Magnetic sand?

M

mikecr

New member
On another forum an enterprising fella is selling 'magnetite sand'.
Seems it's very heavy, and some are jumping on it, but I wonder about BR rules w/regard to magnetic or ferrous sand.
Is it allowed in competition?
Would it be allowed if someone also had ferrous or magnetic devices for weight within a stock?
Do judges check this kind of stuff -with a magnet?

Seems a violation of the 'spirit of' rule,, Well, that's just my thinkin
 
fly Poop in the pepper. have you ever been beaten by a heavy bag? and if it is a "sand", it fits the soirit of the rule
 
As I read the rules currently posted on the NBRSA web site, they say "containing sand only" and the only reference to metal is a prohibition of its use in the constriction of the bag itself. Previous discussions, on this site, have brought to light that sand is a particle size, not a description of what the particle is made of. Perhaps, is enough people are concerned, the rule will be modified to more accurately reflect the wishes of members, and or the original intent of those that wrote the rule in the first place, who may not have been geologists, or materials science engineers.

I also checked the IBS rules, and in those the only metallic sand that is allowed is zirconium silicate. I find this interesting because in their attempt to be more specific, they may have used a term describing something that is probably not being used by anyone, and is evidently not (based on an image search on Google using the term zirconium silicate) the black stuff that is commonly being sold by specialty retailers as "heavy sand".
 
It's my belief that if a person used varying sizes of lead shot to fill them it would make no difference in scores or group sizes so what is the point. If there were no restrictions and any mareriel was legal would folks be using delrin or pig iron or whatever? Does anyone think it would matter to the scores and group sizes?
 
Vern,
Where did you copy and paste from?


This is copied from the NBRSA web site.

The Rear Sandbag shall be a bag, or combination of bags,
containing sand only. The bag must be able to be deflected
horizontally at least ¼ inch with finger pressure at any point,
except for the bottom 1 inch of the bag, which may be hard. A
vertical spacer under the rear bag will be allowed as long as it
incorporates no adjustments for windage or elevation. The
vertical spacer shall not contain any protrusions, which can be
inserted into the bench top or the sandbag. (At the 2001
Annual Board Meeting, the Dunrud-type rear rubber ring
spacer, for use under the rear bag, was legalized for use
beginning on January 1, 2002, and was then approved by the
membership at the 2002 General Membership Meeting.) The
rear bag shall not be contained in any matter. No metallic
materials may be used in the construction of the sandbag.
Tape on sandbag is legal.

And this from the IBS:

The rear sandbag shall be a bag, or combination of bags containing sand only. Zirconium silicate, known as “heavy sand”, is allowed. No other metallic sand will be used by any competitor. A vertical spacer under the rear bag will be allowed as long as it incorporates no adjustments for windage or elevation. The vertical spacer shall not contain any protrusions, which can be inserted into the bench top or the sandbag. The rear sandbag shall not be contained in any manner. The rear sandbag cannot in any way attach to the front rest.
 
Goood inputs, thanks
I believe you could pull a 10lb gun into bags with ~30lbs of force using magnets & imbedded plating front & rear.
But it doesn't sound like it's really a concern. Atleast, beyond IBS
 
Vern,
What you copied and pasted was from the NBRSA 1,000 Benchrest rules, that I have included below. My copy and paste was from the short range rules. As you may notice, they are not the same. I learned something new.

(a) A sandbag is defined as a bag with or without a pedestal,
with a leather or cloth cover, that is capable of being easily
flexed by the fingers, and contains a dry finely divided
nonmetallic substance such as, but not limited to, sand, gravel,
or grain, without additive and packed loosely enough that the
bag can be easily deformed by pressure of the fingers. The
cover of the sandbag must not be bound in such a manner to
prohibit free movement of the contents. Lubricants such as
talcum powder, Vaseline, mica or friction reducing tape of no
more than .011” total thickness may be used on the bag for
lubrication.
 
Wow you are correct I will delet the previous posts.
Sorry about that.
I stand humbly corrected.
 
Now somebody help me out.
Why would that be in the 1k and not all????
Shouldnt we have some kind of uniformity?
 
Vern
If you read the rules posted by Boyd we can't use velcro on our bags like the shortrange guys do either.I know why but can't post it here.
Lynn
 
Lynn if you didnt notice I removed all my other posts.
Im me the reasons for that please I would like to try and understand.
What do you mean velcro on the bags?
I have never heard of that one.
What does it accomplish?
 
Vern,
Because you said that you copied and pasted, and the page was mentioned, I was able to learn something that I had not previously known. This is good. We made light, not heat
 
Yes we did Boyd and I am glad we did.
Still wonder why the diff in the rules but I am sure they have their reasons.
Funny because as I remember I pointed out the same things last year on a different type of post to do with rear rests.
Thanks.
 
Vern
You have a PM.And here is some history for you.

Visalia Sportsman Association
June 16-17, 2001
California State Unlimited Championship, Dale Wimp Rifle Range, Visalia, CA 06/16/01 Unlimited GRAND AGGREGATE

CMP# NAME MATCH MATCH MATCH MATCH MATCH AGG PLACE GRAND PLACE
#1 #2 #3 #4 #5 AGG
101 STUART HARVEY 100 yard 0.296 0.338 0.312 0.371 0.210 0.3054 13
200 yard 1.424 4.276 1.384 2.937 1.019 1.1040 33 0.7047 33
102 LESTER BRUNO 100 yard 0.163 0.192 0.228 0.260 0.227 0.2140 1
200 yard 0.715 0.619 0.509 0.289 0.352 0.2484 1 0.2312 1
103 GARY OCOCK 100 yard 0.266 0.259 0.334 0.427 0.249 0.3070 14
200 yard 0.889 0.779 0.618 0.717 0.566 0.3569 10 0.3320 10
104 LAWRENCE WEISDORN 100 yard 0.430 0.263 0.141 0.312 0.345 0.2982 11
200 yard 0.663 0.667 0.619 0.885 0.641 0.3475 8 0.3229 8
105 DENNIS THORNBURY 100 yard 0.360 0.284 0.260 0.306 0.449 0.3318 15
200 yard 0.750 0.647 0.747 0.598 0.574 0.3316 7 0.3317 9
106 DONALD NIELSON 100 yard 0.222 0.319 0.266 0.277 0.322 0.2812 9
200 yard 0.788 0.851 0.938 0.642 0.725 0.3944 16 0.3378 14
 
Vern,
As to why the differences in rules between 1,000 and 1-200 yd benchrest exist, I think that while efforts are made to minimize the differences in rules between sanctioning bodies for both the long and short range, (so that competitors may more easily use the same equipment to take part in events sanctioned by more than one organization), because long range rifles are generally not suitable for the shorter range events and vice versa, there is not the same need for the rules for long and short range rules to be the same, even within the same organization.
Boyd
 
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Lynn,
So, you contemplate entering one in an unlimited short range event? That their equipment rules correspond, or do not, seems unimportant (just an opinion). As far as I know there has been no call for uniformity or diversity in their rules. Is there a point to this?
Boyd
 
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