44 Mag, some rounds won’t chamber

[Bhoesl]

This is my first time loading a pistol cartridge, always just rifle in the past. I loaded up 24 rounds of 44 magnum.
240gr bullet, 21 - 24gr of H110 (6 rnds each in 1gr increments)
Out of the 24 rounds there were a few that won’t chamber all the way. They’ll only slide about half way into the cylinder. Did I not have the die set right? But the rest all chambered and shot just fine? Here’s a couple photos of one of the rounds that won’t chamber.
Thanks!!

 

[HandgunHunter]

Looks like you are seating and crimping in one step. And trying to crimp way too much.

Front of the case looks enlarged.

 

[El Jason]

Looks like you are seating and crimping in one step. And trying to crimp way too much.

Front of the case looks enlarged.

I was going to point out the excessive crimp as well. Might be slightly bulging the case with the excessive crimp.

 

[Caseknife]

Yep, case is crimped too much and has compressed the case causing it to bulge out. You need one of these, https://www.midwayusa.com/product/1018249683?pid=429532

Read through the instructions with the dies again. Three die set or four die set? Some of the straight wall pistol die sets have a separate carbide crimp die that will smooth out the cartridge on the down stroke.

 

[Bhoesl]

Looks like you are seating and crimping in one step. And trying to crimp way too much.

Front of the case looks enlarged.

Thanks for the reply, you’re right I did seat and crimp at the same time, guess I didn’t realize that wasn’t proper. I just have a seat/crimp die, no separate crimp die. Do I just back the crimp part of the die all the way out, seat all the rounds, then adjust it back down and crimp them?
I’ll try for less of a crimp next time, thank you for pointing that out.

 

[Bhoesl]

Yep, case is crimped too much and has compressed the case causing it to bulge out. You need one of these, https://www.midwayusa.com/product/1018249683?pid=429532

Read through the instructions with the dies again. Three die set or four die set? Some of the straight wall pistol die sets have a separate carbide crimp die that will smooth out the cartridge on the down stroke.

3 die set. I’ll try for less of a crimp next time I guess.

 

[jimh406]

Not all bullets are the same diameter. I see this more commonly with less expensive bullets. Sometimes larger ones won't chamber if you seat them the same as smaller ones.

I'm assuming you are full length resizing.

 

[MTLabrador]

Unfortunately the standard RCBS seat and crimp all in one is really prone to doing this. I should get a Lee factory crimp die, but I’m cheap so I just seat and crimp in two separate steps with the RCBS die.

Get some 240 grain cast SWCs and Unique and you’ll have some seriously fun big bore revolver shooting.

 

[Bhoesl]

Not all bullets are the same diameter. I see this more commonly with less expensive bullets. Sometimes larger ones won't chamber if you seat them the same as smaller ones.

I'm assuming you are full length resizing.

Yes, full-length resized all the cases. All were loaded with the same bullets. Only a few wouldn’t chamber even though everything was done exactly the same with each round, to the best of my limited knowledge.

 

[Dan O]

Some of your cases may be a little over length. Might be a good time to get your case trimmer out and make them all the same length. That way the crimp will be consistent for all your cases.