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texasmac
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Discussion/comments on stock heel drop
Jan 21st, 2009 at 8:10pm
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Hi guys,

I’d like to discuss stock heel drop, which I’ve puzzled over for some time.  See the stock profile photos below of several currently available BPC rifles.  I’m no expert on the subject and have wondered why most, if not all, “original” BPC rifles were designed with substantial drop at the heel relative to the comb.  Was it due to utilitarian reasons or just esthetically more pleasing to the shooters at the time?  I’m assuming that the rifles available from Pedersoli, Uberti and even Shiloh Sharps are reasonably accurate representations of the original classic design.  

Being somewhat partial to the modern Browning BPCR stock design, which has the same drop at comb and heel and was designed to minimize felt recoil, I wonder why many manufacturers still offer rifles with substantial heel drop, and more importantly, why shooters continue to buy the rifles.  I for one believe that felt recoil increases as the angle from the comb to the heel is increased.  That muzzle rise is not only due to the shooters body moving back due to recoil but is also in part due to the comb angle.  So why would anyone purchase a BCPR with 2” of heel drop relative to the comb?  

I’m convinced that prone shooters benefit from a flat comb.  Could it be that offhand shooting benefits from additional heel drop?  I’m asking because I don’t know.  I’d think that anyone considering a rifle in calibers .45-90 or larger would want a stock with minimal heel drop, but many of these rifles are available in .45-110 or .45-120.  Am I missing something here?  I’d like to hear comments on the subject from you “experts”.

By the way, another reason behind my interest is I’m looking for a commercially available high-wall with a light weight barrel for deer hunting and have yet to find one with a pistol grip stock, flat comb and shotgun butt plate.  The caliber will most likely be .38-55 or .40-65.

Wayne


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Fred Boulton
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Re: Discussion/comments on stock heel drop
Reply #1 - Jan 22nd, 2009 at 5:29am
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I don't know that we are all built the same---I do know that I prefer a straight stockin the prone position. I have a Danish RB which I have never been able to shoot prone and, although I can shoot it very well standing, there is little contact between cheek and stock in the off-hand position.
I recently laid it on top of a rifle which I can shoot prone and discovered to my astonishment that the difference in the comb heights was only half an inch!
Fred
  
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Mozark
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Re: Discussion/comments on stock heel drop
Reply #2 - Jan 22nd, 2009 at 9:04am
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An interesting query. I think that a rifle is a tool, and that, particularly where tools are concerned, form follows function. In general the beauty and grace of a well designed tool flow from this relationship between form and function, and a tool designed on aesthetics alone will almost certainly function poorly. Now clearly this is oversimplification. The skill and artistry of the craftsman or designer play an enormous role, but form and function provide the gridwork on which this talent hangs.

On the other hand any multi function tool is going to endure compromise.  If you consider just two functions of a rifle, firing standing and firing prone, it's pretty clear to anyone who's done both that the geometry between sight line, stock and butt, conducive to doing either well is is different. Throw into the mix the question of whether you want to be able to fire rapidly with reasonable precision, or slowly with maximum precision, and you have compromises to form galore.

Take for example the tens of millions of bolt action military rifles made between 1900 and 1945. This is a huge statistical sample with the same basic design goal. A rugged rifle conducive to rapid fire with reasonable marksmanship from any position. Not surprisingly, whether you're looking at a mauser, mosin or enfield, the bacic geometry between sightline and the shape of buttstock and buttplate is pretty much the same, about 2 1/2" of drop from the sights to the heel, and a relatively smooth buttplate with a rounded heel, allowing the butt to move around the shoulder for any firing position. 

My long winded point is that I don't think that there could possibly be anything random or purely aesthetic about the established stock shapes and geometry of the BPCR period. A period of firearm design in flux, pursued by too many brilliant designers and artisans for (military contracts notwithstanding) too many shooters for whom a rifle was a necessary daily life and death tool, and also too many extrememly demanding sport shooters and competitors. 

I think the first catagory, life and death is the driving force, and the second, sport and competition, produces refinements. 

MM



  
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boats
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Re: Discussion/comments on stock heel drop
Reply #3 - Jan 22nd, 2009 at 5:45pm
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I expect there was little prone shooting in the 19th century except on target ranges.  If we look at the special target rifles of the period they were stocked very little different than we see today in competition.

