

I use a 410 gr. Hornady Great Plains with a MMP Ballistic Bridge sub base; and load 120 gr. 2F Triple 7. It was goingabout 1800 fps in mygun and shot 2" at 100 yards pretty consistently. The 200 yard groups were about 6". This bullet shot fairly well with charges in the 70 to 90 gr. level without the sub base - but really opens up at the higher charge level unless you use the plastic base. On elk, it is one of the big bruisers that mushrooms moderately, but still has good penetration for shoulder shots.

The use of a Caldwell Lead Sled will allow you to shoot these extensively without getting all bruised up. I never feel the recoil when actually hunting.

You might first check and see if your sidelock is rated for magnum loads before going this high with 2f Triple 7. My understanding is that the 150 gr. Pyrodex loads are in the same pressure and performance bracket. Good luck. Roskoe

RE: Shooting Artillery bullets....
 

Dear Conicaloader, :D:D:D

If you remember right, the last time you were over, I tried to get you to shoot some of my conicals. I was just trying to give you a head start on all this, but noooooooooooooo. :D

Send me an email when you firm up your schedule for this weekend. Josh has a basketball game sometime Saturday also. If nothing else, we can meet at Sportsman's WH in the evening and try to get each other in trouble. I think they are having a sale on scopes!!!!! :D

I don't think it has been mentioned here, but given the new Idaho rules, isn't the length limited to 1 1/2 times the diameter? I have a good assortment of Bullshops. They are all .5040" and .5045" diameter. What diameter are the 460's you bought? I have 300 gr, 350 gr, 400 gr, 460 gr, 500 gr and 620 gr. Yes, the 620 gr on top of 100 gr of T7 packs a punch. Remember that???? But, on a side note, two weekends ago I got out and shot some of the 460's on top of 70 gr of Swiss fff. Dang, that stuff has a SHARP recoil.

Mike, you can see a picture of the 300's and 350's on the Mr. Bullshop post on DWB's. Also, the length of the 300 gr is .625" and the length of the 350 gr is .720". So, if 1 1/2 times is the limit, the 350 might be as big as you can go in the .50. I haven't measured the 400, I'll try to remember to do that tonight.

Nice shooting by the way. And stop telling everybody you are not that good of a shooter with open sights.;)

RE: Shooting Artillery bullets....
 

Boy! That 80-grain load looks real good to me. It should do for most anything you aim it at.....

RE: Shooting Artillery bullets....
 

Sabotloader, I'm nothappy to see the edit to "yards" on the target. I had been thinking "I might be able to do that with my gun at 50 feet". Now you're back out of my league! Nice shooting "newbie".

RE: Shooting Artillery bullets....
 

yeoman

Sorry sbout that... i have been working for the forest service using my laser to measure trail and parking lot distances - so I have to remember to convert the yards it reads to the feet the fs uses- so I just had feet on my mind I guess... but it was suppose to be 50 yards.. the gun was already sighted in for 300 grain sabotted bullets - so I went right to 50 yards... I am hoping to shoot some @ 75 and 100 tomorrow if everything goes right....

RE: Shooting Artillery bullets....
 

Those are some really good numbers for that bullet. I shot the 410 gr. great plains conicals this past season with 90 gr. of FF 777. The range results were very good andthe results on deer and hogs were impressive. I've got some I can send your way if you want to try'em. They're a hollow based, flat point.

RE: Shooting Artillery bullets....
 

Chris W.

Thanks for the offer Chris... I am going to hold up right now there may be a bullet length issue... there was nothing posted in the "new rules" that I down loaded from the Idaho Fish & Game, but I do know the"trads" would really like to keep it to PRB's.....maybe they got that language in also...

RE: Shooting Artillery bullets....
 

A bullet length issue? Oh brother :eek:. Just let me know and I'll sendsome your way.

RE: Shooting Artillery bullets....
 

I had overlooked this thread Mike, but I don't see why you need be concerned with anything better than that 70 grain load. Stacking holes at 50 yards out of a sidelock with 460 grains conicals -you are THERE. Those velocity figures are impressive for the heavier charge but the only one that's going to know the difference so far as effect is YOU. You will be punishing yourself to make a dead animal deader. :D

I've not ran any ballistic charts but either load should be fine out to about 125 yards without worrying much withholdat ranges from here to there. Again, the additional powder is only going to leave more bruise on your shoulder - you still won't have anything resembling the kind of trajectories you've gotten used to seeing. In fact, to heck with ballistic charts. Settle on that 70 grainload and learn your rifle's behaviorwith further practice. My guess is you'll run out of eyes before your rifle becomes limiting. :D

Be interesting to see where that 70 grain charge puts you at 100 yards with no changes (sights, load, nuttin). I'll guess you'll be about 2" low at 100 yards and 32" low at 200 yards :D. Now if you used the heavier powder charge, you might only be 28" low at 200.

Are range finders legal out there? Wheels? ;)

I'll confess that I only skimmed this thread to before posting, looking back through to make this edit - saw your ballistic charts... you know they might be pretty close. :D

Snowball arc but the arc isvery consistent - snowballs from hell!! :)