What's unique about the Bison Hunter grip vs the Standard Bisley or the Bradshaw or?
Thanks,
Paul
Howdy Paul.
The concept that makes these unique is based on our work with the four degree forward series. For those who have not been following the progress through the previous thread posting about them,
A lot of experiments that have been done over the past year with mating different unique features of various grip frame types together has yielded some very interesting results!
At first We, and when i say we, ourselves and Bradshaw have devised a way to extrapolate some math or geometry involved in the Human hand for angles and length of trigger pulls..
I have conceived a formula of sorts that allows me to put an angle plane on the various frame types. Notably the bisley series back straps and Conventional plow handles are light years apart from one another!
Each with their very own advantages over the other. Knuckle clearance has always been at the forefront of my designs, but i have realized that it is easier to do with large hands than small, contrary to popular belief.
Let me explain! With a big hand you will have knuckle issues with the trigger guard yes, but you can always design the grip frame front and Back strap further backwards to relieve area for knuckle clearance from the trigger guard.
At the same token you can still reach the trigger comfortably with a large hand. With a smaller hand you cannot. If you move the trigger guard forward, you will have trouble with the triggers available fitting properly within the guard.
So where does that leave us? Only large hands can shoot comfortably with big calibers? No way man. we have to fix this!!!!!! Just because you have small fingers does not necessarily mean you wont have knuckle tag.
The trick is to get the position of your hand in the middle of the recoils pushback versus muzzle flip. It truly depends on how the bore axis is positioned with your gripped hand vertically and the angle that your hand is positioned in neutral to upward movement.
I hope that makes sense. Maybe a comparison would best show to the difference. Imagine or picture in your mind your hand positioned on the grip frame of a conventional plow handle. SBH or an xr3Red.
you will notice that your thumb web is sitting roughly an inch and a quarter below the bore axis on the backstrap. Now picture how your hand is positioned on a bisley grip. You will now notice that your hand is sitting in a position higher up on the backstrap and your thumb web is now 3/4 s of an inch below the bore axis. Yes, your hand is now a half inch higher or closer to the bore axis!!!!!!!!!!!!!!!!!!!!!! This changes everything!!!!!!!!!!!
So when that mean ole powder goes off the case head will push up against that breech face and push back and rotate the muzzle upward. Now the order and intensity is where the math comes in.
On a conventional plow handled rig, the muzzle will flip up at a greater rate than it will push back because you are holding the gun lower to the bore axis. On a bisley type backstrap it is much more balanced in a sense that now because your hand is higher up than a plow handle you will notice the gun pushing back quicker than the muzzle flips. That is also the problem because the standard bisley is sitting at 100 degrees roughly from the bore axis as opposed to the SBH at 108.
Remember your hand is tilted further forward with a plow handle.
In other words you have lost 8 degrees of rotational distance for your wrist to move upward with out coming to the end of you lower forearm tendons and mashing those cartilages between the bones in your wrist.
When it pushes back harder than it flips , you have knuckle contact and what i call reactionary regrip! That moment when the body's natural instinct is to catch something that is trying to get away from you! you squeeze harder as a reaction
to the sudden movement and you try to control it. That moves your grasp on the gun now because you regripped it with the muzzle higher than when you pulled the trigger.
On another note, when holding a bisley type backstrap grip frame your trigger finger is now pulling the trigger at more of an upward angle as opposed to a conventional.( Changing length of trigger pull.) Because your hand is higher up on the frame.
The difference is subtle but it is there and some of us will notice after a big shooting spree.
I could go on and on about what we have tried here but i can assure you that when i rotated the handle part of the Frame 4 degrees forward the whole ball game changed. PERIOD.
What i noticed first was without even adding more knuckle clearance the trigger guard was now rolling over the knuckle instead of knocking the peewadaly donkey crap out of it with 525 grain gas checked tyrannosaurus Rex loads at 1200fps.
Previously 30 rounds and i was done. 4 advils and tv for the rest of the evening! After two 64 packs with the 4 degree and a brief five minute cool down of the hot Ruger cylinder with an air blower, i came back in to type on the keyboard for a bit.
I scratched my nose amongst other parts of my big ass and was just absolutely flabbergasted with how good my hand felt after launching over a hundred and thirty very very pissed off 500 Linebaughs!
What i believe that is happening here is just plane old balance. Balance of push back versus muzzle flip! under full recoil and rotation i still have a little rotating room left over and i have not regripped the handle. And of course not a knuckle tag yet. That to me was the kicker. Poor ole Lees knuckle is hard to discern from his knee because of massive amounts of knuckle tagging with the trigger guard.
As a joke from some of the great guys on this forum and a (big shout out to Super Dave) i made this four degree version with a larger trigger guard and straightened the angled 4 degree bottom of the frame back out, which
added a little length to the backstrap. Kelye and AK450 were joking about Bison meat when David came to the table with the bison Hunter. Big hole for gloves and longer. Just to mess with them i decided to draw it up. Well Hell If we are gonna draw the darn thing we might as well cut it out huh? David has one for testing and then decided to whittle on her a little to add finger grooves for index locationing and has been testing the heck out of it. I liked it because it felt good and shoots well with biguns.
So i mimicked his finger grooved version and realized i need one just a smidge bigger. So we made two. An FG and An FG Large! Man is it Kewlness. I love it!
I hope that helps bud and i would be glad to elaborate the best i can for you. You guys are the best man!
By the way hahahahaha, He calls his test frame the Butchered Bison Hunter. Hilarious!
Here are some pics to help give a visual.
This one is a Standard Bisley in Red with a Bradshaw Bison Finger Groove in black over it!
The next is the Biggun. The Bison Finger Groove Large.
The backstrap has added Material rearward and the front strap has been extended.
Same gig, Bisley red FG large in black. This one has a lot more knuckle clearance.
This one is the Two Finger grooved together. If experimentation on Super Daves part decides that the extra meat on the backstrap is good we might add it to the Smaller Finger groove.
If you dont like it, It comes off easy, if you do, its allready there!
Hope that explains it fellas.
So far Daves diggin it!
