GUN STUFF

[muskrat]

does anyone have any experience fitting one of these to a Taurus Judge? http://www.midwayusa.com/viewProduct/default.aspx?productNumber=880874

[fastwin]

Nope. Have you checked on Hogue's website to see if they make a mono grip specifically for the Judge?

[muskrat]

nope but will check

[WarrenJ]

Was asked to be a range officer for a Batchelor Party shooting event.  It was on a private farm and went real well. Lots of fun especially since we had 50 lbs of Tannerite!  2 lbs of tannerite combined with any large household appliance results in a pretty awesome scrap pile.  I didn't realize that washing machine tops could fly 100 yards.  When I get the videos uploaded, I'll include a link.  BOOOOMMMMMM!!!!!!!!!!

[WarrenJ]

http://kwk.us/twist.html


This is a link to a bullet length/twist calculator.

[ducpainter]

http://kwk.us/twist.html


This is a link to a bullet length/twist calculator.

I'll need another cup of coffee to get through that.

[DRKWNG]

I'll need another cup of coffee to get through that.

I'll get a pot started for you.

[rgramjet]

I'll get a pot started for you.

Hey, this isn't tosat.  Keep that coffee making crap over there!

[rgramjet]

Was asked to be a range officer for a Batchelor Party shooting event.  It was on a private farm and went real well. Lots of fun especially since we had 50 lbs of Tannerite!  2 lbs of tannerite combined with any large household appliance results in a pretty awesome scrap pile.  I didn't realize that washing machine tops could fly 100 yards.  When I get the videos uploaded, I'll include a link.  BOOOOMMMMMM!!!!!!!!!!

How much is that stuff?

[ducatiz]

Its really a bit of a misnomer that slow rifling twists require light bullets.  The real determining factor is bullet length.  The longer the bullet is, the faster it has to be spun to stabilize it in flight.  I've experimented with powdered tungstun cores in bullets and you can make a real heavy short bullet that will stabilize in slow twists.  

One bullet that really suprised me with this was the Barnes 165 grain .308 solid.  It shoots fantastically in my 30-06's and 300 Win's with 1 in 10 twists, but when shot from a 1 in 12 twist 308, it shot over 12" at 100, with oblong holes in the target.  The bullet, because it was less dense than lead (bronze) was longer than the 1 in 12 could stabilize.  Standard lead core 165's shoot great in that rifle.

You can make up for a little bit of twist by pushing the bullet faster also.  

My understanding of all the 22 WMR I've used is that it is made with a fast-burning pistol barrel powder.  A heavier projectile will do well with that in a short barrel, but in a rifle barrel, the fast burning powder will not let the heavy projectile accelerate for the full length of the barrel, thus a lighter projectile will move quicker out the barrel.

A slower burning powder would expand for the length of the barrel and a heavier projectile would perform better. 

[WarrenJ]

You are right as far as propellant burning rate vs bore volume vs resistance of the projectile is concerned.  The 527's we were talking about is in 223 Rem though, which has way greater case capacity and strength over the WMR to handle the higher pressures.  (sorry we got sidetracked)

One of the other interesting relationships (to me anyway) is the issue of resistance of the projectile going down the barrel vs actual bullet weight.  Loading information is almost always based on bullet weight, when in reality the issue is really the amount of resistance.  Somkeless powder burns progressively which means that the more pressure that is on it, the "harder" it burns.  A bullet with a long bearing surface, or a bullet which is harder, will be more difficult to push down the bore, causing the powder to burn "harder" causing more pressure. 

Sometimes, if you like to disregard maximum pressure warnings in reloading manuals, you can run higher powder charges with bullets that have shorter bearing surfaces for their lenght than other bullets without developing excessive pressure.  ( Dont try this at home kids)  We ran some ridiculous loads in the 243 with the Hornady 58 grain V-Max bullets as they have a miniscule bearing surface.  4000 fps in a 243 and 4140 fps in my 243 Ackley Improved.  Hard on both barrel life and varmints - broke them down into their basic amino acids!

[ducatiz]

You are right as far as propellant burning rate vs bore volume vs resistance of the projectile is concerned.  The 527's we were talking about is in 223 Rem though, which has way greater case capacity and strength over the WMR to handle the higher pressures.  (sorry we got sidetracked)

One of the other interesting relationships (to me anyway) is the issue of resistance of the projectile going down the barrel vs actual bullet weight.  Loading information is almost always based on bullet weight, when in reality the issue is really the amount of resistance.  Somkeless powder burns progressively which means that the more pressure that is on it, the "harder" it burns.  A bullet with a long bearing surface, or a bullet which is harder, will be more difficult to push down the bore, causing the powder to burn "harder" causing more pressure. 

Not just friction, but also the material of the projectile.  By itself, lead forms well to the barrel grooves and pretty much any jacket is harder and requires more energy spent to form to the grooves. 

What do you think about the shape of the frustrum, i.e. SPBT vs flat regarding acceleration and ogive shape?  We were taught that secant ogives were better for velocity but tangent ogive better for accuracy -- minute differences of course.

[The Bacon Junkie]

My friend decided to to give the Ruger to his kid brother...

Just as well, I guess... 

[WarrenJ]

I think there are so many other variables to accuracy, the ogive shape is of secondary importance.  Obviously the "slipperier" the shape is, the less it will slow down per unit of time.  I've shot great groups with secant and tangent bullets.  The bullets I make are mostly secant ogives.  I make both flat base bullets and rebated boattails.  Flat base bullets will typically shoot better than standard boattails, especially at closer ranges (out to 300 or so).  After that, the higher retained velocity of the boattails will start cancelling out some of the effects of wind and other variables which give the boattail a practical, but not necessarliy intrinsic increase in accuracy at longer ranges.  

It seems that once a bullet gets beyond a certain length in relation to its diameter, the boattail has less and less effect.

My favorite 30 cal bullet is a 205 grain flat base low drag secant ogive bullet.  I've shot NRA master class scores with those bullets at 600 and 1000 with my 30-06 target rifle and customers of mine have killed deer with the bullets in 300 Win at over 1000.  Its a neat bullet in that it is target accurate, flat shooting and very destructive on meat.  

Another effect is the relationship between the bullet base shape and the crown of the rifle barrel.  A flat crown will typically shoot better with a flat base bullet and various angled crowns  seem to work better with boattail bullets.

[WarrenJ]

Tannerite or some of its competitors runs about $150 for 50 lbs in bulk.  Smaller units are obviously more.