I recently purchased some 6mm Remington 100 grn core locts for the 243 win.

My Little one loves shooting the 243 and is pretty good from the bench. But he shoots up all my ammo.

I was using Hornady 100 grn before and they worked well about .5 moa @ 100 yds

If I seat the Remington bullets at the cannalure the COAL is too long.

Can I seat the cannalure further into the case mouth to get desired COAL and is it safe and will it effect accuracy?

Thank in advance

It will be perfectly safe to ignore the cannelure when seating the bullets in the case.

Just seat them to the correct length for your rifle. Be aware though, that if this means seating them deeper than you did the Hornady bullets that it might raise pressures since you have effectively reduced your case capacity.

I ignore the cannelure on a bunch of "seconds" that I bought from Nosler all the time. They are 160 Partitions that were made for loading in factory ammo but did not get used. I seat them with the cannelure way out of the case, they shoot well.

I'm in total agreement with R Flowers, just ignore the cannelure.

I would ignore the COAL.Why do you think the company put the cannelures were they did on the bullet. This coal thing is getting way out of hand,and is really only set up for real serious benchrest shooters and sometimes doesn,t even work for them. van

forget the COAL...it's not worth the time of day!!!

Forget the Cannelure unless you want to crimp.

load the ammo to work in your gun...

quote:

Can I seat the cannalure further into the case mouth to get desired COAL and is it safe and will it effect accuracy?

It's safe!!!

Will it affect accuracy.....yes...it might improve it!

For a hunting rifle it will most likely have no functional effect at all!

I just gotr back from the range and figured I would give you all a report.

The Remington core locts are no where near as accurate as the Hornady's in 100 grn.

The Hornady groups of 5 shots were all under an inch @ 100 yds and the Remington's with the canalure seated below the case mouth were about 2 inches.

My Chrony is giving me about the same muzzle velocity for both bullets.

I'm going back to the Hornady's because I was very happy with the groups.

Thanks again to all.

quote:

Originally posted by van:
I would ignore the COAL.Why do you think the company put the cannelures were they did on the bullet. This coal thing is getting way out of hand,and is really only set up for real serious benchrest shooters and sometimes doesn,t even work for them. van

Cannelures are only needed for crimping. They are often put in a particular location to allow the bullets to fit in the shortest magazines. I have never paid any attention to them unless I want to crimp.

If you want to crimp, use a Lee Factory Crimp Die and you won't need a cannelure. It crimps the case mouth right into the jacket, making its own cannelure.

quote:

Originally posted by PETEM:
I just gotr back from the range and figured I would give you all a report.

The Remington core locts are no where near as accurate as the Hornady's in 100 grn.

The Hornady groups of 5 shots were all under an inch @ 100 yds and the Remington's with the canalure seated below the case mouth were about 2 inches.

My Chrony is giving me about the same muzzle velocity for both bullets.

I'm going back to the Hornady's because I was very happy with the groups.

Thanks again to all.

Just because your using the same weight of bullet, dosn't mean that everything else will remain the same. Your going to need to work up a reasonably accurate load with the new bullet too.
Might mean a change in seating depth, might mean a different powder charge, and might even mean you need to use a different powder than you were using with the Hornady's.

quote:

Just because your using the same weight of bullet, dosn't mean that everything else will remain the same. Your going to need to work up a reasonably accurate load with the new bullet too.

Tailgunner I understand totally understand that, but I do not want to reinvent the wheel.

The Hornady's are sub moa loads some groups well under .5 moa from the bench.

This being said, I do not want to spend lots of time developing a new load for a diffrent bullet. I'll just use the bullet that works with the already very accurate load I worked up.

I do understand that half the fun is working up diffrent loads for diffrent bullets and diffrent weights, but I just don't have the time, I wish I did.

My little guy is very impatient and when we go to the range beleive it or not he wants to shoot small groups. You gotta see the smile on his face when he sees a few bullets touching, the smile is worh scrapping the $10.00 bag of corelocts and going with the Hornady's.

Thanks again for the input.

quote:

Can I seat the cannalure further into the case mouth???

Thank in advance

As Moe would say, why, coitinley!!

Ignore the cannelure, and seat the bullet to the requied depth!

quote:

Originally posted by fredj338:

quote:

Originally posted by van:
I would ignore the COAL.Why do you think the company put the cannelures were they did on the bullet. This coal thing is getting way out of hand,and is really only set up for real serious benchrest shooters and sometimes doesn,t even work for them. van

Cannelures are only needed for I thought we all knew thatcrimping. They are often put in a particular location to allow the bullets to fit in the shortest magazines. I have never paid any attention to them unless I want to crimp.

I thought we all knew that?! Thanks for pointing it out to others whom might not have. van