Why are 410 shot shells 3inches long and rifled slugs only 2.5 inches long?

It should be stamped on the barrel. If not, please take it to a gunsmith. He should be able to tell you what lenght of shell can be safely fired from the gun.

You must have thought, the photo shooters can help me with this shooter. I think this is a problem for the gun smith.
I do advice you not to put in any other ammunition in your rifle, unless a specialist tells (and shows why) different.
Use guns with trust, but never trust a gun.

Tired of sharing your vegetable garden with slugs and snails? Show them who's boss! Use these chemical fee remedies to cut down on their population.

You don't need pestisides to get rid of snails and slugs.
There are natural ways to get them out of your vegetable garden.
Salt, beer and egg shells will do the trick.
First thing in the morning, take you salt shaker with you to the garden.
Not pleasant to watch, but sprinkling salt on the slugs will kill them.
Slugs and snails aren't able to walk over crushed egg shells.
Scatter the shells around tomato plants and wherever else you notice they have been dining.
The next time you open a bottle of beer, open one for the slimy creatures in your garden.
Poor the beer into jar lids and place a few around your plants, flush with the soil.
They are attracted to beer and will walk right into the trap, drowning before they can escape.
Slugs and snails live under pots and rocks in the garden.
They lay eggs here too.
It is best to not have these or any other decorations available to them.
Another home of theirs are weeds.
Keep the slug and snail population to a minimum by regularly pulling weeds.

A revolver. No slides to deal with to load and it it a no brainier easy way for someone with limited physical ability to use. My 80 year old mother uses a 357 stainless steel model 6 shot revolver. Effectively! Just squeeze the trigger. No safety needed.

A shotgun will shoot anything shorter than the max length specified. The only problem you may have is lightly loaded smaller shells may not cycle your gun. Most 3" magnum semi autos will cycle 2 3/4 inch shells just fine.

I think you might have better luck contacting winchester support or one of the bigger gun stores or even an online gun forum as this isn't quite a spotting scope question ;-]

http://www.winchesterguns.com/customerservice/index.asp

They should be able to tell you if the barrel is available and maybe how much or what dealer has one.

The 1300 was made from 1978 to 2006 so that should narrow down the date at least.

I have given this tip to a dozen people this week. It will save you a ton of ammo. If you don't have a bore sighter of access to one, get a big cardboard box, cut V's in the top that the rifle will sit in nicely, remove the bolt. Find a target, 100 yards away, sight down the bore, tilt box, rifle to target, make sure it doesn't move, adjust scope to the same target. check to see if the rifle is still on, then check the scope again. This will put you on paper at 100 yards.

Is your barrel a smoothbore or rifled? If rifled, you'll get better accuracy with one of the sabot type slugs. Otherwise, shoot what your gun is most accurate with.

Ja, it's 1/4 M.O.A, so at 25 yards/meter it'll be ca 3 inches. You may have gone in the wrong direction. That is, if it was 3' high, and you went another 3 higher then you'd be at the top of the paper. Probably you've got it figured out by now.

The easiest, fastest, cheapest way to zero is with a rifle rest you can clamp your scope into, or alternatively somehow immobilize your rifle some other way. You take a shot, at 25 yards or so. It makes a hole. You now immobilize the rifle, via your rest or heavy sandbags, with the scope pointing exactly where you aimed before. You now, carefully and without moving the rifle/scope off of the point of aim, dial your reticle to point at the actual bullet hole. Your next shot will be at your point of aim now. So you just put it at the right height above your point of aim at 100 yards now.