No doubt high comb flat butt minimum drop to the toe is better for prone.  However while I have shot a lot of prone on target ranges don't think I have ever fired a shot at game from prone.  In my area either the ground is too wet or grass & weeds too high to see through. Sitting is much better in most cases.

Military use consider this, Robert E Lee was nicknamed "The King of Spades" for his extensive use of trench fortifications.  From a trench position stock on the typical 19th Century Minne Ball rife is about right. Same with the Trapdoor Springfield.  Like Mozark said 'Form follows function"

Boats
  
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drc
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Re: Discussion/comments on stock heel drop
Reply #4 - Jan 22nd, 2009 at 7:06pm
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I believe, key word believe (I am having a CRS moment here), that I read something about rifle stock design following what was there before. So before the BPCR rifles were the muzzle loading rifles. And most of those rifles I have seen had the large heel drop. Probably the same as the "horseless carraige" early cars were built to look like carriages as that is what people were used to seeing.

dc
  
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texasmac
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Re: Discussion/comments on stock heel drop
Reply #5 - Jan 22nd, 2009 at 8:08pm
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Boats,

You said, "No doubt high comb flat butt minimum drop to the toe is better for prone."

I, and I think most prone shooters, agree with you, but that begs the question, is a high comb flat butt minimum drop to the toe NOT GOOD for off hand shooting?  Based on my shooting experiences I don't believe that's the case, which brings me back to my fundamental question.  I can understand why the Uberti and Pedersoli rifles, being copies of the originals, have a substantial drop at heal, but what is the rational behind high-end suppliers such as Shiloh and Ballard in offering similar profiles?  Although I may be giving them more credit for doing sufficient research than they deserve.

I'm coming to the conclusion that current manufacturers are just copying the old designs without giving much thought to the requirements of modern shooters.  And, lacking details behind the original old designs, I have not come up with a good reason for the large drop at heel.

I can certainly understand that a larger overall comb drop may be beneficial or more comfortable when shooting off hand & standing, but can't come up with a good reason for the additional drop at heel.  In other words, a flat comb being the best solution for both positions.

Wayne
  

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jfeldman
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Re: Discussion/comments on stock heel drop
Reply #6 - Jan 22nd, 2009 at 10:41pm
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Texasmac
In my own case, I believe that the extra drop at the heel allows me to shoot offhand with my head/neck more erect which is more comfortable for me and causes less strain.  (not that you could tell by my scores, however!)  Grin
Regards, Joe
  
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boats
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Re: Discussion/comments on stock heel drop
Reply #7 - Jan 23rd, 2009 at 4:23pm
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Offhand is another animal entirely.  Remember most old single shots were built for field positions that include offhand & sitting/kneeling. If we consider offhand target rifles, not used in the field hunting, and allow me to ramble some with opinions.

No doubt best stock for most people offhand is high comb.  How high depends on the sights and most old rifles have the sight line real close to the bore.  It's only since scopes were part of the puzzle that real high combs were needed. If the stock has a lot of drop and comb is still high you get a more erect head position and equilibrium is better standing erect than head to one side. It does make for an awkward looking stock.

As far as the buttplate.  Only thing good about a flat one for target shooting is it handles recoil better. Problem with a flat plate is it has to be carried in the pocket of your shoulder to get consistency and even then is not as consistent as hook styles carried between Deluded and Bicep Muscles.  When rules allow smallbore prone shooters often use a hook plate.  Look at a properly adjusted modern rimfire free rifle.  It has in most cases high comb and a lot of drop to the adjustable buttplate. From memory only NRA limits stock toe to 7 inches below the bore, BPC rifles are not built that way to shoot chickens offhand better, it's to make class under the rule and be most suitable for the 75 % of the match thats fired prone.  And BPC rifles are kickers and need the flat plate.

Smallbore prone I was plagued with unexplained off shots until I put the hook plate on the rifle and raised the comb higher.  Offhand same thing hook keeps you consistent shot to shot.  I can lay my modern Anschutz 54 fee rifle over my CPA  Pope stye offhand Schuetzen and stock fit is almost identical.  Single shot it's built that way Anschutz it's adjusted that way.

Boats
« Last Edit: Jan 23rd, 2009 at 4:32pm by boats »  
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