Home | Ezine | Forums | Links | Contact
NitroExpress.com: Powerbelt bullets

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies


*** Enjoy NitroExpress.com? Participate and join in. ***

Shooting & Reloading - Mausers, Big Bores and others >> Muzzleloaders & Blackpowder

DarylSModerator
.700 member


Reged: 10/08/05
Posts: 26618
Loc: Beautiful British Columbia, Ca...
Re: Powerbelt bullets
      29/11/09 04:47 AM

Quote:

Quote:

Anything larger than a 13 bore lacks a flat enough trajectory for easy hitting past about 175 yards.



I no not dispute this, but I wonder why it would be true? If the velocity is the same, the trajectory of the larger round ball will be better. This is because the air resistance of the ball increases with the square of the radius, and the mass of the ball increases with the cube of the radius. That means, counter-intuitively, that the BC of a round ball increases as the ball gets bigger. So, are the larger bore guns fired at a lower velocity because of intolerable recoil?




To get, say 1,550fps with a 14 bore, you'll need 155 to 165gr. 2f powder. This charge is Ok to shoot with a 480gr. ball, whereas, for instance, a 600gr. ball shot from a large 12 or 11 bore, will require 200gr. to get the same speed. Recoil is the deciding factor. Most agree that 9 to 9 1/2 pounds is a good hunting weight. In order to reduce the recol to the same comfortable level of the 14, the 12 or 11 bore would have to be 12 pounds or more. More powder plus more ball weight, while being the better killer, just kicks too much for most people to shoot accurately and this recoil usually prevents serious practise which is necessary to become familiar with the rifle over different ranges.

The 14 bore is easy enough to shoot that I use it for rendezvous conpetition shooting when I want to seriously contest for first place - it seldom lets me down.

I have a buddy with a .75 rifle, similar to my 14 bore. Both guns weigh the same and mine is easy to shoot, while his gets used only for hunting as it recoils too much. To deliver good accuracy, both guns demand to be fed a decent charge and the most he's comfortable shooting in his 9 pound rifle, is 130gr. This only gives him about 1,250fps with the 600gr. ball, and his drop at all ranges is more, demanding more accurate range doping even at fairly close ranges.

After using this .75 calibre gun for some 20 yards, many years it's the only gun he used for deer, elk and moose, he's of the opinion he should have had my bro make him a 14 bore instead just because it's powerful enough and is much easier to shoot well. Although his gun has more power, it's more difficult to shoot and not as accurate as it wants more powder for equivalent accuracy, which is more than he's capable of handling. Reducing the charge makes it easier to shoot, with about 1/3 more drop at any range in comparrison. With the 14, judge a deer as 100yds. when it's actually 120, even holding in the middle and you'll end up with a low or mid heart shot with a centre hold. The same scenario with the .75, and the ball will miss low, just barely punch the brisket or hit a leg, both of which are bad wounding shots. On a moose, the difference isn't as noticable due to the huge kill zone, however, add another 40 yards and adequate accuracy begins to enter the equation. Although the .75 is quite powerful enough on any continent, much more than necessary for N.A., the gun quite literally kicks too much to use an appropriate charge to maintain accuracy, so he reduces the charge and limits his range. My 14 bore as it's loaded is good to at least 200 on ungulates & has the power and accuracy for even farther shooting which has been demonstrated quite often.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

Post Extras Print Post   Remind Me!     Notify Moderator


Entire topic
Subject Posted by Posted on
* Powerbelt bullets BlainSmipy 18/11/09 02:03 AM
. * * Re: Powerbelt bullets Dphariss   18/11/09 02:43 PM
. * * Re: Powerbelt bullets DarylSModerator   18/11/09 04:12 AM
. * * Re: Powerbelt bullets Tatume   18/11/09 04:44 AM
. * * Re: Powerbelt bullets DarylSModerator   19/11/09 02:29 AM
. * * Re: Powerbelt bullets JabaliHunter   21/12/09 11:26 PM
. * * Re: Powerbelt bullets DarylSModerator   22/12/09 03:33 AM
. * * Re: Powerbelt bullets BlainSmipy   19/11/09 04:38 AM
. * * Re: Powerbelt bullets Dphariss   20/11/09 02:15 PM
. * * Re: Powerbelt bullets PBR   21/11/09 05:21 AM
. * * Re: Powerbelt bullets Dphariss   28/11/09 02:09 AM
. * * Re: Powerbelt bullets PBR   28/11/09 05:16 AM
. * * Re: Powerbelt bullets Dphariss   29/11/09 01:54 PM
. * * Re: Powerbelt bullets PBR   01/12/09 02:23 AM
. * * Re: Powerbelt bullets BlainSmipy   09/12/09 04:25 PM
. * * Re: Powerbelt bullets Tatume   09/12/09 11:09 PM
. * * Re: Powerbelt bullets DarylSModerator   10/12/09 02:18 AM
. * * Re: Powerbelt bullets Tatume   10/12/09 04:13 AM
. * * Re: Powerbelt bullets DarylSModerator   11/12/09 03:29 AM
. * * Re: Powerbelt bullets Tatume   12/12/09 06:50 AM
. * * Re: Powerbelt bullets Dphariss   14/12/09 02:38 AM
. * * Re: Powerbelt bullets Tatume   28/11/09 08:35 AM
. * * Re: Powerbelt bullets DarylSModerator   28/11/09 03:00 PM
. * * Re: Powerbelt bullets Tatume   28/11/09 11:57 PM
. * * Re: Powerbelt bullets DarylSModerator   29/11/09 04:47 AM
. * * Re: Powerbelt bullets DarylSModerator   28/11/09 03:03 AM
. * * Re: Powerbelt bullets DarylSModerator   19/11/09 05:06 AM
. * * Re: Powerbelt bullets Tatume   18/11/09 06:08 AM
. * * Re: Powerbelt bullets BlainSmipy   18/11/09 10:37 AM
. * * Re: Powerbelt bullets Dphariss   18/11/09 02:33 PM

Extra information
0 registered and 12 anonymous users are browsing this forum.

Moderator:  DarylS 



Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 13163

Rate this thread

Jump to

Contact Us NitroExpress.com

Powered by UBB.threads™ 6.5.5


Home | Ezine | Forums | Links | Contact


Copyright 2003 to 2011 - all rights reserved