Underwood 220gr Hardcast (New Load)

mt10mm · December 29 2013 08:35:20 AM MST

I am going to call UW in the morning and give home the heads up. Is he a member here?

Intercooler · December 29 2013 08:42:29 AM MST

Not that I am aware of. Call him with your expansion results and offer up the pictures. Were you running a 22lb or heavier spring setup?

mt10mm · December 29 2013 08:45:19 AM MST

Glock is all factory but the barrel

tommac919 · December 29 2013 09:17:53 AM MST

WOW... curious as to the measurement of the barrel and a pull-down.

For me reloads running max listed only hit 434 , after that expansion on the 5 shells, its the scrap pile.

Intercooler · December 29 2013 09:20:48 AM MST

Wonder what rating the stock spring is? With that load I would run the strongest they offer. If they make a 26lb it would be in there. It would be interesting to see what the results are if you swap to the heaviest and fire a couple.

mt10mm · December 29 2013 09:28:22 AM MST

Do they make different options for the gen4 yet or are people using the adapter and the gen3?

Intercooler · December 29 2013 09:46:24 AM MST

I don't know. I'm shocked more Glock owners aren't looking at the DPM or Sprinco systems for their Glocks.

4949shooter · December 29 2013 09:47:58 AM MST

IC, the stock Glock spring is rated at 17 pounds.

MT, to my knowledge you have to use the Gen 3 adaptor in order to get a heavier spring in your Gen 4. There could be something out there now, but if there is I haven't heard of it.

4949shooter · December 29 2013 09:48:49 AM MST

Quote from: Intercooler on December 29 2013 09:46:24 AM MST
I don't know. I'm shocked more Glock owners aren't looking at the DPM or Sprinco systems for their Glocks.

Somebody here tried a Sprinco in their Gen 4 but it didn't help the issues they were having.

Intercooler · December 29 2013 10:06:49 AM MST

17lbs is crazy light for that load.

mt10mm · December 29 2013 10:19:04 AM MST

Any one not running a stock RSA in their Gen4? In all the reading I have done says factory setup is fine, is this not correct?

4949shooter · December 29 2013 10:21:34 AM MST

I know this doesn't answer your question, but I am running a 22 pound captured RSA in my gen 3 for the hot stuff.

It seems some guys are having problems with the Gen 4 RSA and some are not. But not everyone is running stuff as hot as you are.

tommac919 · December 29 2013 10:24:07 AM MST

Quote from: Intercooler on December 29 2013 10:06:49 AM MST
17lbs is crazy light for that load.

question; would to light a spring allow the action to come back to soon = result in smiles??

mt10mm · December 29 2013 10:29:10 AM MST

Take me to RSA school

Would this effect the ammo or are the smiles and popped primes separate problem

Intercooler · December 29 2013 10:33:34 AM MST

On here I posted some information as it relates to Glock striker fired pistols by the ammo makers Buffalo Bore, SwampFox, etc... They are at a disadvantage from the start versus hammer fired pistols. That's their own findings in testing and my observations would agree. I tried my own test using a hammer fired Match with an 11lb spring and an extreme 155gr and it didn't correlate. In my hammer fired 10's I'm just looking to lessen or eliminate the hard slide to frame hit with the heavier spring and that's all.