NitroX
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| (.700 member) |
| 01/01/08 02:23 PM |
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Re: 50-90 Double Barrel Rifle and More
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Quote:
Hummmm.
Not sure if we are all talking about the same thing here , that's why I asked Bonanza the question. His post seems to indicate that you can get a rifle to regulate ie both barrels shooting to same point of aim with a different weight of head and different charge, but with a lower POI. Yes that I can see and is no different to re-regulating an old double.
However what I cant get my head around is using a lighter weight head and less velocity for a practice load and getting it to shoot to the same POI as the full house loads, shoot together yes but the same POI??. My experience with pistols and BA rifles suggests that it cannot be done. And If you drive the lighter head faster to raise the POI then you end up with the same recoil or worse because of a faster recoil pulse.
Regards
Bramble
450NENo2 on these forums believes there is a 75% rule. That is if you use a bullet with approx 75% of the same weight as the standard regulated one with the same powder charge you will get the same point of impact and regulation.
He says it has worked many times.
I don't know why, but I guess it may have something to do with less barrel flip vs higher velocity?
Obviously use a filler if needed.
So for a .450 with a 480 gr projectile, try a 350 gr with the same powder weight.
If you try it please report back.