Roll Sizer

[Sniffer]

Is anyone selling rollsizers in Canada or is this an import-from-USA item?

From memory I bought mine as part of a Black Friday sale from Double Alpha.

 

[Sniffer]

X-Reload and CRAFM used to bring them in, but didn't have stock, so I ended up buying it from the US distributor. There's a FB group for Rollsizer, lots of good discussion and tips. Kevin Whitehead who runs the Rollsizer company often contributes to the discussions and adds his expertise.

Good customer service from Kevin. I reached out to his with a question or two and he got back to me with answers promptly.

 

[Sniffer]

I just spent all day resizing buckets of previously roll sized 9mm and it is pretty noticeable for me.

YMMV.

I got lots of practice yesterday.....

 

[Sniffer]

I saw an extreme example of what happens to a case when it fires slightly out of battery and it was clear there was no way a die could get that back to the size it should be (it had a bulge all the way around just above the base). I think I still have it.

Most cases are nothing like the one I am referring to but if there is even a slight bulge.......

Yup I do still have it - found it today.

This thing must have been getting close to becoming a pipe bomb. I didn't recall the primer being half out

 

[Gatehouse]

That won't work very well.

 

[VanMan]

Annealing will only help the top of the case (only the first third or so is annealed on my AMP) so it won't help any issues with the base.

I anneal every firing as I feel it helps with brass life and makes reload to reload more consistent.

Before I stared annealing I had a batch of 6.5CM brass that got so work hardened that a bullet would still easily slip into the case even after it was resized (sizeable brass spring back).

for his specific issue, as a test, he could anneal the full case. Put the case upside down on a nail, hit it with a plumbers torch over the entire case.

I'd like to see if he's been case gauging his resized brass before he tries full case annealing though.

 

[VanMan]

I got lots of practice yesterday.....

View attachment 1082964

I gave mine a workout last week too . Our shop manager wanted to try running some roll sized 9mm through our 1050’s as a test so I ran a couple buckets through my rollsizer. Some of the handguns in our lineup have pretty tight chambers. If this helps, then we may invest in a commercial roll sizer for our shop.

 

[JIMMY 808]

Using Lapoo 300 prc brass split my FL sizer die.

 

[Sniffer]

Using Lapoo 300 prc brass split my FL sizer die.

Brass split a steel die?

It must have been defective?

 

[JIMMY 808]

Brass split a steel die?

It must have been defective?

Could be but I don’t think I am the only one who has split a die lately.

Lapoo batches of brass have very thick base making it about impossible to resize the base.

 

[pmatuk]

yes a steel die can split if you over do it

 

[mudpro]

Brass split a steel die?

It must have been defective?

It's actually pretty common on 7/8" sizing dies with cases that have bases the size of wsm/prc and 338 lapua. The dies get thin on the base on those cases and when you try to size down the .200 line .004" it takes alot of force. I run a 1-1/4" sizing die with my 300norma they work so much better for big cartridges.

 

[Sniffer]

Damn, I wouldn't have figured that was a thing.

Biggest I have played with is 6.5CM.

 

[VanMan]

I rollsize.

Easy to do and very worth it in my opinion.

I actually find that after a lap in the roll sizer the sizing die takes almost zero effort.

I have a good jump on my reloading for the 2026 season, so I thought I'd do some testing. I posted the results in the rollsizer FB group here https://www.facebook.com/groups/1266393717791415/permalink/1526200671810717

Surprisingly it took slightly more effort to resize/decap rollsized brass (10.2 kg) vs non-rollsized brass (8.4kg). I'm wondering it's caused by the brass being work-hardened when it's rollsized.

The brass is once fired Speer fired through a Glock G17 gen 5, I used a digital luggage scale attached to the lever of my 1050. I'm using a standard Lee resize/decap die.

I'm still going to rollsize all my pistol brass. The benefits outweigh the increase in lever effort.

 

[marky_mark]

I just ordered one of these with the expectation that it will cure the issue that some rifle cartridges have. My biggest ssue is specifically with 300 norma expansion at the 0.200 line. Factory new brass from all manufacturers are undersized and all but the best dies struggle to keep it in check. Ive cracked a couple dies trying to resize brass that has been fired a couple times. If it does what I think, it should extend the life of my brass, allow me to extract rounds without issue, and be able to get the performance I want out of this case. My 300 nmi has no issue, but the std norma makes my head hurt

 

[boxhitch]

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