different loads-same poa

[pinto bean]

pards,i'm wonderin'(dangerouly close to thinkin') if you can have a competition (lite) load and a heavier huntin' or social load
that shoots to approximately the same poa. if so, can you give an example?

thanx again.

[Adirondack Jack]

You can.

My Ruger Vaqueros shoot a 250 at 750 fps to POA.  They also will shoot a 200 at 650 (lighter is lower, slower is higher, and that's where they end up cancelling out) to POA. Since they are RUGERS (not for colts or clones), I also happen to know that a 318 grain bullet at a shade under 1300 fps (heavier shoots higher, faster shoots lower, so again they cancel) will cut a postage stamp in two at 25 yards with the same POA.  Note as the bullets get heavier the effect is more pronounced, so ya REALLY gotta smack em hard to move em fast enough to make it work.  On the other end, a 160 at 600 fps is very close to POA, a tiny bit low.

[pinto bean]

that's the ticket. old or new vaqueros?

pinto bean

[Adirondack Jack]

that's the ticket. old or new vaqueros?

pinto bean

these are the old (big) vaqs.  The same or real close ought to hold true with the smaller guns,except I wouldn't even dream of running the 300+ MONSTER loads out of em like ya can the big vaq.(probably blow it up).

[Trailrider]

Not sure this really answers your question, but I have a pair of OM Ruger Vaqueros with convertible cylinders, .44-40 and .44 Magnum.  I run the same 213.5 gr MasterCraft bullets about 950 ft/sec from the 7-1/2" barrel. (The other gun is a 5-1/2".)  I get a pretty good match between the two cartridges, using the same powder, Universal.  Half to use 1/2 grain LESS powder in the .44 Magnum case to get the same velocities and just about the same Point of Impact versus POA, out to 25 yds. It takes some experimenting.

The deal, of course, is getting the trajectories and the amount of "free" recoil to match up, as both affect POI.  Heavier bullets generally have more dwell time in the barrel than lighter ones, so the gun can recoil upward more.  But muzzle velocity as the bullet leaves the barrel also has an effect on the trajectory.  If ya like playing with ballistics, it's a nice challenge!

[Sir Charles deMouton-Black]

The only variable that affects POI in a revolver is bullet weight.  Velocity changes due to higher pressures affect "barrel time",but are calcelled out by changes in "muzzle jump" with the same weight of projectile.  (faster leaves sooner, but before the muzzle rises too much.)

Bottom line;  As long as you keep bullet weight the same, a "lighter" load should hit the same POI.

POA  = "point of AIM"

POI  =  "point of IMPACT"

This is as I have observed with many revolvers.  There may still be others that haven't learned this little rule!

[Adirondack Jack]

Sir Charles, that simply is not so.  A HEAVIER bullet will cause more barrel rise, but if driven fast enough, it absolutely CAN leave early enough in the barrel's arc of rise to overcome the effects on POA of the added weight.  the MUZZLE will jump as much as 90 degrees, but the bullet is long gone, and will hit the same POA as a lazily launched lighter bullet that leaves relatively later in the barrel arc, but the arc is much less severe..  See the examples in my post above, gleaned from YEARS of meticulous research.

[Sir Charles deMouton-Black]

Perhaps I should not word my posts in such a categorical fashion.  I don't want to start a PM!

I read your post with some care.  I believe what you are speaking about is "compensation", a term used by long range shooters. The SMLE, No. 4 was noted to throw slower rounds higher than faster ones.  At between 800 and 100 yards the POI's converged.  Instead of vertical stringing, the effect on the group was more like a flattened balloon.  The Rem 788, on the contrary, was noted by several writers to result in vertical stringing as the ranges grew longer.  Model 92's of my experience are notorious in grouping high with light loads and low with hot loads.

I can see what you are talking about, I think, but MY observation, is that heavy bullets leave the barrel higher than lighter ones regardless of MV (within reason).  Most of my shooting is at 25 yards or less with pistols, so I give you the point.