Added red dot scope to Benelli MP-95E and now it stove pipes

[haraoi...@yahoo.com]

My Uncle has added a red dot scope to his Benelli MP-95E and now it
stove pipes. Apparently the scope mounts to the frame. He has heard of
other people having the same problem. He has tried a variety of
different ammunition. Varying the grip does not seem to change things
either.

Has anyone heard or encountered this?

Thanks,
harry

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[prig...@aol.com]

haraoi_co wrote:

# My Uncle has added a red dot scope to his Benelli MP-95E and now it
# stove pipes.

That suggests that the scope is mounted too low over the bolt and
magazine, interfering with the ejection of the brass.

Can the extractor or ejector be adjusted at all? If not, find
different scope mounts.

Doug Chandler

[Gerald "Brick" Brickwood]

<haraoi...@yahoo.com> wrote in message
news:guimkr$62v$1...@news.albasani.net...
> ...

If I remember the configuartion of the MP-95 there was a spot between the
bolt and front sight where a single weaver ring could be attached for a red
dot. Using that spot and a good steel ring was the typical method of
mounting (I am going by memory of that pistol from 10 plus years ago!) But
if that is not satisfactory here a cool mounting system available from
Larry's Guns (the Benelli importer) in Maine:
http://www.larrysguns.com/Products/The-Ultimate-Benelli-Mount-MP-90-(shown)__The-spc-Ultimate-spc-Benelli-spc-Mount.aspx
It looks like a sleeve that fits over the barrel and clamps from the bottom.
Made to fit both the MP 90 and MP 95.

[Doug White]

haraoi...@yahoo.com wrote in news:guimkr$62v$1...@news.albasani.net:

# My Uncle has added a red dot scope to his Benelli MP-95E and now it
# stove pipes. Apparently the scope mounts to the frame. He has heard of
# other people having the same problem. He has tried a variety of
# different ammunition. Varying the grip does not seem to change things
# either.
#
# Has anyone heard or encountered this?

As was mentioned by another poster, the mounting system for a scope with
any length would typically have the scope straddling the top of the opening
in the frame, right over the slide. The extractor is mounted at a 45
degree angle, and the "ejector" is a tab on the magazine. It's going to
try to throw the brass up and to the side. The "UP" part is the problem,
especially if the scope is wide, or low. He might be able to attach an
angled baffle to the red dot to bounce the brass more to the side.

I have a red dot on my MP90S, but it's a Tasco Optima, which is one of the
really small red dot sights. It sits entirely behind the opening in the
frame, and is no where near the ejection process.

Doug White

[haraoi...@yahoo.com]

On May 15, 5:58�pm, "Gerald \"Brick\" Brickwood"
<bric...@frontiernet.net> wrote:
�But
# if that is not satisfactory here a cool mounting system available from
# Larry's Guns (the Benelli importer) in Maine:http://www.larrysguns.com/Products/The-Ultimate-Benelli-Mount-MP-90-(...
# It looks like a sleeve that fits over the barrel and clamps from the bottom.
# Made to fit both the MP 90 and MP 95.
#

That is the mount that my Uncle has. We shot it today. I was not able
to get it to stove pipe. Shooting single handed, it seems like it
would cycle the slide just enough to scoop up the next round, but not
far enough to engage the sear. I think it was letting the hammer
follow the slide and rest firing pin on the case rim. If I squeezed
hard enough to induce a tremor, it seemed to behave better. Shooting
with both hands it functioned correctly. Apparently something about
adding the mass of the mount and scope seems to have changed the
dynamics of the reloading cycle.

Thanks guys,
harry

[Jim]

<haraoi...@yahoo.com> wrote in message
news:gul3ac$e5p$1...@news.albasani.net...
# Shooting single handed, it seems like it
# would cycle the slide just enough to scoop up the next round, but not
# far enough to engage the sear. I think it was letting the hammer
# follow the slide and rest firing pin on the case rim. If I squeezed
# hard enough to induce a tremor, it seemed to behave better. Shooting
# with both hands it functioned correctly. Apparently something about
# adding the mass of the mount and scope seems to have changed the
# dynamics of the reloading cycle.

Shooting a semi single-handedly changes the dynamics of the kinetic energy
of the bolt. The movement of mass is dampened by having to also move the
weight of the firearm.

Limp-wristing a semi-auto pistol results in the same effect.

[sta...@prolynx.com]

This sort of thing can be tough to diagnose. From a short search of
some sites, it appears as though that model is kind of fussy about
what it will shoot reliably, it might have been right on the edge
before. A change of ammo might benefit you. Another factor might be
the manner in which the scope mount clamps on, it might be distorting
something just enough to affect functioning, particularly if the
original manufacturer didn't design it. Only answer there is "don't
do that". I had a pistol mount with that problem myself. Looked fine
until the mounting screws were torqued down and distorted the frame.
Scrapped that mount.

I'm not real fond of designs that use part of the magazine for an
ejector, that should really be fixed to the gun. But that's what
you've got to live with. Really hard to alter the ejection pattern
without messing up feeding and any wear on magazine or catch affects
both feeding and ejection. Hope there's plenty of spares.

Stan